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Tytuł:
Middle Pleistocene fluvial, lacustrine and glaciolacustrine sediments of the Czyżów and Kuców Formations (Kuców 9, 10 and 16 sections), Bełchatów outcrop, central Poland – the problem of stratigraphical interpretation
Autorzy:
Krzyszkowski, Dariusz
Wachecka-Kotkowska, Lucyna
Nita, Małgorzata
Wieczorek, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/2025048.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lake deposits
fluvial deposits
oxbow
Mazovian
Ferdynandovian
Kleszczów Graben
central Poland
Opis:
The article presents results of research of three sections (Kuców 9, 10 and 16). Two of them record fluvial and lacustrine interglacial sediments and the third, cold-stage glaciolacustrine sediments. They were formed inside the Miocene – Pliocene syncline depressions in a central part of the southern horst within the Kleszczów Graben. Fluvial and lacustrine deposits of the Middle Pleistocene Interglacial (Mazovian or Ferdynandovian in the Czyżów Formation) are described from the Kuców 9 and 10 sections. Their sediments are located in marginal parts of a buried river valley and within an oxbow palaeolake, then covered by glaciofluvial deposits of the Ławki (Early Saalian) and Rogowiec (Late Saalian) Formations. The Kuców 16 section comprises ice-dam sandy lithofacies (Kuców Formation, Elsterian) of a marginal part in a proglacial lake. Two pollen diagrams of K65/15 and Kuców 9 sections represent the Mazovian (Holsteinian) succession, although in the Kuców 9 section some features are typical for the Ferdinandovian succession.
Źródło:
Studia Quaternaria; 2021, 38, 1; 53-66
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Miocene anastomosing river system in the area of Konin Lignite Mine, central Poland
Autorzy:
Widera, M.
Kowalska, E.
Fortuna, M.
Powiązania:
https://bibliotekanauki.pl/articles/191379.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
sedimentology
fluvial deposits
palaeochannel pattern
anastomosing river
sand-filled channels
Opis:
This sedimentological study of the Wielkopolska Member of the Miocene Poznań Formation in the Jóźwin IIB opencast lignite-mining field, central Poland, reveals a late mid-Miocene anastomosing fluvial system with ribbon-shaped channels filled mainly by sandy and muddy deposits. The fluvial system, extending across the eastern flank of the post-Mesozoic Kleczew Graben, was tributive in its eastern upper reaches, but was increasingly distributive and northwards deflected in its lower reaches near the graben axis. Lithofacies analysis of a representative palaeochannel indicates that the river discharge significantly fluctuated and that the channels were filled with mud-bearing stratified fine-grained sand by low-density tractional turbulent flow during the high and low water stages and with a massive mud or sandy mud by a high-density flow during the rising and falling stages. The spatial pattern of fluvial channels and deformation channel-fill sandbodies were controlled by the graben topography and the differential compaction of peat substrate, with possible influence of bedrock faults. The fluvial system is thought to have drained to an endorheic ‘terminal’ basin to the north, rather than into the hypothetical Baltic River and further westwards to the distant North Sea basin, as postulated by some previous authors. The present case study contributes to the known spectrum of anastomosing river systems as a sand- to mud-dominated end-member.
Źródło:
Annales Societatis Geologorum Poloniae; 2017, 87, 2; 157-168
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chronostratigraphy and changes of environment of Late Pleistocene and Holocene at Starunia palaeontological site and vicinity (Carpathian region, Ukraine)
Autorzy:
Sokołowski, T.
Stachowicz-Rybka, R.
Powiązania:
https://bibliotekanauki.pl/articles/191571.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Late Pleistocene
Holocene
fluvial deposits
environment
Starunia
Carpathian region
Ukraine
Opis:
This paper presents the results of absolute dating and biostratigraphical analysis carried out for alluvial sediments of an abandoned Starunia ozokerite mine located in the Velyky Lukavets River valley, in which large mammal remains were discovered in the first half of the 20th century. The sediments build up three terrace levels. The highest one, up to 8 m high (terrace II), is likely to be associated with a stage of aggradation, as well as with a short episode of valley broadening, which occurred in the Weichselian Late Pleniglacial. The lower one, 4 m high (terrace I), is most likely to be linked with the Holocene, despite a considerable transformation of its top due to mining activity. The lower part of this terrace cover bears coarse-grained channel sediments dated to 120.6-58.9 ka BP (Eemian Interglacial?-Early Pleniglacial - OIS 5e, 4 and 3), and overbank (distal floodplain) mud with intercalations of biogenic deposits (peat, peat mud and biogenic mud). The overbank deposits are dated to 48.2-11.11 ka BP (Glinde Interstadial?-Younger Dryas, OIS 3-2) and are overlain by Holocene (OIS 1) mud and biogenic deposits. In boreholes drilled in the vicinity of the present-day river channel, younger sediments occur more frequently. These include sediments originating from the Late Weichselian overlain by Holocene sediments. However, sediments originating exclusively from the Holocene are infrequent. The deposition of sediments took place in specific conditions of a permanent saturation of the environment with brine, petroleum and thickened bitumen. In the longest period of deposition (48.2-1.27 ka BP), ephemeral swamps, ponds and lakes were developed in different parts of the floodplain. They were marked by the presence of: Juncus glaucus/effusus, J. articulatus, Typha sp., Batrachium sp., Potamogeton filliformis, Bidens tripartita, Ranunculus sceleratus and Phragmites communis, as well as by halophytic species, like: Zannichellia palustris, Triglochin maritimum, Schoenoplectus tabernemontani, Puccinelia distans and Eleocharis palustris. Rhythmic oscillations between cold and warm climatic conditions, typical of the Weichselian age and well identified in Western Europe, are here marked by the changes of plant communities (woody assemblages passing into steppe and tundra), but are not noticeably recorded in the sediments of the Velyky Lukavets River. This shows that the greatest part of the discussed period involved the formation of poorly differentiated silty overbank sediments with intercalations of biogenic sediments. However, the variability of sediments provides evidence for extreme events which occurred in the Holocene.
Źródło:
Annales Societatis Geologorum Poloniae; 2009, 79, No 3; 315-331
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Malacological indicators of anthropogenic and natural environmental changes of the Podhale Basin during the last 2000 years. Studies in the Rogoźnik Stream valley (the Carpathian Mountains, Southern Poland)
Autorzy:
Alexandrowicz, Witold Paweł
Skoczylas-Śniaz, Sylwia
Laskowska, Paulina
Powiązania:
https://bibliotekanauki.pl/articles/27310137.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
fluvial deposits
molluscs
environmental changes
human impact
Podhale Basin
Southern Poland
Opis:
The lithological and malacological studies covered sediments forming the low terrace of the Rogoźnik Stream in the northwest part of the Podhale Basin. This terrace is characterised by a uniform structure within a significant part of the valley. Three layers of gravel and four layers of sandy and silty muds were found there. A rich and diversified malacofauna was discovered in fine-grained sediments. Its analysis allowed us to characterise environmental conditions during sediment deposition. The age of the individual components of the sedimentary sequence was determined by radiocarbon dating. A distinct change was found in the upper intervals of the sequence, corresponding to the warm phase of the Medieval Climate Optimum. This period is associated with the robust development of agriculture, and processes related to human activities became the main factor shaping the environment, influencing the course of geological processes, and changing the taxonomical and ecological structure of the fauna and flora assemblages found in this area.
Źródło:
Geology, Geophysics and Environment; 2023, 49, 3; 261--280
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przydatność profilowań georadarowych w interpretacji budowy tarasów rzecznych (dolina Kamienicy, polskie Karpaty zewnętrzne)
Usefulness of GPR measurements in interpretation of structures of river terraces (Kamienica River Valley, Polish Outer Carpathians)
Autorzy:
Olszak, J.
Karczewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/2074621.pdf
Data publikacji:
2008
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
osady rzeczne
GPR
polskie Karpaty zewnętrzne
fluvial deposits
Polish Outer Carpathians
Opis:
Studies on river terrace deposits using ground penetrating radar (GPR) were conducted on several river terraces in the Kamienica river valley, Polish Outer Carpathians. All GPR profiles were collected using RAMAC/GPR system with 50 and 200 MHz antennae. The study has been based on 10 GPR profiles from 40 m to 200 m in length from which two as the most characteristic are presented in the paper. Terrace sediments consist mainly of gravels with subordinate sand. A peat layer has been found in one profile. These deposits lie on strath terraces built up with flysch sandstones and shales. Most of the profiles show reflections suggesting that the deposits are composed of multichannel river deposits. Some features of the profiles also indicate the presence of strath terraces and a peat layer. Even though lithology and texture of the investigated sediments are not very diverse, GPR measurements are quite useful in a few aspects of terraces’ structure interpretation.
Źródło:
Przegląd Geologiczny; 2008, 56, 4; 330-334
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fluvial response to environmental changes during MIS 4-3: a sedimentary record at the Brześnica site, central-western Poland
Autorzy:
Moskalewicz, Damian
Tylmann, Karol
Woźniak, Piotr Paweł
Kopyść, Natalia
Moska, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2060131.pdf
Data publikacji:
2020
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
braided river
fluvial deposits
OSL dating
MIS 4
MIS 3
Last Glacial Maximum
Opis:
Fluvial deposits subjected to this study are exposed at the Brześnica site, in the south-western part of the Wielkopolska region in Poland, which was close to the ice-sheet limit during the Last Glacial Maximum (LGM). Sedimentological analyses, including lithofacies descriptions, palaeocurrent measurements, grain size and rounding analyses and heavy mineral compositions indicate that the fluvial deposits at Brześnica were deposited in braided river environment. The following fluvial sedimentary processes were inferred: (1) shallow, rapid flow alternating with waning flow, (2) infilling of erosional channels with fluvial sediments during flood events, (3) changes from supercritical to subcritical flows, and (4) shallow sheet floods. The results of OSL dating indicated sediment deposition ~65.2 ±1.5 ka, i.e. in MIS 4, that was here characterized by cold environmental conditions and a general shift from meandering to braided fluvial sedimentation style. This finding contrasts with accumulation/erosion phases interpreted previously in this region for that time interval; however, it is consistent with recent studies of fluvial systems functioning during MIS 5-2 and of factors responsible for sedimentation style.
Źródło:
Geological Quarterly; 2020, 64, 4; 915--930
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new Triassic-Jurassic section in the southern part of the Holy Cross Mts. (Poland) implications for palaeogeography
Autorzy:
Kozłowska, M.
Barski, M.
Mieszkowski, R.
Antoszewska, A.
Powiązania:
https://bibliotekanauki.pl/articles/2059877.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
sedimentology
fluvial deposits
shallow marine deposits
Middle Jurassic transgression
dinoflagellate cysts
stratigraphy
electrical resistivity tomography
ERT
Opis:
Sedimentological, stratigraphical and geophysical studies across a new Triassic-Jurassic transition section in the Holy Cross Mts., Poland have revealed a large sedimentary hiatus embracing the entire latest Triassic–Early Jurassic – earliest Middle Jurassic time interval and yielded new data on the Triassic fluvial system and on Middle Jurassic shallow marine sedimentation. The presence of organic-walled dinoflagellate cysts allowed a precise age assignment of the black clay facies. Regional discussions and comparisons may be made with other areas with a similar depositional environment in Poland. For the first time a counterpart of the “Kościeliskie Beds” lithostratigraphic unit is proposed to exist in the Holy Cross Mts. area.
Źródło:
Geological Quarterly; 2016, 60, 2; 365--484
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prospects and limitations of heavy mineral analyses to discriminate preglacial/glacial transitions in Pleistocene sedimentary successions
Autorzy:
Zieliński, T.
Powiązania:
https://bibliotekanauki.pl/articles/94637.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
river network
fluvial deposits
stratigraphy
Early Pleistocene
Polska
sieć rzeczna
osady fluwialne
stratygrafia
plejstocen
Polska
Opis:
The present study revolves around the identification of the stratigraphical boundary between Pleistocene formations that formed prior to the first advance of the Scandinavian ice sheet (Early Pleistocene, i.e., the so-called preglacial) and the overlying, glacially derived deposits (Middle Pleistocene). In particular, it focuses on variation in heavy mineral assemblages, which are an important tool for stratigraphers. The Neogene basement, described here, was most often the source of material that was redeposited by Early Pleistocene rivers. The geological structure and Early Pleistocene palaeogeographical scenarios for various Polish regions are discussed. Moreover, comparisons with other European preglacial formations are carried out. The mineral spectrum of Lower Pleistocene deposits is largely dependent of rocks of the Neogene and Mesozoic basement. If the incision of ancient catchments was into terrigenous rocks, the stratigraphical boundary between preglacial and glacial formations is easily determined with the help of a heavy mineral analysis. As a rule, this coincides with a noticeable change from resistant to non-resistant mineral associations. Such cases are noted for successions in central Poland and eastern England. On the other hand, outcrops of igneous or metamorphic rocks exist within preglacial river catchments in most parts of Europe. They were the local sources of non-resistant heavy minerals long before their glacial supply from the Baltic Shield. In these cases, mineralogical analysis fails in the search for the Early/Middle Pleistocene transition.
Źródło:
Geologos; 2018, 24, 2; 151-162
1426-8981
2080-6574
Pojawia się w:
Geologos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Subsurface imaging of fluvial deposits of the Wisła River valley in Kraków (southern Poland) by 2D ERT survey
Autorzy:
Bania, Grzegorz
Woźniak, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/2201218.pdf
Data publikacji:
2022
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
electrical resistivity tomography
ERT
gradients of interpreted resistivity
2D ERT modeling
fluvial deposits
Wisła River valley
southern Poland
Opis:
We describe the application of 2D ERT (electrical resistivity tomography) surveys to investigate the spatial complexity of fluvial deposits of the Wisła River valley in the eastern part of Kraków (southern Poland). All ERT survey lines were completed within the industrially influenced floodplain of the Wisła River at two research sites. Due to the transformation of the natural state of the environment through many years of industrial activity of the ArcelorMittal Kraków plant, some of the geomorphological elements analysed have been irretrievably transformed and hidden by anthropogenic accumulations such as waste landfills and engineering structures. Hence, many years of soil contamination have changed the primary resistivity characteristics of the subsurface. For this purpose, the measurement array applied combines standard arrays, i.e., Wenner-Schlumberger and Dipole-Dipole, which gave improved results (higher resolution) in comparison to the standard single array. The data interpretation method was supported by the calculation and visualization of the vertical and horizontal gradients of the interpreted resistivity within the resistivity sections. This approach allowed accurate determination of resistivity boundaries on the ERT resistivity sections and thus helped lithological interpretation of the fluvial deposits in the research area. The resistivity of water in a channel located within one of the analysed areas has impacted some of the research results. Furthermore, 2D ERT forward modeling was implemented to generate synthetic datasets. The synthetic data allowed investigation of the influence of groundwater contamination on the resistivity distribution within superficial layers, and also tested the ability of the 2D ERT model to recognize the detailed spatial distribution of palaeomeander (meander scar) infills. All methods have provided new information on the industrially influenced floodplain of the Wisła River in Kraków.
Źródło:
Geological Quarterly; 2022, 66, 3; art. no. 23
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Paleośrodowisko sedymentacji osadów międzymorenowych z profili Sucha Wieś (Pojezierze Ełckie) i Czarnucha (Równina Augustowska), północno-wschodnia Polska
Sedimentary palaeoenvironment of intermoraine deposits from Sucha Wieś (Ełk Lakeland) and Czarnucha (Augustów Plain), northeastern Poland
Autorzy:
Lisicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/2063336.pdf
Data publikacji:
2009
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
badania chemiczne
badania litologiczne
osady jeziorne
osady rzeczne
Pojezierze Ełckie
Równina Augustowska
chemical studies
lithological investigations
lacustrine deposits
fluvial deposits
Ełk Lakeland
Augustów Plain
Opis:
Praca została wykonana na podstawie badań chemicznych i badań litologicznych osadów z profili Sucha Wieś i Czarnucha. Oba profile są bardzo zbliżone do siebie pod względem litologii i zmian środowiska depozycji osadów. Cykl zmian sedymentacji jest zapisany od osadów klimatu borealnego do osadów jeziornych klimatu ciepłego oraz ponownie do osadów rzecznych i jeziornych klimatu borealnego.
The work deals with chemical analyses and lithological studies of deposits from the Sucha Wieś and Czarnucha sections. Both these sections show much similarity in terms of lithologies and changes in sedimentary environments. The sedimentary record reveals a cycle of changes from a boreal climate to a temperate climate represented by lacustrine sediments and again towards a boreal climate with fluvial and lacustrine deposition.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2009, 435; 47--56
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy-mineral assemblages from fluvial Pleniglacial deposits of the Piotrków Plateau and the Holy Cross Mountains - a comparative study
Autorzy:
Wachecka-Kotkowska, Lucyna
Ludwikowska-Kędzia, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/94384.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
heavy mineral analysis
fluvial deposits
Vistulian
Pleniglacial
central Poland
Holy Cross Mountains
Piotrków Plateau
analiza ciężkich minerałów
osady rzeczne
Wisła
środkowa Polska
Góry Świętokrzyskie
Opis:
The heavy-mineral assemblages of Pleniglacial fluvial sediments were analysed for two river valleys, viz. the Luciąża River (at Kłudzice Nowe) and the Belnianka River (at Słopiec). These sites, on the Piotrków Plateau and in the Holy Cross Mountains respectively, are located in different morphogenetic zones of Poland that were affected to different degrees by the Middle Polish ice sheets. The study was aimed at determining the kind of processes that modified the heavy-mineral assemblages in the two fluvial sediments, at reconstructing the conditions under which these processes took place, and in how far these processes caused changes in the assemblages. The heavy-mineral associations of the parent material was taken as a starting point; this parent material were the sediments left by the Odranian glaciation (Warta stadial = Late Saalian). It was found that heavy-mineral assemblages in the Luciąża valley deposits are varied, particularly if compared with other fluvioglacial Quaternary deposits from the Polish lowlands, with a dominance of garnet. In the fluvial deposits of the Belnianka valley, zircon, staurolite and tourmaline dominate, with minor amounts of amphibole, pyroxene, biotite and garnet. This suggests that the deposits were subject to intensive and/or persistent chemical weathering and underwent several sedimentation/erosion cycles under periglacial conditions. In both valleys chemical weathering and aeolian processes were the main factors that modified the assemblages of the transparent heavy minerals; these processes were largely controlled by the climatic changes during the Pleistocene.
Źródło:
Geologos; 2013, 19, No. 1-2; 131-146
1426-8981
2080-6574
Pojawia się w:
Geologos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Litologia i sytuacja geologiczna osadów interglacjału augustowskiego z profili Sucha Wieś (Pojezierze Ełckie) i Czarnucha (Równina Augustowska)
Lithology and geological position of the Augustovian Interglacial deposits from Sucha Wieś (Ełk Lakeland) and Czarnucha (Augustów Plain)
Autorzy:
Ber, A.
Powiązania:
https://bibliotekanauki.pl/articles/2063331.pdf
Data publikacji:
2009
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
interglacjalne osady jeziorne i rzeczne
interglacjał augustowski
stratygrafia
Pojezierze Ełckie
Równina Augustowska
interglacial lacustrine and fluvial deposits
Augustovian Interglacial
stratigraphy
Ełk Lakeland
Augustów Plain
Opis:
W odwierconych w latach 1988-1989 profilach otworów badawczych Sucha Wieś i Czarnucha, w spągowych partiach miąższych osadów plejstoceńskich (Sucha Wieś — 185 m; Czarnucha — 142 m) różnego wieku i genezy, napotkano jeziorne (organiczne) i rzeczne (mineralne) osady interglacjalne (Sucha Wieś — 31,1 m; Czarnucha— 32,1 m). Na podstawie analiz palinologicznych tych osadów oraz datowań paleomagnetycznych określono ich wiek na interglacjał augustowski. Przedstawiono również szczegółową charakterystykę litologiczną i petrograficzną osadów występujących w obu profilach, a także opisano litologię i sedymentologię interglacjalnych osadów jeziornych i rzecznych. W jeziornych i rzecznych osadach interglacjalnych, dla obu profili, wyróżniono odrębne litologicznie sekwencje osadów; dla profilu Sucha Wieś — 7, a dla profilu Czarnucha— 5 sekwencji. Wykształcenie osadów w profilu Sucha Wieś świadczy o tym, że w okresie całego plejstocenu panowały tu podobne warunki sedymentacji. Osady w tym profilu nie wykazują śladów zaburzeń glacitektonicznych. Natomiast w profilu Czarnucha osady były zaburzone glacitektonicznie przez każdy kolejny lądolód. Sytuację geologiczną i stratygrafię osadów plejstoceńskich, występujących w profilach Sucha Wieś i Czarnucha, przedstawiono w nawiązaniu do profili z różnowiekowymi osadami interglacjalnymi, położonymi w obrębie Równiny Augustowskiej i w południowo-wschodniej części Pojezierza Ełckiego.
In the Sucha Wieś and Czarnucha boreholes drilled in 1988-1989, interglacial lacustrine and fluvial organic and mineral deposits (Sucha Wieś — 31.1 m; Czarnucha— 32.1 m in thickness) were encountered in the basal portion of the thick Pleistocene series (Sucha Wieś-185 m; Czarnucha-142 m) of various ages and origin. Palynological analyses and palaeomagnetic datings indicate that these deposits are of Augustovian Interglacial age. The present report shows the location and detailed lithological and petrographical description of these sections. Lithological and sedimentological characteristics of interglacial lacustrine and fluvial deposits are given separately. Seven different lithological sequences have been identified within the sequence of interglacial lacustrine and fluvial deposits of the Sucha Wieś section. In the Czarnucha section — 5 such sequences have been found. The lithology of the Sucha Wieś section confirmed that sedimentary conditions were invariable during the whole period. Additionally, the sediments show no glaciotectonic deformation. However, the Czarnucha deposits were glaciotectonically disturbed by each successive ice sheet. The final chapter provides an overview of the geological position and stratigraphy of the Pleistocene deposits from the Sucha Wieś and Czarnucha sections with reference to other sections from the Augustów Plain and southeastern part of the Ełk Lakeland.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2009, 435; 3--21
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Origin and age of Pleistocene ‘mixed gravels’ in the northern foreland of the Carpathians
Autorzy:
Lindner, L.
Marks, L.
Powiązania:
https://bibliotekanauki.pl/articles/191359.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
fluvial interglacial deposits
Carpathian and Scandinavian erratics
Early-Middle Pleistocene
northern fore land of Carpathians
Ukraine
Polska
Opis:
Accumulations of pebbles in the northern foreland of the Carpathians in Ukraine and Poland, composed mostly of Carpathian sandstones, but with a small admixture of Scandinavian rocks, have been known for many years as the ‘mixed gravels’. The occurrence of these gravels in the San–Dnistr and Vistula–Odra interfluves proves that they are of fluvial origin and were deposited by rivers that flowed northwards during the Podlasian (Martonosha and Shirokino) and Ferdynandovian (Lubny) Interglacials. The Scandinavian material was derived from eroded glacial deposits of Nidanian (Turskian) and Sanian 1 (Vyzhivskian, equivalent to Donian) Glaciations.
Źródło:
Annales Societatis Geologorum Poloniae; 2013, 83, 1; 29-36
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conditions of accumulation and sedimentary architecture of the upper Westphalian Cracow Sandstone Series (Upper Silesia Coal Basin, Poland)
Warunki akumulacji i architektura krakowskiej serii piaskowcowej górnośląskiego zagłębia węglowego
Autorzy:
Doktor, M.
Powiązania:
https://bibliotekanauki.pl/articles/191702.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
braided fluvial system
fluvial architecture
coal-bearing deposits
Carboniferous
Upper Silesia
Polska
Opis:
The Cracow Sandstone Series (upper Westphalian) forms the uppermost segment of the coal-bearing succession that makes up the bulk of the Variscan foredeep-basin fill in the Upper Silesia Coal Basin. The series, up to 1640 m in stratigraphic thickness, consists entirely of non-marine deposits. Fiveteen lithofacies have been distinguished in the sediments of this series. The Cracow Sandstone Series is subdivided here in two lithofacies associations. The sandstone association consists mainly of medium- to coarse-grained sandstones that form packages up to several tens of metres thick (max. 140 m), with surfaces of erosion at base. These bodies are separated by less voluminous packages of the mudstone association that consists mainly of mudstones and coal seams, which locally make up the predominant part in the sequences of this association. The sediments of the sandstone association are believed to have originated within wide channel tracts of distal sandy braided rivers. The sediments of the mudstone association with the interbedded coal seams are interpreted as floodplain deposits. The predominant type of peat bogs, represented now in the coals of the Cracow Sandstone Series, were wet forest swamps. The peat bogs were probably slightly domed and their margins received clastic material from adjacent channels. This resulted in the frequent lateral splitting of the coal seams. The large-scale splitting of seams is associated with lateral transition of fine-grained floodplain deposits into coarse-grained channel deposits. The vertical alternation of the channel and floodplain deposits is the result of natural processes on an alluvial plain that resulted in shifting positions of depositional environments, first of all avulsion of the whole fluvial tracts. The coal seams in the Cracow Sandstone Series do not form extensive sheets of persistent thickness, and their geometry depends on the course and evolution of the network of fluvial tracts in the alluvial system. The internal geometry of the Cracow Sandstone Series was controlled to a large extent by differential compaction of sediments, notably by rapid compaction of peat.
Krakowska seria piaskowcowa stanowi najwyższą część sukcesji węglonooenej Górnośląskiego Zagłębia Węglowego wypełniającej waryscyjskie, fleksuralne zapadlisko przedgórskie. Seria osiąga 1640 m miąższości stratygraficznej i zbudowana jest wyłącznie z osadów lądowych. W osadach tej serii wyróżniono 15 litofacji oraz dwie, wyraźnie różniące się asocjacje facjalne, określone jako piaskowcowa i mułowcowa. Osady pierwszej z tych asocjacji, złożonej w przewadze z piaskowców średnioziarnistych, dominują w całej serii i z reguły tworzą grube ciała (litosomy),dochodzące nawet do 140 m miąższooeci. Litosomy te rozdzielone są cieńszymi pakietami osadów asocjacji mułowcowej, w których obok osadów klastycznych, z reguły drobnozianistych, pospolicie występują pokłady węgla, nieraz znacznej miąższości. Cała krakowska seria piaskowcowa interpretowana jest jako osady rozległej równiny aluwialnej związanej z systemem piaszczystych, dystalnych rzek roztokowych. W obrębie traktów koryt rzek roztokowych powstawały tam ciała piaszczyste, które zazwyczaj wykazują cechy wielopiętrowych nagromadzeń osadów korytowych. Obszary pozakorytowe były miejscem depozycji materiału drobnoziarnistego i miejscem rozwoju węglotwórczych torfowisk; w pobliżu traktów koryt rozwijały się tam też glify krewasowe. Dominującym typem torfowisk w omawianej serii były wilgotne torfowiska leśne. Pokłady węgla nie mają charakteru ciągłych pokryw o stałej miąższości, a ich geometria i lateralne rozprzestrzenienie zależało od przebiegu i rozwoju sieci traktów systemu rzecznego. Obserwowane zjawiska wielkoskalowego rozszczepiania pokładów węgla i widoczne w tych miejscach lateralne przejścia do osadów korytowych dowodzą współistnienia traktów rzecznych i węglotwórczych torfowisk rozwiniętych na obszarach pozakorytowych Litosomy piaskowcowe mają geometrię pokryw, ale o ograniczonym zasięgu lateralnym. Za stosunkowo dużą stabilnością macierzystych traktów koryt przemawia znaczna miąższość tych litosomów, podobnie jak pospolita, znaczna miąższość pokładów węgla. Naprzemianległe występowanie w profilach pionowych ciał piaskowcowych i ciał reprezentujących osady asocjacji mułowcowej jest wynikiem naturalnych procesów zachodzących na równinie aluwialnej, które powodowały przemieszczanie się środośrodowisk depozycyjnych, głównie procesów awulsji całych traktówkoryt rzecznych. Architektura sedymentacyjna krakowskiej serii piaskowcowej odzwierciedla przede wszystkim efekty wspomnianych procesów, a w dużym stopniu związana jest też ze zróżnicowaną kompakcją osadów gruboziarnistych, drobnoziarnistych i torfów.
Źródło:
Annales Societatis Geologorum Poloniae; 2007, 77, No 3; 219-268
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sand- and mud-filled fluvial palaeochannels in the Wielkopolska Member of Neogene Poznań Formation, central Poland
Autorzy:
Widera, M.
Powiązania:
https://bibliotekanauki.pl/articles/191168.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
fluvial lithosomes
floodplain deposits
channel-fill facies
channel width-depth ratio
hyperconcentrated flow
anastomosing river system
Opis:
This study focuses on the single- and multi-storey fluvial palaeochannel lithosomes encased in mud- rich floodplain deposits in the alluvial succession of the late Neogene Wielkopolska Member of the Poznań For- mation, central Poland, well-exposed in the lignite mining pits of the region. The fluvial lithosomes include both sand-filled and mud-filled channel varieties. The channel-fill facies are not diagnostic for any particular type of fluvial system, as the fine- to very fine-grained sandy deposits are massive to trough cross-stratified and also the muddy deposits are massive to weakly flat-laminated. The scarcity of lateral accretion bedding precludes the possibility of meandering rivers, whereas the low width/thickness ratios of the palaeochannels preclude braided rivers. The width/thickness ratio is in the range of 4.5–14 (averaging 7.5) for sand-filled channels and in the range of 6–10 (averaging 9) for mud-filled ones, which indicates narrow ribbons in general classification of fluvial channel belts. The origin of the alluvial succession is attributed to a W-/NW-directed anastomosing river system characterized by laterally inactive cut-and-fill channels with cohesive and vegetated banks. The sand-filled chan- nels conveyed water and sediment discharges on a perennial basis, whereas the mud-filled conduits are thought to have been the cut-and-abandoned branches of the system, filled by overbank flooding from adjacent active channels. Minor lateral migration of channels occurred probably during periods of minimum subsidence rate, when the fluvial system was forced to develop lateral accommodation for its discharges.
Źródło:
Annales Societatis Geologorum Poloniae; 2013, 83, 1; 19-28
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
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