Skocz do pozycji: 1.

Tytuł:

The internal geometry and lithofacies pattern of the Upper Cretaceous-Danian sequence in the Polish Lowlands

Autorzy:

Leszczyński, K.

Powiązania:

https://bibliotekanauki.pl/articles/2058992.pdf

Data publikacji:

2012

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Upper Cretaceous-Danian sequence
Polish Lowlands
structural and thickness maps
lithofacies pattern

Opis:

The paper presents a set of maps illustrating the internal geometry of the Upper Cretaceous-Danian sedimentary sequence in the Polish Lowlands. Qualitative lithofacies are used for reconstructions with the dominant lithofacies component and accessory components indicated. The following maps are produced: (1) base Upper Cretaceous structural map; (2) Upper Cretaceous (including Danian) thickness map; (3) thickness map of succession K3 (Cenomanian–lower Turonian, excluding the upper Albian cycle K3-I, which is the lowermost cycle of succession K3, but formally belongs to the Lower Cretaceous); (4) succession K4 (upper Turonian–Danian) thickness map. The maps of successions K3 and K4 illustrate the post-inversion geometry of the basin for the pre-inversion (Cenomanian–lower Turonian) and syn-inversion (upper Turonian–Danian) successions. Thickness analysis shows an increasing difference in subsidence rate during the Late Cretaceous between the areas extending on the two sides of the present-day Mid-Polish Swell. Much higher subsidence rates during deposition of succession K4 occurred in the area extending to the SW of the swell. The maximum subsidence zone migrated with time from the Pomeranian and Kujavian segments towards the Kujavian and Lublin segments. The lithofacies pattern is presented in seven maps constructed for individual eustatically and tectonically controlled cycles: K3-II–K3-III (early Cenomanian–early late Cenomanian), K3-IV (latest Cenomanian–early Turonian), K4-I (late Turonian–Coniacian), K4-II (Santonian–earliest Campanian), K4-III (late early Campanian–earliest Maastrichtian), K4-IV–K4-V (late early Maastrichtian–late Maastrichtian) and Pc-I (Danian–?earliest Selandian).

Źródło:

Geological Quarterly; 2012, 56, 2; 363-386
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:

The Silurian of southwestern margin of the East European Platform (Ukraine, Moldova and Romania) : lithofacies and palaeoenvironments

Autorzy:

Radkovets, N.

Powiązania:

https://bibliotekanauki.pl/articles/2059822.pdf

Data publikacji:

2015

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

East European Platform
Silurian
lithofacies
reef
shelf of Baltica
palaeoenvironments

Opis:

Silurian strata, stretching along the western margin of the East European Platform from the Baltic to the Black Sea, represent a potential target for both conventional and unconventional hydrocarbon exploration. Distribution of the black shale facies, prospective for shale gas, and the reef facies, prospective for oil, has been studied in respect of palaeoenvironments. The Silurian sequence has been investigated in the territory of Ukraine (Volyn-Podillyan Plate, Dobrogean Foredeep) and correlated with the data on Moldova and Romania (Moldovian Platform). The occurrence of Silurian strata, their thickness, and petrographic and lithological characteristics allowed reconstructing the distribution of open-shelf, reef and lagoonal facies. The reef facies migrated during the Wenlock–Middle Pridoli, shifting towards the open sea and back towards the shore, and therefore has been termed a migrating reef facies. Correspondingly, the boundary between the open-shelf and reef facies was shifting. The facies distribution was controlled by the transgressive-regressive cycles, which caused the fluctuations of the shelf water depth in different time intervals of the Silurian. The shelf water depth of about 100 m, where the top of the oxygen-minimum layer impinged on the sea bottom, was the boundary between the open-shelf facies, represented by organic-rich sediments, and the reef buildups.

Źródło:

Geological Quarterly; 2015, 59, 1; 105--118
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:

Rozwój litofacjalny późnej kredy Niżu Polskiego
Lithofacies evolution of the Late Cretaceous Basin in the Polish Lowlands

Autorzy:

Leszczyński, K.

Powiązania:

https://bibliotekanauki.pl/articles/2062985.pdf

Data publikacji:

2010

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

litofacje
paleotektonika
kreda górna
Niż Polski
lithofacies
palaeotectonic setting
Upper Cretaceous
Polish Lowlands

Opis:

Praca jest podsumowaniem wieloletnich badań autora prowadzonych nad stratygrafią, litologią i paleogeografią kredy górnej Niżu Polskiego. W wyniku syntezy danych z 1018 otworów wiertniczych skonstruowano 6 map litofacjalno-paleogeograficznych, odpowiadających wydzielonym dla basenu późnej kredy na obszarze Niżu Polskiego cyklom transgresywno-regresywnym: K3-II–K3-III (wczesny cenoman–starszy późny cenoman), K3-IV (najmłodszy cenoman–środkowy turon), K4-I (późny turon–koniak), K4-II (santon–najstarszy kampan), K4-III (młodszy wczesny kampan–najstarszy mastrycht) i K4-IV–K4-V (młodszy wczesny mastrycht–późny mastrycht). Na mapach zastosowano jakościowe rekonstrukcje litofacjalne, ze wskazaniem na dominujący składnik litologiczny oraz składniki litologiczne towarzyszące. Wydzielono dziewięć kategorii litofacjalnych, odpowiadających określonym środowiskom i systemom depozycyjnym. Są to litofacje: kredy piszącej, węglanowa (wapienna), węglanowo-krzemionkowa, marglista, ilasto-marglista, mułowcowo-marglista, mułowcowo-piaszczysto-marglista, węglanowo piaszczysta i piaszczysta. W ramach prac nad prezentowaną w artykule wersją map, autor dokonał też kompleksowej analizy materiałów z wierceń Niżu Polskiego, uwzględniając przede wszystkim profilowania geofizyki wiertniczej. Niektóre profile wierceń zostały zweryfikowane i ponownie zinterpretowane. W szczególności, akcent położono na analizę poziomów twardych den, przerw sedymentacyjnych i wszelkich przejawów cykliczności sedymentacji. Umożliwiło to, w kilku przypadkach, logiczne korelacje odpowiadających sobie kompleksów litologicznych, które wcześniej stwarzały problemy interpretacyjne i były niewłaściwie skorelowane. Scharakteryzowano ogólne następstwo litofacji w basenie, zaprezentowano uwagi o subsydencji i batymetrii basenu oraz przedyskutowano pokrótce problem inwersji tektonicznej bruzdy śródpolskiej. Przedstawiona także została historia rozwoju litofacjalnego basenu późnej kredy.
The report is a general overview of the author’s many-year studies on the Late Cretaceous stratigraphy, lithology and paleogeography of the Polish Lowlands. Six lithofacies maps are presented for individual transgressive-regressive cycles in the Late Cretaceous of the Polish Basin: K3-II–K3-III (Early–early Late Cenomanian), K3-IV (latest Cenomanian–Middle Turonian), K4-I (Late Turonian–Coniacian), K4-II (Santonian–earliest Campanian), K4-III (late Early Campanian–earliest Maastrichtian), K4-IV–K4-V (late Early–Late Maastrichtian). The maps were constructed using qualitative lithofacies reconstructions with the dominant lithofacies component and accessory components indicated. Nine lithofacies types, corresponding to specific sedimentary environments and depositional systems, have been identified within the Upper Cretaceous succession of the Polish Lowlands: chalk, carbonate, carbonate-siliceous, marl, claystone-marl, mudstone (siltstone)-marl, mudstone-sandstone-marl, sandy-carbonate and sandstone lithofacies. The present version of the maps is based on an integrated analysis of drilling materials, mainly wireline logs. Lithology and stratigraphy in some boreholes were verified and reinterpreted by the author. In particular, special emphasis was laid on analysing hardgrounds, sedimentary breaks and any signs of sedimentary cyclicity. It enabled logical correlations between corresponding lithological complexes, which were previously incorrectly correlated. General succession of lithofacies in the basin is characterised, remarks on its subsidence and bathymetry are presented and a brief discussion of the problem of Late Cretaceous tectonic inversion of the Mid-Polish Trough is given. The report also presents the history of lithofacies evolution in the Late Cretaceous basin.

Źródło:

Biuletyn Państwowego Instytutu Geologicznego; 2010, 443; 33--53
0867-6143

Pojawia się w:

Biuletyn Państwowego Instytutu Geologicznego

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:

Lithofacies and palaeoenvironmental interpretation of the Early Jurassic Höör Sandstone, Southern Sweden

Autorzy:

Pieńkowski, G.

Powiązania:

https://bibliotekanauki.pl/articles/2059898.pdf

Data publikacji:

2002

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Höör Sandstone (Fm)
Early Liassic
Stanstorp Member
Vittseröd Member
sedimentology
fluvial lithofacies
storm- and tide-dominated facies
formal lithostratigraphy

Opis:

Sedimentological analysis of the Early Jurassic Höör Sandstone in Central Scania, Sweden shows that two units representing different lithofacies may be distinguished. The lower Stanstorp Member is characterised by texturally and mineralogically heterogeneous sediments. Mature arenites and immature quartz and subarkosic wackes form two clearly separated groups, interpreted as fluvial channel and alluvial plain deposits respectively. The fluvial character of this member is supported by a dominance of unidirectionally oriented trough sets, abundant plant detritus, the presence of plant roots and palaeosols and a lack of marine body fossils and trace fossils. An intercalated composite polymict conglomerate layer is interpreted as the result of an extraordinary flood. The overlying Vittseröd Member is characterised by mature quartz arenites and large-scale tabular sets with multidirectional orientations. The Vittseröd Member arenites are of storm- and possibly tide-dominated shoreface origin. Bidirectional wave and tide-induced longshore currents and unidirectional onshore migration of sand ridges were the chief depositional processes. Longshore currents towards the NNW prevailed. Upper flow regime features, and erosion and reworking of sediments are attributed to the storm-induced rip currents. Lithofacies characteristics are used to define the following lithostratigraphical units: the Stanstorp and the Vittseröd members, as well as the Höör Sandstone (Fm) above. Lithofacies and palaeoenvironmental characteristics of the Vittseröd Member and their comparison with the facies of the Helsingborg and Döshult members in Western Scania suggest a Sinemurian age for the Vittseröd Member.

Źródło:

Geological Quarterly; 2002, 46, 3; 307-320
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:

Lithofacies and depositional environments of the Paleogene/Neogene sediments in the Hoanh Bo Basin (Quang Ninh province, NE Vietnam)

Autorzy:

Hoang, V. T.
Wysocka, A.
Phan, D. P.
Nguyen, Q. C.
Ziółkowski, P.

Powiązania:

https://bibliotekanauki.pl/articles/184794.pdf

Data publikacji:

2015

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

terrestrial environments
lithofacies
Paleogene
Neogene
Vietnam

Opis:

The Hoanh Bo Basin is a multiple period formed basin which is associated with the tectonic mechanism due to the activity of the Chi Linh-Hon Gai and Trung Luong Faults during the late Paleogene – early Neogene time. The basin is filled with continental sediments, comprising mainly polymictic conglomerates, sandstones, siltstones, claystones and shales. Coarser-grained polymictic deposits predominate along the northern and western margins of the basin, while different types of siltstones, claystones, even sandstones occur in its center, as well as along its southern and eastern parts toward the Ha Long Bay. The source rocks for sedimentary materials are mainly originated from rocks of the Hon Gai and Ha Coi Formations. Based on the dominant grain-size class, texture, stratification, degree of clast rounding and sorting, 17 lithofacies were determined in the Hoanh Bo Basin infill. The basin is filled by gravelly, sandy and fine-grained lithofacies just covers a modest area but it represents a full of succession of 4 depositional systems including alluvial fan, fluvial, deltaic and lacustrine environments. Alluvial fan and fluvial environments are characterized by an assemblage of lithofacies such as sand- and mud-supported disorganized breccias (Gb), clast- to sand-supported conglomerates (Gmm), clast-supported inverse-graded conglomerates (Gig), planar-cross-bedded conglomerates (Gp), trough cross-bedded conglomerates (Gt), horizontally stratified conglomerates (Gh), planar cross-bedded sandstones (Sp), trough cross-bedded sandstones (St), ripple cross-laminated sandstones (Sr), horizontally bedded sandstones (Sh), massive sandstones (Sm), massive mudstones, siltstones (Fsm), laminated siltstones and mudstones (Fl), massive claystones (Fm) and coaly lithofacies (C); the deltaic assemblage is dominated by planar-cross-bedded conglomerates (Gp), horizontally stratified conglomerates (Gh), planar cross-bedded sandstones (Sp), horizontally bedded sandstones (Sh), low-angle cross-bedded sandstones (Sl); while the lacustrine assemblage consists of ripple cross-laminated sandstones (Sr), horizontally bedded sandstones (Sh), normally graded sandstones (Sng), massive mudstones, siltstones (Fsm), laminated siltstones and mudstones (Fl), massive claystones (Fm) and coaly lithofacies (C).

Źródło:

Geology, Geophysics and Environment; 2015, 41, 4; 353-369
2299-8004
2353-0790

Pojawia się w:

Geology, Geophysics and Environment

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:

Analysis of lithofacies cyclicity in the Miocene Coal Complex of the Bełchatów lignite deposit, south-central Poland

Autorzy:

Mastej, W.
Bartuś, T.
Rydlewski, J.

Powiązania:

https://bibliotekanauki.pl/articles/94646.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

Markov chain
method
cyclic sedimentation
vertical succession of lithofacies
łańcuchy Markowa
metoda
cykliczna sedymentacja
litofacja

Opis:

Markov chain analysis was applied to studies of cyclic sedimentation in the Coal Complex of the Bełchatów mining field (part of the Bełchatów lignite deposit). The majority of ambiguous results of statistical testing that were caused by weak, statistically undetectable advantage of either cyclicity over environmental barriers or vice versa, could be explained if only the above-mentioned advantages appeared in the neighbourhood. Therefore, in order to enhance the credibility of statistical tests, a new approach is proposed here in that matrices of observed transition numbers from different boreholes should be added to increase statistical reliability if they originated in a homogeneous area. A second new approach, which consists of revealing statistically undetectable cyclicity of lithofacies alternations, is proposed as well. All data were derived from the mining data base in which differentiation between lithology and sedimentary environments was rather weak. For this reason, the methodological proposals are much more important than details of the sedimentation model in the present paper. Nevertheless, they did reveal some interesting phenomena which may prove important in the reconstruction of peat/lignite environmental conditions. First of all, the presence of cyclicity in the sedimentation model, i.e., cyclic alternation of channel and overbank deposits, represents a fluvial environment. It was also confirmed that the lacustrine subenvironment was cut off from a supply of clastic material by various types of mire barriers. Additionally, our analysis revealed new facts: (i) these barriers also existed between lakes in which either carbonate or clay sedimentation predominated; (ii) there was no barrier between rivers and lakes in which clay sedimentation predominated; (iii) barriers were less efficient in alluvial fan areas but were perfectly tight in regions of phytogenic or carbonate sedimentation; (iv) groundwater, rather than surface flow, was the main source of CaCO3 in lakes in which carbonate sedimentation predominated; (v) a lack of cyclic alternation between abandoned channels and pools with clayey sedimentation; (vi) strong evidence for autocyclic alternation of phytogenic subenvironments and lakes in which carbonate sedimentation predominated was found in almost all areas studied.

Źródło:

Geologos; 2015, 21, 4; 285-302
1426-8981
2080-6574

Pojawia się w:

Geologos

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:

An application of Markov chain analysis to studies on lithofacies sequences in the alluvial fans from the "Bełchatów" lignite deposit (Poland
Zastosowanie analizy łańcuchów Markowa do badań sekwencji litofacji w stożkach napływowych w złożu węgla brunatnego "Bełchatów"

Autorzy:

Mastej, W.

Powiązania:

https://bibliotekanauki.pl/articles/191575.pdf

Data publikacji:

2002

Wydawca:

Polskie Towarzystwo Geologiczne

Tematy:

Markov chain analysis
vertical lithofacies succession
Bełchatów lignite deposit
alluvial fans
lacustrine limestones

Opis:

The Markov chain analysis was used to study on lithofacies sequences in alluvial fans enclosed in the main seam of the "Bełchatów" lignite deposit. Quantitative approach supported the qualitative results of sedimentological analysis - the origin of muds, clays and coaly clays as well as the presence of a barrier (peat bog) between the fans and the lake with carbonate deposition. It was found that ephemeral lakes located on the fan surface were favourable sites for development of peat bogs. Similarly, the same lakes evolving into the peat bogs were favourable environments for expansion of sand lobes of the fans. It was discovered that cyclicity in sediment succession was disturbed by erosion. The new model of lacustrine limestone deposition was proposed for the northwestern part of lake which borders the fans from the northwest.

Źródło:

Annales Societatis Geologorum Poloniae; 2002, 72, No 3; 271-282
0208-9068

Pojawia się w:

Annales Societatis Geologorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:

Litofacje formacji perspektywicznych dla gazu i ropy w łupkach w utworach ordowiku i syluru na obszarze bałtyckim i podlasko-lubelskim
Lithofacies of the Ordovician and Silurian formations prospective for shale gas/oilin the Baltic and Podlasie-Lublin areas

Autorzy:

Feldman-Olszewska, A.
Roszkowska-Remin, J.

Powiązania:

https://bibliotekanauki.pl/articles/2075505.pdf

Data publikacji:

2016

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

litofacje
ordowik
silurian
łupki
lithofacies
Ordovician
Silurian
shales

Opis:

The paper presents a sedimentological analysis of Ordovician (Sandbian–Hirnantian = Caradoc–Ashgill) and Silurian (Landovery–Wenlock, lower Ludlow) claystones and mudstones from the north-eastern (Baltic Basin) and south-eastern (Podlasie-Lublin Basin) parts of the East European Craton. In both basins, formations prospective for shale gas/oil were analyzed: the Sasino Fm., Pasłęk Fm. (including the Jantar Mb.), Pelplin Fm., Udal Fm., Wrotnów Fm. and Terespol Fm. Based on lithological and sedimentological criteria, 34 lithofacies and 11 lithofacies associations have been distinguished. The most promising lithofacies arerepresentedbytheL-1,L-3andL-4associationswhicharecharacterizedbydarkgreycolour, a very low degree or lack of bioturbation, rare sedimentary structures, and common content of small pyrite concretions. They dominate in the Sasino Fm., Pas³êk Fm. (in the Jantar Mb. only) and Pelplin Fm., but are much less common in the Udal Fm., Terespol Fm. and Pas³êk Fm. (excluding the Jantar Mb.).

Źródło:

Przegląd Geologiczny; 2016, 64, 12; 968--975
0033-2151

Pojawia się w:

Przegląd Geologiczny

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:

Lithofacies analysis of CMP at northern prospect of the Petrikov potash deposit (Belarus)
Analiza litofacjalna warstw ilasto-marglistych północnej części złoża soli potasowych Petrikow (Białoruś)

Autorzy:

Barbikau, D.
Klabuk, A.
Kurlovich, D.
Kutyrlo, V.
Sauchyk, S.

Powiązania:

https://bibliotekanauki.pl/articles/2192094.pdf

Data publikacji:

2017

Wydawca:

Polskie Stowarzyszenie Górnictwa Solnego

Tematy:

lithofacies analysis
Petrikov potash deposit
waterproof thickness
lithostratigraphy
ArcGIS
analiza litofacjalna
Pietrykowskie złoże soli potasowej
warstwa nieprzepuszczalna

Opis:

The results of lithofacies analysis of clay-marl package (CMP) at Northern Prospect of Petrikov potash deposit are discussed. The analysis has been undertaken to increment waterproof thickness. Lithofacies subdivision has been carried out with ArcGIS 10 software. The following three lithofacies have been defined: sulfate-carbonate-clay, sulfate-clay-carbonate, and clastic-carbonate-clay. An inclusion of gypsum-bearing sub-package of the CMP into the waterproof thickness, based on the lateral lithofacies variation of rocks, will allow pillar mining at the areas, where the mining is prohibited at present by local regulatory documents.
W pracy omówiono wyniki analizy litofacjalnej warstwy ilastomarglistej (WIM) północnej części Pietrykowskiego złoża soli potasowej na Białorusi przeprowadzonej w celu rozpoznania warstw nieprzepuszczalnych. Rejonizację litofacjalną wykonano za pomocą programu ArcGIS 10. Wyróżniono trzy litofacje: siarczanowo-węglanowo-ilastą, siarczanowo-ilasto- -węglanową oraz klastyczno-węglanowo-ilastą. Włączenie do warstwy nieprzepuszczalnej subwarstwy gipsowej WIM, które oparto na lateralnej zmienności litolofacjalnej skał, w przyszłości pozwoli na eksploatację złoża systemem filarowym. Obecnie eksploatacja złoża jest zabroniona.

Źródło:

Przegląd Solny; 2017, 13; 150--155
2300-9349

Pojawia się w:

Przegląd Solny

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:

Textural characteristics, mode of transportation and depositional environment of the Stormberg Group in the Eastern Cape, South Africa: evidence from grain size and lithofacies analyses

Autorzy:

Chima, Priscilla
Baiyegunhi, Christopher

Powiązania:

https://bibliotekanauki.pl/articles/2204351.pdf

Data publikacji:

2022

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

grain size distribution
textural parameters
lithofacies classification
hydrodynamic energy conditions
Triassic
Jurassic
rozkład wielkości ziarna
parametry teksturalne
klasyfikacja litofacji
warunki hydrodynamiczne
warunki energetyczne
trias
jura

Opis:

The Stormberg Group comprises the Molteno, Elliot and Clarens formations and is one of four stratigraphical groups that make up the Karoo Supergroup in South Africa. The group is the highest unit in the Karoo Basin, representing the final phase of preserved sedimentation. The major problem with the Stromberg Group is that the mode of transport, hydrodynamic energy conditions and depositional environment are still poorly understood. For the present paper, grain size and lithofacies studies on selected sandstones from the Molteno, Elliot and Clarens formations were performed so as to elucidate their textural characteristics, depositional processes, sedimentation mechanisms and hydrodynamic energy conditions and to discriminate different depositional environments. The statistical parameters of grain size distribution (mean grain size, standard deviation, skewness and kurtosis) show that the sandstones are predominantly unimodal, fine grained, moderately well sorted, mesokurtic and near symmetrical. The bivariate diagrams of the aforementioned statistical parameters demonstrate that river and aeolian dune had the greatest impact on the depositional environments. Likewise, the C-M pattern (Passega diagram) shows that the sandstones were mostly deposited through tractive current process. Furthermore, the C-M diagram reveals the prevalence of rolling, suspension and graded suspension modes of sediment transportation. Seventeen sedimentary lithofacies were identified and grouped into seven lithofacies associations. These lithofacies associations indicate braided channel, overbank and swamp deposits for the Molteno Formation, alluvial fan/floodplain and playa deposits for the Elliot Formation and aeolian deposits for the Clarens Formation.

Źródło:

Geologos; 2022, 28, 1; 61--78
1426-8981
2080-6574

Pojawia się w:

Geologos

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:

Pleistocene deposits in the Southern Egyptian Sahara: lithostratigraphic relationships of sedimentsand landscape dynamics at Bir Tarfawi

Autorzy:

Hill, Christopher L.
Schild, Romuald

Powiązania:

https://bibliotekanauki.pl/articles/2026009.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

sediments
lithofacies
stratigraphy
groundwater
Pleistocene

Opis:

The sedimentological and lithostratigraphic record from north-central Bir Tarfawi documents the presence of Pleistocene basin-fill deposits. Three topographic basins were created as a result of deflation during climate episodes associated with lowering of the local groundwater table. In each case, the three deflational basins or topographic depressions were subsequently filled with sediments; these basin aggradations coincided with changes from arid climate conditions to wetter conditions and a rise in the groundwater table. The oldest and highest sedimentary remnant is associated with Acheulian artifacts and may reflect spring-fed pond and marsh conditions during a Middle Pleistocene wet climate episode. Lithofacies for a lower stratigraphic sequence (the “White Lake”) documents deposition in a perennial lake that varied in extent and depth and is associated with Middle Paleolithic artifacts. A third episode of deflation created a topographic low that has been filled with Late Pleistocene sediments that are associated with Middle Paleolithic artifacts and fossil remains. Lateral and vertical variations in the lithofacies of this basin-fill sequence and the sediments of the “grey-green” lake phases provide a record of changing hydrologic conditions. These hydrologic conditions appear to reflect variations in water-table levels related to groundwater recharge and, at times, local rains.

Źródło:

Studia Quaternaria; 2017, 34; 23-38
1641-5558
2300-0384

Pojawia się w:

Studia Quaternaria

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

The Silurian of the Nida, Holy Cross Mts. and Radom areas, Poland - a review

Autorzy:

Modliński, Z.
Szymański, B.

Powiązania:

https://bibliotekanauki.pl/articles/2059315.pdf

Data publikacji:

2001

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Holy Cross Mountains
Silurian
lithology
biostratigraphy
lithostratigraphy
lithofacies

Źródło:

Geological Quarterly; 2001, 45, 4; 435-454
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:

Controls on basal Zechstein (Wuchiapingian) evaporite deposition in SW Poland

Autorzy:

Dyjaczyński, K.
Peryt, T. M.

Powiązania:

https://bibliotekanauki.pl/articles/2060060.pdf

Data publikacji:

2014

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Zechstein Basin
evaporites
3D seismics
lithofacies
sedimentation
anhydritization
SW Poland

Opis:

The development of basal Zechstein (Wuchiapingian) strata inSW Polandindicates the existence of a diversified relief inherited after the flooding of the pre-existing depression by the transgressing Zechstein sea. The deeper parts of the basin were the place of development of thin basinal Zechstein Limestone showing sedimentary condensation manifested by bored and encrusted grains and thick evaporites (mostly halite), and in shallow parts Zechstein Limestone reefs followed by thinner evaporite sequences (dominated by anhydrite) occur. The analysis of 3D seismic sections showed that instead of three conventionally recognized evaporite units of stratigraphic potential in the PZ1 cycle, five units occur (from the base to the top: Lower Anhydrite, Lower Oldest Halite, Middle Anhydrite, Upper Oldest Halite, Upper Anhydrite). In a particular place their number may vary from two (Lower Anhydrite at the base of the PZ1 cycle and Upper Anhydrite at the top of the PZ1 cycle) to five. There are two complexes of Lower Anhydrite occurring throughout the platform and basinal zones showing deepening-upward (transgressive) trend. The halite sedimentation in the deepest parts of salt basins began shortly after the deposition of the upper Lower Anhydrite complex while in the sulphate platform areas the sulphate deposition lasted still for a long time. The Lower Oldest Halite deposits occur in the depressions. Between the halite basins, anhydrite platforms occur, and the thickness of anhydrite platform deposits is smaller than it is observed in salt basins. The Upper Oldest Halite in turn is recorded above the anhydrite platform. The two halite units represent different phases of development of halite basins. The Lower Oldest Halite basins are related to the pre-Zechstein depressions, although in some cases their syndepositional subsidence was controlled by reactivation, during the deposition of basal Zechstein strata, of former faults. In turn, the Upper Oldest Halite basins used the accommodation space created due to anhydritization of the Lower Anhydrite deposits composed originally of selenitic gypsum. The 3D seismics evidences that the PZ1 evaporites inSW Polandhave been deposited in far more complex and dynamic system than it was assumed before.

Źródło:

Geological Quarterly; 2014, 58, 3; 485--502
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:

Integrated sedimentological and ichnological study of the Coniacian sedimentation in North Sudetic Basin, SW Poland

Autorzy:

Leszczyński, S.

Powiązania:

https://bibliotekanauki.pl/articles/2060087.pdf

Data publikacji:

2018

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

lithofacies
ichnofacies
trace fossils
shallow marine
paralic
North Sudetic Synclinorium

Opis:

Lithofacies and ichnological features of the Coniacian deposits of the upper part of Żerkowice Member and lowest part of the overlying Czerna Formation in southeastern part of the North Sudetic Synclinorium are described and their sedimentary palaeoenvironment is interpreted. The study confirms a shallow-marine to paralic/paludine palaeoenvironment. Sedimentation of the Żerkowice Member occurred in an upper shoreface environment dominated by waves, tidal currents and wave-generated alongshore currents, with an episodic encroachment of fore shore zone and shoal-water deltas. The interpretation is supported by a high-diversity assemblage of trace fossils with 21 ichnogenera, representing a stressed expression of the Skolithos Ichnofacies dominated by Ophiomorpha nodosa and a proximal expression of the Cruziana Ichnofacies with Thalassinoides and rare specimens of diverse other ichnotaxa. Sedimentation of the Czerna Formation commenced after a stasis, with at least a local hiatus caused by emergence, and proceeded in a laterally and vertically more varied environment, with transgressive coastal lagoons evolving into freshwater lakes and marshes and with a repetitive regressive intrusion of shoreface and shoal-water deltas. The emergence of the area is recorded by coal-bearing deposits with plant-root traces. Local occurrence of the Teredolites Ichnofacies in coal (peat) deposits above the base of the Czerna Formation indicates renewed marine flooding. Continuation of the latter is locally evidenced by a trace-fossil assemblage with 17 ichnogenera, representing proximal expression of the Cruziana Ichnofacies followed by distal expression of the Skolithos Ichnofacies in the overlying transgressive-regressive cyclothems. The palaeoenvironmental changes recorded by the sedimentary succession indicate bathymetric fluctuations and imply considerable shoreline shifts and palaeogeographic changes in the basin. These changes are interpreted as a combined signal of 2nd- and 3rd-order eustatic cycles, modified and partly obliterated by the effects of intrabasinal tectonic forcing and by palaeogeographically controlled variation in sediment supply.

Źródło:

Geological Quarterly; 2018, 62, 4; 767--816
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:

Facies architecture of the Cambrian deposits of the Baltica shelf in the Lublin Basin, SE Poland

Autorzy:

Stadnik, Renata
Bębenek, Sławomir
Waśkowska, Anna

Powiązania:

https://bibliotekanauki.pl/articles/191224.pdf

Data publikacji:

2019

Wydawca:

Polskie Towarzystwo Geologiczne

Tematy:

Lower Palaeozoic
Baltica
shelf
sedimentary environments
lithofacies

Opis:

In the Cambrian, the Lublin Basin was a shallow-water area, located on the western edge of the Baltica palaeocontinent. The Cambrian sedimentary sequence, forming the lower part of the sedimentary cover of the North European Platform, is lithologically diversified and reflects dynamic variation in depositional environment. This paper presents the distribution of palaeofacies and sedimentary environments in the early Lublin Basin, including changes in their lateral extent during its evolution in the Cambrian. In order to evaluate the facies architecture of the Lublin Basin, a sedimentological analysis was carried out. On the basis of the detailed logging of drill cores, lithofacies made up of conglomerates, sandstones, mudstones and heterolithic deposits were distinguished; 16 lower-rank sublithofacies were identified. Their specific assemblages are indicative of shelf-type lithofacies associations, i.e. (1) tidal flat with muddy, mixed and sandy tidal plain sublithofacies including subtidal channels; (2) barrier-lagoon; (3) shoreface with lower, middle and upper shoreface subassociations; and (4) offshore with upper and lower offshore subassociations, including sandy tidal ridges. During the early Cambrian, the lateral variability and environmental succession indicate a transgressive, long-term trend and the migration of a lagoonal environment across wide tidal plains and the shoreface up to an offshore environment. The Lublin Basin reached its greatest lateral extent and maximum depth in the upper lower Cambrian. Next, an opposite trend began and during the middle Cambrian a regression cycle is recorded in successive changes in sedimentary environments that reflect a progressive shallowing. Multiple changes in adjacent environments indicate repeated and cyclical, lower-rank ingressions.

Źródło:

Annales Societatis Geologorum Poloniae; 2019, 89, 2; 105-120
0208-9068

Pojawia się w:

Annales Societatis Geologorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

Zmiany układu koryta Chodelki koło Chodlika w późnym vistulianie i holocenie

Autorzy:

Dzierżak, Malwina
Bałaga, Krystyna

Powiązania:

https://bibliotekanauki.pl/articles/763309.pdf

Data publikacji:

2013

Wydawca:

Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej

Tematy:

meandering river
anastomosing river
lithofacies
palynological analysis
rzeka meandrująca
rzeka anastomozująca
litofacje
analiza palinologiczna

Opis:

In this paper the evolution of paleogeographic models of the middle part of the Chodelka valley near Chodlik is presented. In the relief of the bottom valley clear traces of palaeochannels are present. Lithological and palynological analysis helped distinguish two phases in the development of this river. The first phase started in Late Vistulian, and continued in the early Holocene. At that time Chodelka was an anastomosing river. But later it changed its channel pattern to the meandering one. Nowadays the Chodelka river cannot develop naturally, because its trough is largely limited by flood bank.
Artykuł nie zawiera abstraktu w języku polskim

Źródło:

Annales Universitatis Mariae Curie-Sklodowska, sectio B – Geographia, Geologia, Mineralogia et Petrographia; 2013, 68, 1
0137-1983

Pojawia się w:

Annales Universitatis Mariae Curie-Sklodowska, sectio B – Geographia, Geologia, Mineralogia et Petrographia

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

The Ordovician stratigraphy and palaeogeography of the Nida-Holy Cross Mts. area, Poland - a review

Autorzy:

Modliński, Z.
Szymański, B.

Powiązania:

https://bibliotekanauki.pl/articles/2059316.pdf

Data publikacji:

2001

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Holy Cross Mountains
Nida region
Ordovician
biostratigraphy
lithostratigraphy
lithofacies

Opis:

The Ordovician stratigraphy in the Holy Cross Mts. and the Nida region is reviewed. In the Holy Cross Mts. Ordovician rocks have been identified in the Łysogóry and the Kielce segments in tens of outcrops and borehole sections, in the Nida area in three boreholes. The deposits comprise a thin clastic-carbonate succession including palaeontologically dated Tremadoc, Arenig, Llanvirn, Llandeilo, Caradoc and Ashgill sediments. Their lithology, litho- and biostratigraphy and facies distribution are discussed. The most distinct lithofacies boundary and thickness contrast is observed between the Kielce and Łysogóry regions. The former is characterised by carbonates and clastics of shallower shelf with much greater thicknesses.

Źródło:

Geological Quarterly; 2001, 45, 4; 417-434
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

Anhydrite and gypsum in the Devonian and Permian evaporite lithofacies of Belarus : a review

Autorzy:

Makhnach, A.
Shimanovich, V.
Streltsova, G.
Mikhajlov, N.

Powiązania:

https://bibliotekanauki.pl/articles/2060068.pdf

Data publikacji:

2014

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

anhydrite
gypsum
evaporites
Devonian
Permian
Belarus

Opis:

Anhydrite is widespread in the Prypiać Trough in the form of beds and nodules in the Subsaliferous Terrigenous and Carbonate formations (Eifelian and Frasnian), the Lower Saliferous Formation (Frasnian), the Intersaliferous and Upper Saliferous formations (Famennian). It is also present in the Asselian and Sakmarian (Lower Permian) deposits of the trough. The anhydrite is grey, blue, pink and orange. It has massive and, more rarely, horizontal bedding, and a fine- and micro-crystalline structure. Gypsum extends widely across the Orša Depression, Žlobin and Latvijas Saddles and partly in the Belarusian Anteclise, where it lies within the Eifelian deposits. It is also found in the Frasnian strata of the North-Prypiać Shoulder. As a component of facial analogue of the Upper Saliferous Formation gypsum forms the Bryniou deposit in the west of the Prypiać Trough. This mineral is also observed in the Oversaliferous Formation (Famennian) and in the Asselian and Sakmarian strata of the trough. There are spar, saccharoidal, alabastrine and selenitic varieties of gypsum. A medium to coarse crystalline structure is typical. The gypsum is grey, pink, yellow or orange.

Źródło:

Geological Quarterly; 2014, 58, 3; 577-590
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 19.

Tytuł:

The Medobory Hills (Ukraine): Middle Miocene reef systems in the Paratethys, their biological diversity and lithofacies
Miodobory – środkowomioceński system rafowy, jego zróżnicowanie biologiczne i litofacje

Autorzy:

Górka, M.
Studencka, B.
Jasionowski, M.
Hara, U.
Wysocka, A.
Poberezhskyy, A.

Powiązania:

https://bibliotekanauki.pl/articles/2062479.pdf

Data publikacji:

2012

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

coralline algae-vermetid reefs
serpulid-microbialite reefs
lithofacies
biodiversity
Badenian-Sarmatian boundary
Ukraine
Moldova
rafy krasnorostowo-wermetidowe
rafy serpulowo-mikrobialitowe
litofacje
bioróżnorodność
granica baden-sarmat
Ukraina
Mołdawia

Opis:

The unique Middle Miocene reef belt formed within the Paratethyan realm constitutes at present the Medobory Hills in western Ukraine and northernmost Moldova. Not only is the size of this structure (almost 300 km long) quite unusual, but also the development of peculiar facies and their spatial distribution. Two distinct reef generations appear in Medobory (Late Badenian and Early Sarmatian), both separated by a sharp erosional boundary. Two Upper Badenian calcareous lithofacies dominate – organodetrital and biohermal (with coralline-algae as main framework builders accompanied by a rich invertebrate assemblage). The Lower Sarmatian strata, although megascopically very similar to Upper Badenian ones, differ drastically when studied closely. The main reef components here are serpulids and microbialites, usually with ubiquitous, but taxonomically highly impoverished fauna. Differences in lithofacies and biotic communities between both reef systems unveil open-marine environment during formation of Upper Badenian reefs and a drastic change of conditions at the Badenian/Sarmatian boundary (including emersion and intense weathering). The Early Sarmatian basin was established soon after and highly restricted conditions prevailed in it (e.g. with mesohaline waters and intense evaporation occurring simultaneously); its deposits are the last record of Middle Miocene sedimentation within the Medobory area.
Wzgórza Miodoborów, rozciągające się na przestrzeni niemal 300 km na obszarze zachodniej Ukrainy i północnej Mołdawii, założone są na pasie raf miocenu środkowego, uformowanych w obrębie północno-wschodnich peryferii Paratetydy. Znaczne zróżnicowanie litofacjalne, jak i zmienność zespołów biotycznych wśród utworów rafowych jest rezultatem obecności dwóch generacji raf (późnobadeńskiej i wczesnosarmackiej) oddzielonych wyraźną powierzchnią erozyjną. Wśród wapiennych osadów górnego badenu dominują litofacje organodetrytyczne i biohermalne. Ich głównym składnikiem skałotwórczym są krasnorosty, którym towarzyszą bogate taksonomicznie zespoły bezkręgowców, obejmujące m.in. korale, mięczaki, szkarłupnie. Rafy sarmatu dolnego budowane są przez mikrobiality, w obrębie których występują serpule (i podrzednie mszywioły). Silnie zubożona taksonomicznie fauna zamieszkująca rafy sarmackie zdominowana jest przez mięczaki. Różnice bio- i litofacjalne w obrębie wymienionych generacji raf są efektem drastycznej zmiany warunków sedymentacji, połączonej z emersją i intensywnym wietrzeniem, do której doszło na przełomie badenu i sarmatu w efekcie przebudowy basenu przedkarpackiego. W jej wyniku pełnomorski zbiornik późnobadeński został zastąpiony przez silnie izolowany basen wczesnego sarmatu, zaś powstałe w tym ostatnim osady wieńczą sukcesję utworów miocenu w tej części zapadliska przedkarpackiego.

Źródło:

Biuletyn Państwowego Instytutu Geologicznego; 2012, 449; 147--174
0867-6143

Pojawia się w:

Biuletyn Państwowego Instytutu Geologicznego

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 20.

Tytuł:

Origin of marls from the Polish Outer Carpathians: lithological and sedimentological aspects

Autorzy:

Górniak, Katarzyna

Powiązania:

https://bibliotekanauki.pl/articles/2086509.pdf

Data publikacji:

2011

Wydawca:

Polskie Towarzystwo Mineralogiczne

Tematy:

marls
Outer Carpathians
lithologic classification
lithofacies
Northern Tethys
sedimentation conditions
tectonics
volcanism
origin of marls

Opis:

Outcrops of marls, occurring within the sandstone-shaly flysch deposits of the Polish part of Outer Carpathians, considered to be locus typicus of these rocks, were described, measured and sampled. Lithologic features of marls, representing 15 complexes of different age and occurring in 15 complexes of various tectonic units, are presented (Fig. 1, 2). The present studies were concerning Jurassic marls from the Silesian Unit (Goleszów Marls), Upper Cretaceous marls from the Skole and Sub-Silesian Units (Siliceous-Fucoid and Węgierka Marls and Węglowka, Frydek, Jasienica and Zegocina Marls respectively), and Eocene-Oligocene marls from the Magura, Fore-Magura and Skole Units (Łącko, Zembrzyce, Budzów, Leluchów and Niwa, as well as Grybów and Sub-Cergowa and Dynów Marls respectively). The former opinions on lithology, age, formal subdivision, sedimentation conditions and genesis of these rocks are discussed (Table 1, 2; Fig. 1). Detailed description of the above mentioned marl-bearing complexes are presented and for each of them the typical lithological features are determined (Tables 3 - 20). The results of profiling are presented against the background of geological studies of the Carpathian marls. The results of lithologic studies are compared to form a classification scheme and are used as the basis of distinguishing genetic types of marls. Moreover, the interpretation of the conditions of sedimentation of these rocks is presented.

Źródło:

Mineralogia; 2011, 42, 4; 165--297
1899-8291
1899-8526

Pojawia się w:

Mineralogia

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 21.

Tytuł:

Origin of marls from the Polish Outer Carpathians: lithological and sedimentological aspects

Autorzy:

Górniak, K.

Powiązania:

https://bibliotekanauki.pl/articles/2086549.pdf

Data publikacji:

2011

Wydawca:

Polskie Towarzystwo Mineralogiczne

Tematy:

marls
Outer Carpathians
lithologic classification
lithofacies
Northern Tethys
sedimentation conditions
tectonics
volcanism
origin of marls

Opis:

Outcrops of marls, occurring within the sandstone-shaly flysch deposits of the Polish part of Outer Carpathians, considered to be locus typicus of these rocks, were described, measured and sampled. Lithologic features of marls, representing 15 complexes of different age and occurring in 15 complexes of various tectonic units, are presented (Fig. 1, 2). The present studies were concerning Jurassic marls from the Silesian Unit (Goleszów Marls), Upper Cretaceous marls from the Skole and Sub-Silesian Units (Siliceous-Fucoid and Węgierka Marls and Węglowka, Frydek, Jasienica and Zegocina Marls respectively), and Eocene-Oligocene marls from the Magura, Fore-Magura and Skole Units (Łącko, Zembrzyce, Budzów, Leluchów and Niwa, as well as Grybów and Sub-Cergowa and Dynów Marls respectively). The former opinions on lithology, age, formal subdivision, sedimentation conditions and genesis of these rocks are discussed (Table 1, 2; Fig. 1). Detailed description of the above mentioned marl-bearing complexes are presented and for each of them the typical lithological features are determined (Tables 3 - 20). The results of profiling are presented against the background of geological studies of the Carpathian marls. The results of lithologic studies are compared to form a classification scheme and are used as the basis of distinguishing genetic types of marls. Moreover, the interpretation of the conditions of sedimentation of these rocks is presented.

Źródło:

Mineralogia; 2011, 42, 4; 165--297
1899-8291
1899-8526

Pojawia się w:

Mineralogia

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 22.

Tytuł:

Compositional differences between Besko and Otryt sandstones of the Krosno Beds (Oligocene) in Eastern part of the Silesian Tectonic Unit

Autorzy:

Godlewski, P.
Wendorff, M.
Świąder, A.

Powiązania:

https://bibliotekanauki.pl/articles/184392.pdf

Data publikacji:

2016

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

lithofacies
sedimentary features
outcrop

Opis:

The Krosno Formation (Oligocene) in the Silesian Tectonic Unit of the E part of the Polish Outer Carpathians is represented by two lithofacies called the Besko (or Lesko) and the Otryt facies. Their mineral composition was analysed in the past at a broad regional scale (Schideler et al. 1975) and the depositional mechanism for each facies was interpreted on the basis of sedimentary features observed on the outcrop (Ślączka & Unrug 1972, Wendorff 1987). Each of the two lithofacies forms an individual complex of strata supplied from two different source areas by turbidity currents of different hydrodynamic characteristics (Wendorff 1981, 1987). Namely, the strata of the Besko/Lesko lithofacies were interpreted as deposits of normally diluted and gradually decelerating, SE-oriented turbidity currents originating from the Silesian Ridge in the NW. On the other hand, the Otryt lithofacies is represented by deposits of rapidly decelerating high-density turbidity currents running in the opposite direction and derived from the Maramures Massif in the SE (Ślączka & Unrug 1972). The scope of this reconnaissance study is to investigate under petrographic microscope grain size, grain orientation and mineral composition of selected samples of the two sandstone types described above. These features and their comparisons should reveal whether the differences in transport and deposition mechanisms between the two lithofacies, which were in the past interpreted on the basis of macroscopic observations, are reflected by the microscopically observable features. For this purpose, and considering the reconnaissance character of this work, vertical sections of two sandstone beds were sampled in the area of the Otryt Syncline (in the Bieszczady Mts.) where these two lithofacies complexes are present. For each bed, one sample represents its lowermost part and another uppermost part. Therefore the textural characteristics of each pair of samples document hydrodynamic variations between the initiation and the final stage of deposition of the sampled bed. This is because various transport and deposition mechanisms of sediment gravity flows, and their gradients, result in differences in grain size, grain size sorting and grain orientation within a bed. The diversity of mineral composition between Besko and Otryt lithofacies is very clearly recorded in the analysed thin sections, which remains in agreement with the data published earlier and reflects different mineral composition of the respective source areas (Ślączka & Unrug 1972, Shideler et. al. 1975). The sample of the Besko lithofacies sandstone is characterised by high textural and mineralogical maturity (well-rounded grains and high quartz content). The bottom sample is moderately well sorted (standard deviation 0.64) and the top sample is moderately sorted (standard deviation 0.95). Graphic mean grain size for the bottom sample is 3.20 (Bouma Tb interval), and for the top sample 3.76 (Bouma Tc interval; both values being expressed in phi scale units). Therefore the upper sample represents deposition from a more diluted current (of lower flow competence) than the bottom sample. Less good sorting in the finer grained upper sample reflects pronounced contrasts in grain-size between individual laminae of the current-ripple cross-laminated Tc interval. Both samples of the Otryt facies sandstone show relatively high content of unstable grains, therefore this rock has low mineralogical maturity. Except for solitary well-rounded coarse grains, the bulk of grains are poorly rounded, which documents low textural maturity. The bottom sample of the Otryt facies is richer in grains of coarse to very coarse metamorphic rock fragments and polycrystalline quartz than the top-of-bed sample. Texturally, both samples are poorly sorted. This is shown by very similar standard deviation values (bottom 1.18; top 1.12). The values of graphic mean grain size range from 1.68 (bottom) to 1.92 (top). Furthermore the grain-size distribution curve of the sample from the bed bottom is characterised by coarse-tail, whereas the upper sample distribution is devoid of coarse-tail. These values and their distributions imply grain-size sorting by a high-density turbidity current unable to separate the various grain-size classes present in the flow. In such flows only the coarsest fraction is present initially but the remaining spectrum of the grains remains unchanged throughout the depositional process (Shideler et. al. 1975). A comparison between the two sets of samples shows the influence of two different flow types expressed by notable differences in grain size and sorting. The Besko facies sandstone is finer grained due to having been deposited from a more diluted current of lower competence. Furthermore, the Besko facies sandstone must have been deposited from a gradually decelerating current whereas the Otryt facies sandstone was deposited rapidly by denser turbidity current in which grain-size sorting affected only the coarsest grains. As a consequence grain orientation parallel to the flow direction is more distinct in the Besko facies than in the Otryt facies sandstones.

Źródło:

Geology, Geophysics and Environment; 2016, 42, 1; 73-74
2299-8004
2353-0790

Pojawia się w:

Geology, Geophysics and Environment

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 23.

Tytuł:

The Ordovician rocks of Pobroszyn in the Łysogóry region of the Holy Cross Mountains, Poland

Autorzy:

Trela, W.
Salwa, S.
Szczepanik, Z.

Powiązania:

https://bibliotekanauki.pl/articles/2059263.pdf

Data publikacji:

2001

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Holy Cross Mountains
Łysogóry region
Ordovician
lithofacies
acritarchs
tectonics

Opis:

In the village of Pobroszyn near Opatów, a faulted section of Ordovician deposits represented by upper Tremadoc clayey-silty lithofacies, upper Arenig carbonate-phosphorite lithofacies and Upper Ordovician claystones with limestone interbeds, were identified. The upper Tremadoc is dated on basis of acritarch. This is the first time that upper Tremadoc deposits have been documented in the Łysogóry region. The late Arenig transgressive deposits were probably preceded by emergence in the latest Tremadoc and early Arenig. The Ordovician rocks from Pobroszyn are intensely tectonised. Two groups of faults, oblique and longitudinal, are distinguished. The first one strikes from 120-140°, and dip to NE at 40-45°, and the second one that strikes 15-25° and dips 65-80° to E.

Źródło:

Geological Quarterly; 2001, 45, 2; 143-154
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 24.

Tytuł:

Climatic and tectonic effects on the origin and evolution of the Dereiçi travertines (the Başkale Basin, Eastern Türkiye), and neotectonic implications

Autorzy:

Yeşilova, Çetin

Powiązania:

https://bibliotekanauki.pl/articles/2201222.pdf

Data publikacji:

2022

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Başkale Basin
Dereiçi travertines
U/Th dating
lithofacies
palaeoclimate

Opis:

The Başkale Basin is located in the easternmost part of Türkiye, within a tectonically active area, and located at the intersection of Europe, Asia and the Middle East. In this study, the Dereiçi travertines, one of the most important products of neotectonism in the basin, were investigated sedimentologically, mineralogically and geochemically. To understand the neotectonic evolution of the travertine succession, the sequence was studied from bottom to top as regards morphology, lithofacies and U/Th dates. Crystalline crust, coated gas bubbles, shrub, paper-thin raft and palaeosol lithofacies have been detected in the Dereiçi travertines, which are morphologically of layer type, two ridge types and terrace type. The Dereiçi travertines commenced to precipitate at the intersection of the Işıklı and Ilıcak faults at 255.56 ±9.01 ka, and their deposition continues today. Travertine deposition paused twice between 198.31 ±18–143.07 ±1.5 ka and 96.73 ±8.34–61.59 ±5.4 ka, when palaeosol development took place. According to field and laboratory studies, the Dereiçi travertines developed under climate and tectonic control. The Işıklı and Ilıcak faults played active roles in the development of the travertines. As the travertine ages are linked to movement on both faults, the age of the Işıklı Fault should be 255.56 ±9.01 ka or earlier, and that of the Ilıcak Fault should be 143.07 ±1.5 ka or earlier.

Źródło:

Geological Quarterly; 2022, 66, 3; art. no. 27
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 25.

Tytuł:

“Bottomsets” of the lava−fed delta of James Ross Island Volcanic Group, Ulu Peninsula, James Ross Island, Antarctica

Autorzy:

Nehyba, Slavomír
Nývlt, Daniel

Powiązania:

https://bibliotekanauki.pl/articles/2049758.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Antarctica
James Ross Island
lava−fed delta
lithofacies
Pliocene

Źródło:

Polish Polar Research; 2015, 1; 1-24
0138-0338
2081-8262

Pojawia się w:

Polish Polar Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

Investigation of lithofacies predictability using the Shannon (information) entropy theorem : the Upper Eocene “Górka Lubartowska” amber deposit of the Siemien Formation

Autorzy:

Czuryłowicz, Krzysztof

Powiązania:

https://bibliotekanauki.pl/articles/2185977.pdf

Data publikacji:

2022

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Shannon entropy
uncertainty
facies probability
Multiple-Point Statistics

Opis:

A generalized workflow of scientific process requires data to be obtained, reprocessed, integrated, optionally transformed, modelled and finally interpreted in order to understand the underlying process. This procedure is affected by both objective and subjective uncertainties. In parallel with the development of geostatistics, the role of uncertainty has been widely investigated in geosciences. This has led to the introduction of new concepts, taken for example from thermodynamics, such as entropy. Predicting the subsurface is an especially thankless effort, as data are driven from spatially highly limited direct sources. The following paper provides an review of various applications of the Shannon entropy theorem in geoscience. Information entropy, initially proposed by Shannon (1948) provides an objective measure of overall system uncertainty. Significant concern has been focused on the application of Shannon entropy to provide an objective measure of joint system uncertainty and visualization of its spatial distribution. The area of extensively drilled Eocene amber-bearing deposits located in the Lubelskie voivodeship was selected as a case study to investigate the quality of prediction stochastic lithofacies models. The importance of adding secondary variables to a stochastic model is also reviewed here. Adding new data and rerunning the simulation allows assessment of its impact on the predictability of a stochastic model. The most important conclusion from the study is that the deposition of amber-bearing lithofacies occurred mostly in the northern part of the area investigated, as shown also by ongoing exploitation of the deposit.

Źródło:

Geological Quarterly; 2022, 66, 2; art. no. 16
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

Neogene terrestrial sedimentary environments of the Orava-Nowy Targ basin : case study of the Oravica section near Čimhová, Slovakia

Autorzy:

Łoziński, M.
Wysocka, A.
Ludwiniak, M.

Powiązania:

https://bibliotekanauki.pl/articles/2060622.pdf

Data publikacji:

2015

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

sedimentology
lithofacies
Neogene
Orava-Nowy Targ basin
Carpathians

Opis:

The Orava-Nowy Targ Basin is an intramontane depression located at the border of the Inner and Outer Carpathians. It is filled mostly with fine-grained terrestrial and fresh-water deposits of Neogene and Quaternary age, which record the structural evolution and denudation processes of the surrounding regions: Orava, Podhale, and the Tatra Mts. The Orava-Nowy Targ Basin fill was studied in the Oravica River section, which reveals 90 m thick Neogene deposits and allows observation of their lateral diversity. Fifteen lithofacies and seven facies associations distinguished here document the depositional evolution of the basin fill, starting from hill-slope debris flow through silt turbidite-bearing lake, to flood-dominated fluvial plain, swamp and alluvial fan deposits, as well as a pyroclastic event. The palaeorelief was low during deposition and the Orava-Nowy Targ Basin could have spread significantly more to the south.

Źródło:

Geological Quarterly; 2015, 59, 1; 21--34
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

The outwash plain of the rospuda river valley –a record of depositional environments

Autorzy:

Pochocka-Szwarc, Katarzyna
Krzyszkowski, Dariusz

Powiązania:

https://bibliotekanauki.pl/articles/2025811.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Rospuda River
subglacial channel
valley outwash plain
lithofacies analysis
ice-sheet limits
Nauki o Ziemi

Opis:

The Rospuda subglacial chan nel hosts not only deep rib bon lakes and the Rospuda River it self, but also an outwash plain. The pa per deals with a lithofacies anal y sis of de pos its from ex po sures within the Rospuda outwash plain. With the sup port of geomorphological and geo log i cal anal y ses, it has been found that the outwash plain formed along the Rospuda subglacial chan nel that was be ing ex posed from un der the ice cover. The lithological re cord of the Rospuda outwash plain shows a dis tinct di vi sion into a prox i mal and a dis tal zone. The de pos its un der study re veal a re cord of a break in basial sed i men ta tion, when ice-wedge casts de vel oped un der con ditions of periglacial cli mate. The de vel op ment of the Rospuda outwash plain is linked with the ice-mar ginal zone of the Pom er a nian phase, sim i larly to the Olecko-Rajgród outwash plain that is lo cated to the west.

Źródło:

Studia Quaternaria; 2015, 32; 63-78
1641-5558
2300-0384

Pojawia się w:

Studia Quaternaria

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

Sedimentology and Diagenesis of the Miocene Nutaysh Member of the Burqan Formation in the Midyan Area, Northwestern Saudi Arabia

Autorzy:

Al-Ramadan, K.
Dogan, A.
Senalp, M.

Powiązania:

https://bibliotekanauki.pl/articles/2060020.pdf

Data publikacji:

2013

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Turbidite
lithofacies
diagenesis
Early Miocene
Saudi Arabia

Opis:

Turbidite sandstones deposited in rift settings are currently among the main targets of hydrocarbon exploration. However, the impact of style of sedimentation, cyclicity and diagenesis on reservoir quality of such sandstones is relatively poorly explored in the literature. The sedimentology, stratigraphic architecture, and diagenetic alterations of deep marine sandstones of the Mocene Nutaysh member of the Burqan Formation in the Midyan area (Saudi Arabia) are described based on number of measured sedimentologic sections, lithofacies identification in the field and laboratory studies. Three lithofacies types are here identified in the measured sections. These are from bottom to top: (1) “Lithofacies A” consisting of massive to thickly-bedded, coarse-to-very coarse-grained sandstone and conglomerates; (2) “Lithofacies B” consisting of well-bedded, coarse-to-medium-grained, well-sorted sandstone, and (3) “Lithofacies C” consisting of thin-bedded, fine to very fine-grained, current-rippled sandstone, bioturbated shaley siltstone and marl. The main diagenetic processes in the sandstones include the formation of grain-coating smectite and rhombic dolomite. Small amounts of cements include the formation of authigenic kaolinite and calcite. The reservoir quality is anticipated to have been preserved under the transformation of smectite to deep burial illite, which is believed to prevent formation of quartz cements.

Źródło:

Geological Quarterly; 2013, 57, 1; 165--174
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 30.

Tytuł:

Revised stratigraphy and palaeogeography of the Rostan Hills in northwestern Ukraine

Autorzy:

Rychel, Joanna
Orłowska, Anna
Zbucki, Łukasz
Nowacki, Łukasz
Zalesskij, Ivan

Powiązania:

https://bibliotekanauki.pl/articles/2025050.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

ice-sheet dynamics
petrographic analysis
lithofacies analysis
Elsterian ice sheet
MIS 12
NW Ukraine

Opis:

This paper presents a new approach to stratigraphy and palaeogeography of NW Ukraine. So far, the glacial landforms near the Rostan area have been interpreted as end moraines derived from the Saalian ice-sheet. Sedimentological and petrographic analyses conducted at the Rostan site shed new light on the dynamics and age of the ice-sheet that formed the examined glaciogenic forms. Sedimentological analysis of glacial deposits documented the sedimentary environment of a glaciofluvial fan deposited by the ice-sheet front characterised by varying dynamics, i.e. advancing, stationary and retreating. Petrographic analysis proved an older age of deposits, i.e. Elsterian, and not Saalian as interpreted so far. These results shed new light on palaeogeography and stratigraphy of this area. The occurrence of the Elsterian deposits on the surface gives evidence of the absence of younger – Saalian – glaciation in this area, which relates to the recently announced new approaches to palaeogeography and stratigraphy of neighbouring areas in eastern Poland.

Źródło:

Studia Quaternaria; 2021, 38, 1; 33-41
1641-5558
2300-0384

Pojawia się w:

Studia Quaternaria

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 31.

Tytuł:

Analysis of Sediments in the North-East Morainic Upland Edge Zone in the Vicinity of Piaski Pomorskie (West Pomerania, NW Poland)

Autorzy:

Paluszkiewicz, Ryszard
Paluszkiewicz, Renata

Powiązania:

https://bibliotekanauki.pl/articles/1052742.pdf

Data publikacji:

2016-03-15

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

morainic upland edge zone
lithofacies analysis
the Pomeranian Phase
west Pomerania

Opis:

The aim of this article is the description of lithofacies characteristics of sediments forming the north-east part of the morainic upland edge zone in the vicinity of Piaski Pomorskie (west Pomerania). the paper undertake also an attempt to reconstruct paleogeographical conditions of the formation of moranic uppland edge. The diversification of glaciofluvial and fluvial processes during the phase of stagnation and recession of uppervistulian ice-sheet in the vicinity of Piaski Pomorskie (western Pomerania) led to the formation of a morainic upland edge distinctly marked in morphology The edge zone separates the undulating moraine plateau from a lower situated Dębnica River Valley. This area is mostly formed by fine-grained sands with occasional layers of a coarser fraction of gravel and coarse- and medium-grained sands. The observed type of low-angle cross-stratification and trough cross-stratification indicates the dominance of diversified energy depositional environment with considerable power of water as transporting medium. the research area was formed at the front of the ice-sheet, which receded from the nearby reach of the Pomeranian Phase of the weichselian glaciation.

Źródło:

Quaestiones Geographicae; 2016, 35, 1; 29-36
0137-477X
2081-6383

Pojawia się w:

Quaestiones Geographicae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

Lithofacies and terrestrial sedimentary environments in AMS measurements: case study from Neogene of Oravica River section, Čimhová, Slovakia.

Autorzy:

Łoziński, M.
Ziółkowski, P.
Wysocka, A.

Powiązania:

https://bibliotekanauki.pl/articles/2059848.pdf

Data publikacji:

2016

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

anisotropy
magnetic susceptibility
facies analysis
terrestrial environments
Neogene
Orava-Nowy Targ Basin

Opis:

The anisotropy of magnetic susceptibility (AMS) of sedimentary rocks has been used for interpreting wide range of processes: early rock deformations, palaeotransport directions, as well as the evolution of mineral content. Various sedimentary factors which may determine magnetic susceptibility within lacustrine, river, floodplain and swamp deposits have been examined in the Oravica section of the Orava-Nowy Targ Basin. Multiple components of mineral content: illite, chlorite, smectite, kaolinite, quartz and unidentified high susceptibility phase make an AMS interpretation of this content ambiguous. However, this method may be useful for tracing early diagenetic geochemical/microbial processes where iron element is involved. Some sedimentary processes may be recognized from AMS when an assemblage of parameters is studied together: bulk susceptibility, the degree and the shape of anisotropy, principal directions, and the distribution of all these parameters within a set of specimens. Debris-flow processes, as well as lacustrine and floodplain sedimentation are especially well-defined in AMS results. Palaeotransport directions are ambiguous because studied rocks have undergone weak deformation what overprints this sedimentary feature. Most specimens represent an oblate shape of anisotropy and show a good correlation of minimum susceptibility axis and normal to bedding plane.

Źródło:

Geological Quarterly; 2016, 60, 2; 259--272
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 33.

Tytuł:

Factors controlling a depositional architecture in synorogenic Outer Carpathian basins – an example of Oligocene-age successions from the Fore-Magura Unit, Poland

Autorzy:

Siwek, Piotr
Waśkowska, Anna
Wendorff, Marek

Powiązania:

https://bibliotekanauki.pl/articles/24202122.pdf

Data publikacji:

2023

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

Polish Outer Carpathians
tectonics
lithofacies analysis
sedimentological analysis

Opis:

AFore-Magura Unit is strongly tectonically-engaged tectonic unit of the Polish Outer Carpathians, sandwiched between Magura and Silesian nappes. Due to poor and sparse exposure of the Fore-Magura Unit, which is covered by the Magura Nappe, there has been no comprehensive interpretation of depositional systems of the Fore-Magura Basin (Eocene–Oligocene), a part of the Paratethys realm. Therefore, in order to broaden our knowledge about depositional conditions in this part of the Outer Carpathian basins, two turbidite sequences (Szczawa and Klęczany) were subjected to detailed lithofacies and sedimentological analysis. The 100 m thick Szczawa section is predominantly composed of thin and medium thick turbidite sandstones associated with co-genetic turbidite mudstones, which thickness greatly exceeds that of underlying sandstone. The latter ones show another peculiar features, like opposite palaeocurrent directions between base and top of a bed, mud-rich banded and heterolithic structures, and combined-flow bedforms, including small-scale hummocky-type structures. All those sedimentary features reflect deposition from mud-rich low-density turbidity currents enclosed within small confined basin, which prevent each flow from further down-current propagation, and eventually resulted in trapping (ponding) of the whole flow within confinement, a process associated with flow reflections and internal Kelvin-Helmholtz waves propagation (Siwek et al., 2023). This mini-basin can be situated on the southern flank of the Fore-Magura Basin, i.e., on the slope of the Fore-Magura Ridge (Siwek et al., 2023). The 170 m thick succession at Klęczany is composed of thick-bedded amalgamated sandstones, grading into sandstone-mudstone turbidite sequences. The former reflect deposition from high-density turbidity currents and hybrid flows, and are stacked into a few to over ten metres thick tabular lobes, and can be interpreted as lobe axis or distributary channel deposits. These lobes are often topped by socalled ‘bypass’ facies indicating the moment a lobe attained a critical thickness which prevented the accommodation of new deposit, thus heralding a feeder channel avulsion. The recurring process of lobe building and feeder channel avulsion resulted in compensational stacking of subsequent lobes (Piazza & Tinterri, 2020). The upper part of the Klęczany section reflects deposition from low-density turbidity currents and aggradation of turbidite beds into upward-thickening sequences resulting from lateral compensation and/ or forward progradation of subsequent lobes. Considered as a whole, the Klęczany succession is fining upward, and shows decrease of sand net-to-gross, accompanied by increase of more distal facies. Therefore, that depositional system can be situated within single submarine base-of-slope fan featured by retrogradational stacking pattern. Ponded turbidite beds, together with their whole inventory of sedimentary structures, are an evidence of the crucial influence of structural confinement on unrestricted flow propagation on the seafloor. The presence of structural confinement on the basin slope may have been associated with regional compression and tectonic activity of the Outer Carpathian basins. In the case of the Klęczany section, shortterm autocyclicity is manifested in compensational lobe stacking pattern and cyclic feeder channel avulsions. A longterm variability, probably covering the whole Fore-Magura realm, can be identified with one sequence stratigraphy cycle  – from forced regression resulting from sea-level falling stage to sea-level lowstand, reflected in the transition from amalgamated massive sandstones to sandstone-mudstone turbidite sequences (Catuneanu, 2006). Alternatively, the uplift-denudation cycle due to tectonic activation of source area (Mutti et al., 2003) can be considered as an explanation of retrogradational stacking pattern of the Klęczany Fan, with eustatic sea-level fall involved (Pszonka et al., 2023). To conclude, the regional and local changes of depositional conditions in deep-water basins can be related to tectonics, as well as to eustatic short- or long-term sea-level changes, or combination of both, and can give the readable rock record in sedimentary successions accumulated especially in synorogenic marginal basins (Pszonka et al., 2023). These include foreland-type Outer Carpathians basins during Oligocene times, which were located in the Central Paratethys isolated from the Tethys Ocean during Eocene-Oligocene geotectonic reconstruction of the Circum-Carpathian realm.

Źródło:

Geotourism / Geoturystyka; 2023, 1-2 (72-73); 61--63
1731-0830

Pojawia się w:

Geotourism / Geoturystyka

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 34.

Tytuł:

Glacifluwialne facje strumieni przeciążonych zawiesiną na przykładzie plejstocenskich osadów wschodniej Jutlandii i Pomorza Zachodniego
Glaciofluvial facies of hyperconcentrated flow (the Pleistocene of Denmark and Western Pomerania)

Autorzy:

Pisarska-Jamroży, M.

Powiązania:

https://bibliotekanauki.pl/articles/2074531.pdf

Data publikacji:

2007

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

strumienie przeciążone zawiesiną
analiza litofacjalna
hyperconcentrated flow
lithofacies analysis

Opis:

Beverage & Culbertson (1964) defined hyperconcentrated flow as a flow of water-sediment mixture with a behaviour intermediate between that of a debris flow (mudflow) and that of a stream flow. However, the essence of this definition has largely been misunderstood and lost in the subsequent literature. It would appear that almost any deposit can possibly be attributed to a hyperconcentrated flow, because this genetic label has been attached to: non-stratified deposits with normal or inverse-to-normal grading, as well as deposits that were stratified; some of these deposits had polymodal and only other bimodal grain-size distribution, occasionally bearing outsized cobble gravels and boulders. Arguably, the Beverage and Culbertson original definition implies a turbulent, non-Newtonian fluidal flow with pseudoplastic rheological behaviour, intermediate between that of a mudflow (plastic) and a stream flow (Newtonian fluid), which may suggest sediment deposition by rapid dumping from suspension (Lowe, 1988; Vrolijk & Southard, 1997), rather than tractional emplacement. The study areas in Western Pomerania and east Jutland are located in transition fan and glaciofluvial fans (Weichselian glaciation). Three assemblages of deposits derived from hyperconcentrated flow are exposed: massive cobble gravel (monofacial association GCm), massive sand (monofacial association Sm) and massive sand and planar-cross bedded sand (lithofacies association Sm, Sp). The reason for significant grain-size distribution diversity of sediments derived from the same depositional process was difference in competence flow which came out from discharge flow changes. Despite different grain framework grain-size distribution, grains within hyperconcentrated flows were mostly moved by turbulences and dispersive grain pressure.

Źródło:

Przegląd Geologiczny; 2007, 55, 6; 503-510
0033-2151

Pojawia się w:

Przegląd Geologiczny

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 35.

Tytuł:

Deformacje osadów kenozoicznych w zachodniej ścianie odkrywki Koźmin KWB „Adamów”
Deformations of Cenozoic sediments in the western face of Koźmin outcrop KWB ,,Adamów”

Autorzy:

Stępień, B.

Powiązania:

https://bibliotekanauki.pl/articles/294348.pdf

Data publikacji:

2015

Wydawca:

Stowarzyszenie Geomorfologów Polskich

Tematy:

glacitektonika
analiza strukturalno-litofacjalna
centralna Polska
glaciotectonics
structural and lithofacies analysis
Central Poland

Opis:

Deformacje osadów kenozoicznych w odsłonięciu w Koźminie znajdują się pomiędzy drugim poziomem nadkładu a poziomem eksploatacyjnym. Wśród zaburzeń wyróżniono mezostruktury o wielkości od kilkunastu do kilku metrów oraz drobne struktury deformacyjne o rozmiarach od kilku do kilkudziesięciu centymetrów. Pomiary strukturalne zostały zestawione w formie sferycznych diagramów wraz z rekonstrukcją kierunku lokalnego nacisku lądolodu. Analiza lokalnych pól naprężeń w oparciu o pomiary orientacji i wergencji struktur deformacyjnych pozwoliła wyznaczyć kierunki głównego nacisku (transportu glacitektonicznego) skierowanego z NNE–NE ku SSW–SW w przedziale azymutów 5–42°. Analizowane struktury deformacyjne związane są z nasunięciem lądolodu zlodowacenia Odry.
Deformations of Cenozoic sediments in Koźmin exposure are situated between the second level of overlayer and a brown coal bench. In registered disturbances mesostructures in size from several to couple meters and fine structures in size from few to several dozen centimetres. The structural analysis was compiled in the spherical diagrams with the reconstruction of local ice flow. The examination of local stress poles on the basis of orientations and vergences measurements allowed to evaluate the main stress directions (glaciotectonic transport) from NNE–NE to SSW–SW (5–42° azimuth). Deformation structures are connected with ice-sheet of Odranian Glaciation.

Źródło:

Landform Analysis; 2015, 30; 29-40
1429-799X

Pojawia się w:

Landform Analysis

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 36.

Tytuł:

Facies characterisation of a shallow-water deltaic succession: the Upper Jurassic Wagad Sandstone Formation of Kachchh, western India

Autorzy:

Joseph, J. K.
Patel, S. J.

Powiązania:

https://bibliotekanauki.pl/articles/94430.pdf

Data publikacji:

2018

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

Lithofacies
Oxfordian/Kimmeridgian
offshore
shallow-water delta
South Wagad Fault
litofacja
oksford
kimeryd
delta

Opis:

Ancient deltaic facies are difficult to differentiate from tidally influenced shallow-marine facies. The Wagad Sandstone Formation of the Wagad Highland (eastern Kachchh Basin) is typified by offshore and deltaic facies with sedimentary characteristics that represent different conditions of hydrodynamics and related depositional processes. The study area, the Adhoi Anticline, constitutes a ~154-m-thick, shale-dominated sequence with progressive upward intercalations of bioturbated micritic sandstone and quartz arenite. Two thick Astarte beds (sandy allochemic limestone), with an erosional base and gravel blanketing, illustrate tidal amplification and high-energy stochastic events such as storms. Sedimentological characteristics document three depositional facies: an offshore, shale-dominated sequence prograding to proximal prodeltaic micritic sandstone and quartz arenite with sandy allochemic limestones, further prograding to mouth bars and abandoned channel deposits. The Wagad Sandstone Formation displays depositional environmental conditions that are dissimilar from those of coeval deposits in Kachchh sub-basins as well as on regional and global scales. This is attributed to a reactivation of the Kachchh Mainland and South Wagad faults which resulted in detachment and uplift of the Wagad block which then experienced prograding deltaic conditions.

Źródło:

Geologos; 2018, 24, 2; 137-150
1426-8981
2080-6574

Pojawia się w:

Geologos

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 37.

Tytuł:

Sedimentological interpretation and stratigraphical position of glacigenic deposits in the Napęków area (Holy Cross Mountains, Poland)

Autorzy:

Ludwikowska-Kędzia, M.
Pawelec, H.
Adamiec, G.

Powiązania:

https://bibliotekanauki.pl/articles/94633.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

lithofacies
microstructures
lithostratigraphy
chronostratigraphy
Pleistocene
Central Poland
litofacje
mikrostruktury
litostratygrafia
chronostratygrafia
plejstocen
Polska Centralna

Opis:

The identification of depositional conditions and stratigraphical position of glacigenic deposits in the Napęków area is important for the genetic and stratigraphical interpretation of Quaternary deposits in the central part of the Holy Cross Mountains, as well as for a revision of the course and extent of Middle Polish (Saalian) glaciations. These deposits comprise a series of diamictons which occur between sandy-gravelly deposits. Based on results of macro- and microscopic sedimentological investigations, analysis of heavy mineral composition, roundness and frosting of quartz grains, as well as OSL dating, this complex must have formed during the Odranian Glaciation (Drenthe, Saalian, MIS 6). Sandy-gravelly deposits are of fluvioglacial and melt-out origin. Diamictons represent subglacial traction till. Their facies diversity is a result of variations in time and space, complex processes of deposition and deformation, responsible for their formation at the base of the active ice sheet. This glacigenic depositional complex was transformed by erosion-denudation and aeolian processes in a periglacial environment during the Vistulian (Weichselian, MIS 5d-2).

Źródło:

Geologos; 2015, 21, 4; 261-284
1426-8981
2080-6574

Pojawia się w:

Geologos

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 38.

Tytuł:

Stratigraphic position of tills in the Orłowo Cliff section (northern Poland): a new approach

Autorzy:

Woźniak, Piotr Paweł
Sokołowski, Robert J.
Czubla, Piotr
Fedorowicz, Stanisław

Powiązania:

https://bibliotekanauki.pl/articles/2025278.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

lithofacies analysis
petrographic composition
till fabric
TL dating
Middle and Late Pleistocene
Nauki o Ziemi

Opis:

The site at Orłowo Cliff was used to analyse the stratigraphic position and palaeogeographic interpretations of the properties and depositional conditions of two basal tills from the Late Pleistocene. A multi-proxy approach involved lithofacies, petrographic analysis of the fine gravel fraction, analyses of indicator erratics and till fabric. TL dating of intra-moraine deposits was used to determine depositional time frames of tills. The sediment profile at Orłowo Cliff shows a distinct reduction in number of Pleistocene units. Obtained dating results suggest the presence of Middle and Late Pleistocene fluvial units. The main issue discussed is the stratigraphic position of the older till (Unit O-4). It can be assumed that this till was deposited probably during the Middle Weichselian (MIS4). At Orłowo Horn the till of Unit O-4 reveals incorporation of the erratic material derived from an older till in the surrounded area (according to petrographic composition – probably from MIS 8). The younger till (Unit O-6) was deposited in the Late Weichselian (MIS 2). Moreover, the till of Unit O-6 is characterised by a significant shift towards the south-west in terms of the erratic origin in Unit O-4.

Źródło:

Studia Quaternaria; 2018, 35; 25-40
1641-5558
2300-0384

Pojawia się w:

Studia Quaternaria

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 39.

Tytuł:

Lower Kimmeridgian facies and sedimentary succession of a shallow-water coated-grain-dominated carbonate ramp of the northern peri-Tethyan shelf : an example from the Radomsko Folds (central Poland)

Autorzy:

Olchowy, Piotr
Krajewski, Marcin

Powiązania:

https://bibliotekanauki.pl/articles/2060146.pdf

Data publikacji:

2020

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Late Jurassic
carbonate ramp
Kimmeridgian
oncoids
lithofacies

Opis:

An Upper Jurassic succession is exposed in the active Rogaszyn Quarry (Kodrąb area) located in the Radomsko Folds structure (central Poland). Six facies types were distinguished, comprising oolitic, oncolitic, biodetrital and pelitic limestones as well as marls and marly clays. Typical lithologies are limestones with coated grains deposited in shall ow-water, fore-shoal, shoal and lagoonal parts of a carbonate ramp. Three types of ooid and three types of oncoid were identified, which display several shapes and sizes, and a complex structure of cortices. The ooid types show micritic, radial-fibrous and mixed, micritic/radial-fibrous cortices. Type 1 oncoids comprise micritic or bioclastic nuclei enveloped by non-laminated or laminated micritic cortices. Type 2 oncoids are composed of micritic or bioclastic nuclei and laminated, fossil-bearing cortices covered by microbial envelopes. Type 3 oncoids are the largest of the oncoids observed, attaining cm-scale dimensions. These oncoids are formed of a Bacinella-dom i nated meshwork incorpo fating smaller ooids and oncoids, or they have bioclastic or micritic nuclei covered by complex cortices with micritic, laminated, fossil-bearing, Bacinella-dominated fabric and microbial envelopes. Boundaries between the specific types of cortical envelopes are usually sharp and accentuated by organic encrustations, elongated bioclasts or borings. Commonly found are chambers of the ichnogenus Entobia representing the boring traces of carbonate-excavating sponges and the cryptoendolithic foraminifer Troglotella incrustants. The complex cortices indicate different growth stages of oncoids at different conditions of currents and microbial activity. Carbonate deposition was accompanied by mixed siliciclastic-carbonate sedimentation resulting in multiple intercalated layers of marls and pelitic limestones as well as marly clays. The deposits exposed in the Rogaszyn Quarry as well as in the Kodrąb area are compared with the neighbouring Upper Jurassic deposits of the Szczerców area and the Sw margin of the Holy Cross Mts. (both central Poland). The successions from the Kodrąb area are generally similar to the Lower Kimmeridgian sequences known from adjacent areas, but with locally observed facies variability.

Źródło:

Geological Quarterly; 2020, 64, 4; 969--987
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 40.

Tytuł:

Analysis and modeling of petrophysical parameters of the Main Dolomite formation on the basis of well logging and seismic data

Autorzy:

Niepsuj, M.
Krakowska, P.

Powiązania:

https://bibliotekanauki.pl/articles/955192.pdf

Data publikacji:

2012

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

Main Dolomite
lithofacies zone
petrophysical parameters
cementation factor
Borai formula
Shell formula
fluid substitution
seismic inversion

Opis:

The Main Dolomite is one of the most prospective hydrocarbon reservoir formations in Poland. The goal was to determine the Main Dolomite zonation in selected part of carbonate platform sedimentation area and also to analyze the influence of cementation factor on water saturation by well logging and seismic data integration. Well logging interpretation quantitatively characterized petrophysical parameters. Seismic inversion presented the distribution of the parameters at vertical and horizontal scales. Basic statistical calculations of petrophysical parameters, 2D crossplots and seismic inversion were made. The central part of the Main Dolomite interval indicated the best reservoir properties. High porosity values and low P-wave velocity, low bulk density and low water saturation values were observed in the analyzed zone. Mudlogging confirmed the occurrence of gas. Determination of hydrocarbon saturation in carbonates is a challenge for well logging interpretation and geophysical interpretation. The cementation factor is one of the main coefficients in petrophysics which strongly affect water saturation. Adopting the wrong value of this parameter causes serious error in the coefficient of the water saturation value. In the paper, water saturation was modeled using the Borai equation and Shell formula. By using the computed water saturation and fluid substitution method theoretical velocities of P-waves and S-waves (also P-wave/S-wave velocity ratio) were calculated. Results of the comprehensive interpretation of logs are the basis for lithology determination but P-wave and S-wave velocity can also serve as a source information about lithology. In reservoir rocks VP/VS ratio may also work as a confirmation of gas saturation.

Źródło:

Geology, Geophysics and Environment; 2012, 38, 3; 317-327
2299-8004
2353-0790

Pojawia się w:

Geology, Geophysics and Environment

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 41.

Tytuł:

Sequences of the lithofacies and depositional intervals in the Godula Beds of the Polish Outer Carpathians
Sekwencje litofacji i interwałów depozycyjnych w warstwach godulskich Karpat

Autorzy:

Słomka, T.
Słomka, E.

Powiązania:

https://bibliotekanauki.pl/articles/191192.pdf

Data publikacji:

2001

Wydawca:

Polskie Towarzystwo Geologiczne

Tematy:

Carpathian flysch
Markov chains
sedimentary sequences
deep-sea fans
depositional lobes

Opis:

The Markov chains procedure was applied to the study on the sequences of lithofacies and depositional intervals in the Godula Beds (Turonian-Lower Senonian) of the Flysch Carpathians. The model (depositional) and modal (a most frequent in profile) diagrams were constructed and corresponding sequences were recognized. It was found that deposition from high-density turbidity currents of variable retardation rates was the dominating mechanism whereas the low-density turbidity currents were rather rare. The newly deposited sediments were commonly eroded by the succeeding, dense currents. Deposition processes were dominated by the two clearly separated environments: channels and depositional lobes. Their systems were subjected to frequent changes due to lateral migration caused by tectonic movements (uplift of cordilleras and subsidence of sea floor) and eustatic changes of sea level.

Źródło:

Annales Societatis Geologorum Poloniae; 2001, 71, No 1; 35-42
0208-9068

Pojawia się w:

Annales Societatis Geologorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 42.

Tytuł:

Facies types and depositional environments of a morphologically diverse carbonate platform : a case study from the Muschelkalk (Middle Triassic) of Upper Silesia, southern Poland

Autorzy:

Matysik, M.

Powiązania:

https://bibliotekanauki.pl/articles/191824.pdf

Data publikacji:

2016

Wydawca:

Polskie Towarzystwo Geologiczne

Tematy:

lithofacies assemblage
depositional sequence
sabkha-tidal flat-lagoon environment
shoreface-off- shore environment
Central Europe

Opis:

The detailed sedimentological study of the 150-m-thick Muschelkalk succession, deposited on a small (~200 by 80 km), morphologically diverse Upper Silesian carbonate platform during four major marine-transgressive pulses of the Tethys Ocean, enhanced the understanding of the depositional history, palaeogeography, and facies distribution. A total of thirty-five lithofacies types were identified, described and interpreted in terms of depositional settings. These different lithofacies represent various shallow-marine environments along the platform transect, from peritidal to offshore areas. The vertical and lateral organization of the lithofacies delineated was caused by the interplay of platform morphology, third-order eustasy and the long-term tectonic evolution of the area. Accordingly, the carbonate system studied is a good example of the influence of large-scale processes on the facies architecture of carbonate platforms. In general, all of the four Transgressive Systems Tracts are characterized by similarity in lithofacies composition and vertical succession and by minor lateral change, indicating only limited influence of the three large-scale factors mentioned on lithofacies development and distribution during transgressions. In contrast, each of the four associated Highstand Systems Tracts comprises an individual (unique) lithofacies assemblage displaying substantial regional and local variation, which indicates that the filling of accommodation space during highstands strongly depended on the extrinsic processes.

Źródło:

Annales Societatis Geologorum Poloniae; 2016, 86, 2; 119-164
0208-9068

Pojawia się w:

Annales Societatis Geologorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 43.

Tytuł:

The Middle Miocene of the Fore-Carpathian Basin (Poland, Ukraine and Moldova)

Autorzy:

Wysocka, A.
Radwański, A.
Górka, M.
Bąbel, M.
Radwańska, U.
Złotnik, M.

Powiązania:

https://bibliotekanauki.pl/articles/138689.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Lithofacies
fossil assemblages
Middle Miocene
Fore-Carpathian Basin
Polska
Ukraine
Litofacje
miocen
zbiornik przedkarpacki
Polska
Ukraina

Opis:

Studies of Miocene sediments in the Fore-Carpathian Basin, conducted by geologists from the University of Warsaw have provided new insights on the distribution of the facies infilling the basin, particularly in the forebulge and back-bulge zones. The origin of the large-scale sand bodies, evaporitic deposits and large-scale organic buildups is discussed, described and verified. These deposits originated in variable, shallow marine settings, differing in their water chemistry and the dynamics of sedimentary processes, and are unique with regard to the fossil assemblages they yield. Many years of taxonomic, biostratigraphic, palaeoecologic and ecotaphonomic investigations have resulted in the identification of the fossil assemblages of these sediments, their age, sedimentary settings and post-mortem conditions. Detailed studies were focused on corals, polychaetes, most classes of molluscs, crustaceans, echinoderms, and fishes.

Źródło:

Acta Geologica Polonica; 2016, 66, 3; 351-401
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 44.

Tytuł:

Sedimentation style of a Pleistocene kame terrace from the Western Sudety Mountains, S Poland

Autorzy:

Pisarska-Jamroży, Małgorzata
Machowiak, Katarzyna
Krzyszkowski, Dariusz

Powiązania:

https://bibliotekanauki.pl/articles/94225.pdf

Data publikacji:

2010

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

kame-terrace
confined braided rivers
lithofacies analysis
sediment-petrographical analysis
Pleistocene
Sudety Mountains
analiza litofacjalna
analiza osadowo-petrograficzna
plejstocen
Sudety

Opis:

The depositional conditions of kame terraces in a mountain valley were analysed sedimentologically and petrologically through a series of kame terraces in the Rudawy Janowickie mountains. The kame terraces comprise five lithofacies associations. Lithofacies association GRt, Sp originates from deposition in the high-energy, deep gravel-bed channel of a braided river. Lithofacies association GC represents a washed out glacial till. Probably a thin layer of till was washed out by sandy braided rivers (Sp). The fourth association (Fh, Fm) indicates a shallow and quite small glaciomarginal lake. The last association (GRt, GRp) indicates the return of deposition in a sandy-bed braided channel. The petrography of the Janowice Wiekie pit and measurements of cross-stratified beds indicate a palaeocurrent direction from N to S. The Janowice Wielkie sedimentary succession accumulated most probably during the Saalian (Odranian, Saale I, Drenthe) as the first phase of ice-sheet melting, because the kame terrace under study is the highest one, 25-27 m above the Bóbr river level. The deposits under study are dominated by local components. The proglacial streams flowed along the margin of the ice sheet and deposited the kame terrace. The majority of the sedimentary succession was deposited in a confined braided-river system in quite deep channels.

Źródło:

Geologos; 2010, 16, 2; 101-110
1426-8981
2080-6574

Pojawia się w:

Geologos

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 45.

Tytuł:

Cretaceous basin evolution in the Lublin area along the Teisseyre-Tornquist Zone (SE Poland)
Ewolucja basenu kredowego na obszarze lubelskim wzdłuż strefy Teisseyrea-Tornquista(SE Polska)

Autorzy:

Hakenberg, M.
Świdrowska, J.

Powiązania:

https://bibliotekanauki.pl/articles/191196.pdf

Data publikacji:

2001

Wydawca:

Polskie Towarzystwo Geologiczne

Tematy:

isopachs
lithofacies
subsidence
basin development
Cretaceous
Mid-Polish Trough
Teisseyre-Tornquist Zone

Opis:

The Cretaceous basin of the Lublin area belongs to the SE part of the Mid-Polish Trough and its NE border extending on the East European Craton. Our study is based on isopach maps of seven time intervals, from Neocomian to Early Maastrichtian. Several main lithofacies have been distinguished whose areal extents were plotted on thickness pattern maps. The isopach and lithofacies maps helped to delimit the basin depocenter, providing information on vertical motions of the basin basement and synsedimentary reactivation of older fault zones. The areal extents of the siliceous and chalk lithofacies have been shown to be controlled by the positions of discontinuity zones in the crystalline basement. Two stages of accelerated subsidence have been established: in Turonian and Early Maastrichtian times. Regional comparisons of accumulation rates and their accelerations during these time spans gave possibility to distinguish the roles of eustatic and tectonic factors in the process of augmenting the basin capacity. Some remarks concerning Early Maastrichtian timing of the inversion onset are also presented.

Źródło:

Annales Societatis Geologorum Poloniae; 2001, 71, No 1; 1-20
0208-9068

Pojawia się w:

Annales Societatis Geologorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 46.

Tytuł:

Wpływ zeszczelinowania na ropogazonośność mikroporowych piaskowców fliszowych
Influence of fracturing on oil- and gas-productivity of microporous flysch sandstones

Autorzy:

Machowski, G.
Kuśmierek, J.

Powiązania:

https://bibliotekanauki.pl/articles/183918.pdf

Data publikacji:

2008

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

Karpaty zewnętrzne
litofacje fliszowe
parametry petrofizyczne
makro i mikroszczelinowatość
prospekcja naftowa
Outer Carpathians
flysch lithofacies
petrophysical parameters
macro- and micro-fracturing
prospecting for petroleum deposits

Opis:

Obiektami badań wpływu zeszczelinowania ropogazonośnych litofacji fliszu karpackiego na ich przepuszczalność i porowatość były od kilkudziesięciu lat zarówno rdzenie wiertnicze, jak i wychodnie. Badania rdzeni wiertniczych serii złożowej warstw krośnieńsko-grybowskich pola ropno--gazowego Słopnice k. Limanowej, a szczególnie całego profilu głębokiego odwiertu badawczego Kuźmina-1, wykazały istotny wpływ zwięzłości badanych serii na wzrost intensywności ich zeszczelinowania. W ostatniej dekadzie badania szczelinowatości koncentrowały się głównie na piaskowcach krośnieńskich oligocenu i inoceramowych kredy-paleocenu w obszarze wschodniej części Karpat. Prowadzono je w obrębie pól pomiarowych zlokalizowanych na wychodniach ropogazonośnych fałdów. Analiza rozległego zbioru danych przetworzonych na uśrednione parametry zbiornikowe wykazała, że efektywna porowatość szczelinowa całej populacji makroszczelin jest niska i tylko w pojedynczych przypadkach przekracza 1%. Natomiast całkowita przepuszczalność szczelinowa waha się w szerokim zakresie od ułamków do setek milidarcy (mD). Znamienne jest, że wyniki laboratoryjnych badań próbek skał z badanych serii piaskowcowych dokumentowały na ogół ich znikomą przepuszczalność międzyziarnową (zwykle poniżej 0.1 mD), związaną z dominującym udziałem mikroporów.
For tens of years the influence of fracturing of oil- and gas-bearing Carpathian flysch lithofacies on their permeability and porosity has been studied on drill cores and in outcrops. The analyses of cores from the reservoir series of the Krosno-Grybów Beds in the Słopnice near Limanowa oil and gas field, and particularly of the whole section of the Kuźmina-1 deep well, have proved strong influence of solidity of the studied series on their fracturing intensity. During the last decade the fracturing studies have been focused on the Oligocene Krosno Sandstones and Cretaceous-Paleocene Inoceramian Sandstones in the Eastern Polish Carpathians. The investigations have been carried out in measurement fields located within outcrops of oil- and gas-bearing folds. Analysis of a large set of data processed into averaged reservoir parameters has proved that the effective fracture porosity for the whole population of macrofractures is low and only rarely exceeds 1%. Total fracture permeability varies widely, from fractions of millidarcy to several hundred millidarcy (mD). It is characteristic that results of laboratory measurements of rock samples from the studied sandstone series have documented, in general, their insignificant intergranular permeability (usually less than 0.1 mD), related to predominant contribution of micropores.

Źródło:

Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie; 2008, 34, 3; 385-403
0138-0974

Pojawia się w:

Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 47.

Tytuł:

Genetic sequence stratigraphy on the basis of ichnology for the Middle Jurassic basin margin succession of Chorar Island (eastern Kachchh Basin, western India)

Autorzy:

Darngawn, Jehova L.
Patel, Satish J.
Joseph, Jaquilin K.
Shitole, Apuva D.

Powiązania:

https://bibliotekanauki.pl/articles/94570.pdf

Data publikacji:

2019

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

Synrift basin
Bajocian–Callovian
lithofacies
ichnofacies
base level
Bajos
Kelowej
litofacje
ichnofacje
poziom podstawowy

Opis:

Synrift basin margin successions are greatly influenced by eustatic sea level changes, tectonics and accommodation space filled in by sediments. The Middle Jurassic (Bajocian–Callovian) of Chorar Island (western India) comprises a ~109-m-thick synrift basin margin succession of clastic, non-clastic and mixed siliciclastic-carbonate rocks which are here analysed and categorised into nine lithofacies. The succession is bioturbated to varying intensities; 16 identified ichnogenera can be assigned to environmentally related groups of five trace fossil assemblages, which include Gyrochorte, Hillichnus, Rhizocorallium, Skolithos and Thalassinoides. These ichnoassemblages document the Skolithos and Cruziana Ichnofacies which marks a change in energy conditions, sedimentation dispersal patterns and bathymetry in a shallow-marine environment. The Bajocian–Callovian succession is further analysed on the basis of sedimentological and ichnological data that show two genetic sequences consisting of Transgressive Systems Tract and Highstand Systems Tract bounded by Maximum Flooding Surface. The synrift basin margin succession of the Middle Jurassic of Chorar Island shows cyclicity in deposition; the Bajocian–Bathonian succession represents progradational to retrogradational coastlines, while the Callovian succession documents an aggrading progradational coastline.

Źródło:

Geologos; 2019, 25, 1; 31-41
1426-8981
2080-6574

Pojawia się w:

Geologos

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 48.

Tytuł:

Model litofacjalny stożka ujściowego Wisły jako zapis interakcji środowiska lądowego i morskiego
Lithofacies model of the Vistula river-mouth fan as a record of the interaction of marine and terrestial environments

Autorzy:

Koszka-Maroń, D.

Powiązania:

https://bibliotekanauki.pl/articles/2075489.pdf

Data publikacji:

2016

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Wisła
czoło delty
prodelta
model facjalny
morfodynamika
Vistula river
delta front
facial model
morphodynamics

Opis:

The study area (20 km2) covers part of the Vistula River's delta front and prodelta, active since 1895. The Vistula river-mouth fan is a unique area of intense accumulation of clastic material, whose development can be investigated from a precisely defined moment in the history of its origin to the present day. The research has resulted in a morphodynamic model (based on bathymetric plans of the contemporary Vistula mouth area over the period of 1894–2000) and a facies model of the Vistula mouth fan. The analysis of the morphometric models shows that 105 years after the Vistula Cross-Cut was opened, the volume of the sediment accumulated in the fan was 133.39 million m3 and the rate of accretion has decreased. Facial models were created on the basis of results of lithological analysis of sediments. The Vistula mouth fan is built of delta front sediments represented mainly by sand facies (fine-, medium- and coarse-grained, locally with gravel, as well as marine and freshwater mollusc shells), only locally by silt facies. The thickness of the river-mouth fan sands is 11–15 m. The prodelta sediments are found on the fan's forefield within a depth zone of 12–16 m, and they also underlie the fan sediment. Their thickness is up to ca. 10 m. Cluster analysis of the individual grain-size distributions made it possible to distinguish two lithofacies in the Vistula mouth fan: lithofacies A (fine-grained sand, silty sands, clayey silt) and lithofacies B (medium-grained and coarse-grained sand). This allowed reconstructing the processes which has taken place over the last 100 years, and to forecast future changes in the development of the active part of the Vistula Delta.

Źródło:

Przegląd Geologiczny; 2016, 64, 5; 315--327
0033-2151

Pojawia się w:

Przegląd Geologiczny

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 49.

Tytuł:

Uwarunkowania stratygraficzno-środowiskowe występowania nagromadzeń złożowych bursztynu na północnej Lubelszczyźnie
Stratigraphic and environmental conditions of the occurrence of amber-bearing deposits in the northern Lublin region

Autorzy:

Słodkowska, Barbara
Kasiński, Jacek Robert
Żarski, Marcin

Powiązania:

https://bibliotekanauki.pl/articles/20029346.pdf

Data publikacji:

2022

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

asocjacja bursztynonośna
litofacje
środowisko
eocen
północna Lubelszczyzna
amber-bearing association
lithofacies
environment
Eocene
northern Lublin region

Opis:

In the northern Lublin region, the Eocene amber-bearing association has been recognized. It is a group of clastic deposits in which amber crumbs are scattered, and the characteristic feature of the association is the content of glauconite. The sedimentological and lithofacies studies allowed determining the conditions necessary for amber deposition. Accumulation of amber-bearing sediments took place in the Middle and Late Eocene. The Upper Eocene formations in this area occur in isolated patches. Amber accumulations are found in marine sediments associated with regressive facies, usually in depressions of the Cretaceous basement. Understanding the correct distribution of amber in the sediment and determining the dynamics of the Eocene sedimentary basin in the Lublin region have a practical aspect, and are the basis for developing the characteristics of the geological economic conditions for the occurrence of amber-bearing deposits. The recently drilled boreholes confirmed amber resource prospectivity in the Lubartów area and the recognition of new deposits with amber reserves.

Źródło:

Przegląd Geologiczny; 2022, 70, 1; 50-60
0033-2151

Pojawia się w:

Przegląd Geologiczny

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 50.

Tytuł:

The usefulness of ground-penetrating radar images for the research of a large sand-bed braided river: case study from the Vistula River (central Poland)

Autorzy:

Lejzerowicz, A.
Kowalczyk, S.
Wysocka, A.

Powiązania:

https://bibliotekanauki.pl/articles/94393.pdf

Data publikacji:

2014

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

sedimentary architecture
sand-bed braided river
lithofacies
ground-penetrating radar
radar facies
Vistula River
architektura sedymentacyjna
piaskodenna rzeka roztokowa
litofacje
georadar
Wisła

Opis:

Ground-penetrating radar (GPR) surveys and sedimentological outcrop analyses were combined in order to determine the reflection patterns and internal architecture of terrace deposits of the Vistula River at Kępa Zawadowska in the southern part of Warsaw (central Poland). The sedimentary analyses concerned the granulometric composition and lithofacies analysis. The 34 GPR profiles, which were obtained in two outcrops, using a Malå RAMAC/GPR system with 500-MHz and 250-MHz shielded antennas, were up to 100 m long. The most characteristic ground-penetrating radar profiles are presented; they show a high-resolution data set of radar facies. The GPR data suggest the presence of three geophysically different units, namely with high-angle inclined reflections (radar facies 1), with discontinuous undulating or trough-shaped reflections (radar facies 2), and with low-angle reflections (radar facies 3). The internal structure of the fluvial deposits was obtained by integration of the GPR and sedimentological data, which combination provides a more accurate visualisation of sedimentary units than do reconstructions that are based only on standard lithologic point data.

Źródło:

Geologos; 2014, 20, 1; 35-47
1426-8981
2080-6574

Pojawia się w:

Geologos

Dostawca treści:

Biblioteka Nauki

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