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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
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
Tytuł:
Zastosowanie metody statycznego sondowania w analizie genezy osadów, na przykładzie sandru Gwdy
Application of static cone penetration method in the analysis of sediments Genesis : the example of the Gwda proglacial outwash plain
Autorzy:
Paluszkiewicz, R.
Wierzbicki, J.
Powiązania:
https://bibliotekanauki.pl/articles/295078.pdf
Data publikacji:
2010
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
sondowanie statyczne (CPTU)
wskaźnik przekonsolidowania (OCR)
stratygrafia
procesy postgenetyczne
static cone penetration method
overconsolidation ratio
stratigraphic gaps
sedienthology
lithofacies
proglacial outwash plain
Opis:
Przekonsolidowania serii piaszczysto-żwirowych sandru Gwdy-Piławy. Analiza statystyczna wyników prac umożliwiła podział serii glacifluwialnych na trzy grupy, a co za tym idzie umożliwiłą wyznaczenie trzech etapów depozycji serii sandrowych.
The paper presents the new possibilities of use the CPTU (Static Cone Pentration Test) results for the purpose of the stratygraphic analysis. On the basis of the CPTU results the overconsolidation ratio (OCR) has been computed along profile of investigated glaciofluvial deposits of Gwda-Pilawa outwash plain. The statistical analysis of the results allowed to divide the over 15 m of glaciofluvial series into 3 parts, which represent different stages of the outwash plain existence.
Źródło:
Landform Analysis; 2010, 13; 83-89
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
Tytuł:
Jakie cechy litologiczne osadów warto kodować, a jakie nie?
Which features of deposits should be included in a code and which not?
Autorzy:
Zieliński, T.
Pisarska-Jamroży, M.
Powiązania:
https://bibliotekanauki.pl/articles/2074953.pdf
Data publikacji:
2012
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
kod litofacji
kod litogenetyczny
struktura
tekstura
analiza sedymentologiczna
klastyczne skały
elementy architektoniczne
lithofacies code
lithogenetic code
structure
texture
sedimentological analysis
clastic rocks
architectural elements
Opis:
Since the classical publications on lithofacies and architectural element codes (Miall, 1977, 1985), sedimentologists have made several attempts to optimize those codes. The authors present and discuss the codes of lithology and the origin of clastic rocks which have been proposed in the last thirty five years. It appears that the codes hitherto proposed are unsatisfactory because they fail to reflect several important features of deposits. It is postulated that most of Miall’s original rules should be used as a starting point but some additional rules should also be followed: (1) lithofacies symbols should not be used to describe interpretations but lithologic features only; (2) code of texture should contain two capital letters at the most; (3) structure should be described by three lower-case letters at the most; (4) genetic code should indicate depositional process or parent depositional form by capital letters; (5) coding is best applicable in practice if both the lithofacies and genetic codes are used jointly. The present authors propose a modified combination of lithofacies and lithogenetic symbols, shown to make sedimentological analyses more effective and unambigous.
Źródło:
Przegląd Geologiczny; 2012, 60, 7; 387-397
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
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