Wszystkie pola: fluvial deposits - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: What was the interglacial river like? Sedimentological investigation of Holsteinian fluvial deposits in eastern Poland
Autorzy:: Zieliński, T.
Terpiłowski, S.
Zieliński, P.
Pidek, I. A.
Godlewska, A.
Czubla, P.
Powiązania:: https://bibliotekanauki.pl/articles/2060162.pdf
Data publikacji:: 2016
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: sedimentology
meandering river
palaeoclimate
Pleistocene
MIS 11
Polska
Opis:: Holsteinian fluvial deposits in the Samica River valley in eastern Poland have been studied, in an approximately 12-m-thick succession filling palaeochannels and comprising sandy channel facies succeeded by a package of gyttja, peat and silt deposited in oxbow. Channel belts including palaeochannel fills cut into outwash sands and are overlain by diamictic sands reworked by solifluction under periglacial conditions. Sedimentological and palynological investigations in combination allowed the recognition of glacial and interglacial deposits. The channel belt was formed by a typical sand-bed, meandering river with deposition controlled by abundant point bars. The sedimentary evolution of the Samica valley is interpreted in the context of the glacial-interglacial cycle. Valley-scale erosion and change of river style from braided to meandering occurred coevally with the decay of an ice sheet (deglaciation) and the main phase of meandering river sedimentation is attributed to latest Elsterian and early Holsteinian. The next part of the interglacial, from pioneer stage to established temperate conditions, is recorded in a biogenic oxbow-lake fill. The succession studied has been compared with published data on the European fluvial deposits of Middle Pleistocene interglacials. It is pointed out here that river channel patterns in western and eastern Europe differed. Based on this observation, some general hypotheses regarding the continental-scale climatic distinctness are put forward.
Źródło:: Geological Quarterly; 2016, 60, 1; 149--166
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The relation between optical bleaching and sedimentological features of fluvial deposits in the Toruń Basin (Poland)
Autorzy:: Weckwerth, P.
Przegiętka, K.
Chruścińska, A.
Pisarska-Jamroży, M.
Powiązania:: https://bibliotekanauki.pl/articles/2060018.pdf
Data publikacji:: 2013
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: OSL age in version
quartz
optical bleaching
sand-bed braided river
ice-marginal streamway valley
Opis:: Distributions of equivalent doses (DE) obtained by the Single Aliquot Regenerative-dose (SAR) OSL method applied for large aliquots of coarse quartz grains extracted from fluvial sediments are presented and analysed with respect to a fluvial palaeoenvironment. The Nowe Dąbie and Łochowo fluvial succession from the western part of Toruń Basin (eastern part of Noteć–Warta streamway, Toruń-Eberswalde ice-marginal valley) was analysed. The fluvial depositional conditions controlling the extent of daylight bleaching are reconstructed by sedimentological studies. The relation between the amount of bleaching and sedimentological properties of fluvial deposits indicate that ripple cross-laminated sands that accumulated on the floodplain and horizontally-bedded sands deposited in shallow channels are more appropriate for OSL dating than sands derived from the deep channel. Along with luminescence results obtained for the river deposits, data measured from an ancient pottery sample, ensuring complete reset of the OSL signal, are presented, compared to and discussed. On this base the poorly bleached sediment samples are identified and an adjustment factor is introduced for correcting their OSL dating results in order to avoid age inversion. The application of the adjustment factor is found to minimize overestimation of OSL ages of sediments.
Źródło:: Geological Quarterly; 2013, 57, 1; 31--44
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Eemian–Weichselian Pleniglacial fluvial deposits in S Poland (an example of the Vistula River valley in Kraków)
Autorzy:: Sokołowski, T.
Wacnik, A.
Woronko, B.
Madeja, J.
Powiązania:: https://bibliotekanauki.pl/articles/2059974.pdf
Data publikacji:: 2014
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: Eemian-Weichselian
river deposits
climate change
environmental change
Opis:: A fragment of the middle terrace in the VistulaRivervalley, nearby the railway station in Kraków, is formed by fluvial channel and overbank deposits of the PrądnikRiver, which bear a record of various environments affected by changing climatic conditions. The sedimentary succession includes two complexes that differ in lithofacies. The older complex comprises fining-upward deposits (channel sand and gravelly sand with medium- and large-scale trough cross-stratification) and, less frequently, sand with planar cross-stratification overlain by silt with intercalations of biogenic deposits of abandoned channels. Vegetation accompanying the deposition of biogenic layers was typical of boreal coniferous forests, dominated by Pinus sylvestris with a small admixture of Larix, Pinus cembra, Picea, Betula, and Populus. Periodically, the landscape passed into open areas overgrown by woody tundra. The complex developed as a result of activity of a meandering river under conditions of a moderately cool climate. The younger complex includes the sand lithofacies with horizontal stratification and low-angle cross-stratification, overlain by alternating sands and silts. The topmost part is represented by sands with large- and medium scale planar cross stratification. Lack of biogenic deposits and considerable amount of frosted quartz grains in alluvial sediments indicate aeolian processes of greater intensity, periglacial conditions and evolution towards a braided or transitional river. Pollen successions, absolute dating and studies of structural and textural features of the sediment suggest that the time of its deposition may be estimated at a range between the close of the Eemian Interglacial and the Weichselian Middle Pleniglacial (OIS 5e–OIS 3).
Źródło:: Geological Quarterly; 2014, 58, 1; 71--84
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Preglacjalne osady rzeczne ze stanowiska Baruchowo (Kotlina Płocka)
Preglacial fluvial deposits in the Baruchowo site (Płock Basin)
Autorzy:: Roman, M.
Powiązania:: https://bibliotekanauki.pl/articles/2062797.pdf
Data publikacji:: 2010
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: osady fluwioperyglacjalne
analiza sedymentologiczna
litostratygrafia
plejstocen
Kotlina Płocka
centralna Polska
fluvioperiglacial deposits
sedimentological analysis
lithostratigraphy
Pleistocene
Płock Basin
Central Poland
Opis:: Zestawiono wyniki badań geologicznych prowadzonych w odsłonięciu Baruchowo, usytuowanym w zboczu wysoczyzny morenowej obramowującej od południa Kotlinę Płocką. Szczegółowej analizie poddano bezwapienne, kwarcowe piaski i piaski ze żwirem, niezawierające materiału skandynawskiego, wypełniające kopalną dolinę wyciętą w neogeńskich iłach i odsłaniające się w dolnej części stanowiska w Baruchowie. Skład mineralny frakcji ciężkiej i charakter mineralno-petrograficzny piasków i żwirów wyraźne odróżniają je od osadów plejstocenu glacjalnego, co w powiązaniu z ich sytuacją geologiczną pozwala uznać, że są to utwory preglacjalne sensu lato. Na podstawie badań sedymentologicznych, strukturalnych i teksturalnych określono, że analizowane utwory reprezentują dwudzielną serię osadów korytowych piaskodennej rzeki roztokowej, odprowadzającej wody ku północnemu zachodowi. Górna część serii rzecznej to osady fluwioperyglacjalne, charakteryzujące się dominacją ziaren kwarcu o obróbce eolicznej. Ich akumulacja zachodziła w warunkach zimnego, suchego klimatu, bez śladów bezpośredniego wpływu lądolodu, w okresie długotrwałego rozwoju procesów eolicznych w którymś z zimnych pięter dolnego plejstocenu. Czas funkcjonowania rzeki roztokowej i depozycji serii aluwialnych mógł przypadać na schyłek kompleksu preglacjalnego (dolna część serii) po okres panowania warunków peryglacjalnych, poprzedzających transgresję lądolodu zlodowacenia narwi (strop serii), lub tylko na okres zlodowacenia narwi. Nie można też wykluczyć, że akumulacja serii rzecznej nastąpiła dopiero na początku zlodowacenia sanu, poprzedzając wkroczenie pierwszego lądolodu w obszar Kotliny Płockiej. Datowania TL piasków rzecznych z Baruchowa wykazały, że są to osady starsze od 1000 ka.
The paper presents the results of geological investigations carried out at the Baruchowo exposure situated in the slope of the morainic plateau framing the Płock Basin from the south. Non-calcite quartz-dominated sand and gravelly sand were examined in detail. The deposits are devoid of Scandinavian material. They fill a palaeovalley channelled in Neogene clays and are exposed in the lower part of the Baruchowo exposure. Mineral composition of the heavy fraction and petrography of the sands and gravels clearly distinguish the series from Pleistocene glacial deposits, and together with their position in the geological section they suggest that these are preglacial deposits sensu lato. Sedimentological, structural and textural investigations indicate that this is a bipartite series of channel deposits of a sand-bed braided river flowing to the NW. The uppermost part of the river series (B1b) represents fluvioperiglacial deposits dominated by round matt quartz grains, indicative of aeolian origin. Their accumulation proceeded under cold and dry climate conditions without a direct ice sheet effect and during a long-term aeolian process at the beginning of some cold period of early Pleistocene time. The braided river system and deposition of the alluvial series may have occurred from the end of the Preglacial Complex sedimentation (lower part of the alluvial sequence) up to the stage of periglacial conditions preceding the advance of the Narevian ice sheet (upper part of the sequence), or only during the Narevian Glaciation. We cannot exclude that the accumulation of the river series took place at the beginning of the Nidanian Glaciation, preceding the first invasion of the ice sheet onto the Płock Basin. Thermoluminescence (TL) dating of river sands suggests that the sediment is older than 1000 ka.
Źródło:: Biuletyn Państwowego Instytutu Geologicznego; 2010, 438; 107--121
0867-6143
Pojawia się w:: Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Rakushechny Yar site: lacustrine and fluvial deposits, buried soils and shell platforms from 6th mill. BC
Autorzy:: Dolbunova, Ekaterina
Szmańda, Jacek
Kittel, Piotr
Kulkova, Marianna
Aleksandrovskiy, Alexander
Cywa, Katarzyna
Mazurkevich, Andrey
Powiązania:: https://bibliotekanauki.pl/articles/1366033.pdf
Data publikacji:: 2020-12-24
Wydawca:: Łódzkie Towarzystwo Naukowe
Tematy:: Neolithic
flood-plain multi-layer site
sedimentology
buried soils
shell platforms
Opis:: The Rakushechny Yar site is a floodplain multi-layer archaeological site encompassing strata dated from the Early Neolithic to the Bronze Age. It is characterised by a complex stratigraphy, with the presence of different deposits, buried soils and archaeological layers. Fluvial deposits interlay different settlement strata, which provides an opportunity to elaborate a precise chronological scheme and to study the successive changes in hydrological regime, climate and vegetation, along with the phases of human occupation. A study of the pastes used in ceramic manufacture was conducted to investigate changes in the procuring of raw materials, whose procurement would have depended heavily on their availability and sedimentation process. The fluvial deposits, which have safely preserved the Neolithic–Bronze Age archaeological layers, reach thicknesses of more than 6 m, which makes this site interesting both for the reconstruction of the human–environmental interaction and for the palaeoenvironmental history of the region.
Źródło:: Acta Geographica Lodziensia; 2020, 110; 61-80
0065-1249
Pojawia się w:: Acta Geographica Lodziensia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

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

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Skocz do pozycji: 7.

Tytuł:: Chemical and mineralogical characteristics and origin of placer gold from fluvial deposits of Żeliszowski Creek (North Sudetic Basin, SW Poland)
Autorzy:: Kania, Marcin Łukasz
Powiązania:: https://bibliotekanauki.pl/articles/27324242.pdf
Data publikacji:: 2023
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: gold
Hg-amalgams
inclusions
placer deposits
North Sudetic Basin
Opis:: Chemical and mineralogical analyses of individual detrital gold grains collected from recent channel-fill deposits of Żeliszowski Creek, located between the towns of Lwówek Śląski and Bolesławiec, were made, together with determination of the Au-bearing mineral assemblages and indication of probable source areas. The analysed gold grains have admixtures of silver, mercury and copper. Numerous inclusions of ore minerals, mainly Cu, Hg selenides and Cu, Pb and Bi sulphides were found in the detrital gold grains. These minerals are characteristic of Permian, Au-bearing, red-bed successions in the region, and of quartz veins of the Kaczawa Metamorphic Complex. This supports the hypothesis of a polygenetic origin for the Lower Silesian alluvial gold-bearing deposits. The applied research methodology may be successfully used in polymetallic ore deposit prospecting more generally.
Źródło:: Geological Quarterly; 2023, 67, 2; art. no. 12
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

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

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Skocz do pozycji: 9.

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

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Skocz do pozycji: 10.

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

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