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Wyświetlanie 1-3 z 3
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
Artykuł
Tytuł:
New palaeoclimate reconstructions based on multidisciplinary investigation in the Ferdynandów 2011 stratotype site (eastern Poland)
Autorzy:
Stachowicz-Rybka, R.
Pidek, I. A.
Żarski, M.
Powiązania:
https://bibliotekanauki.pl/articles/2060375.pdf
Data publikacji:
2017
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
palynostratigraphy
climatostratigraphy
plant macroremains
early Middle Pleistocene
MIS 13–15
Eastern Poland
Opis:
Drilling carried out in 2011 at Ferdynandów (E Poland), serving as a stratotype for the Ferdynandovian Interglacial, enabled its re-examination with high-resolution palynological, plant macroremains, and sedimentological analyses. Lacustrine sediments included a record of the Late Sanian 1 (= Elsterian 1) Glaciation, a complete Ferdynandovian succession, and the Early Sanian 2 (= Elsterian 2) Glaciation. Particular similarities in the succession observed between the Ferdynandów 2011 profile and the adjacent sites of the same age in Łuków-3A and Zdany provide a basis for detailed palaeoclimate interpretation. The Ferdynandovian succession of all the three pollen profiles can be clearly divided into two distinct interglacials separated by a sequence of pollen spectra typical of a glacial succession with pollen zones of stadial-interstadial fluctuations. Warm units in the Ferdynandów 2011 succession correspond to climatostratigraphic units of Ferdynandovian 1 and 2, while the cold unit – to Ferdynandovian 1/2. This division can be applied to all Ferdynandovian successions in Poland and allows their correlation with the early Middle Pleistocene Cromerian Complex of Western Europe (Cromerian II Westerhoven and Cromerian III Rosmalen) as well as with Marine Isotope Stages (MIS) 13–15. For each biostratigraphic unit, mean temperatures of the warmest and coldest months, and mean annual temperature and precipitation were reconstructed. For the comparison with the Ferdynandów 2011 pollen diagram the data based on modern pollen analogues for the Łuków-3A pollen diagram were used.
Źródło:
Geological Quarterly; 2017, 61, 2; 276--290
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A bi-partite Ferdynandovian succession from Łuków, Eastern Poland: a new palynostratigraphic approach
Autorzy:
Pidek, I. A.
Małek, M.
Powiązania:
https://bibliotekanauki.pl/articles/2060626.pdf
Data publikacji:
2010
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Ferdynandovian pollen succession
Łuków Plain
Middle Pleistocene
Marine Oxygen Isotope stages (MIS)
palynostratigraphy
Opis:
The paper presents a new approach to the Middle Pleistocene lacustrine deposits at the Łuków site (Łuków Plain, E Poland). The resultsof pollen analysis document a rarely found complete Ferdynandovian pollen succession with evidence of two warm periods of interglacial rank and two cold ones. New geological and palynological data are presented and interpreted against a background of earlier researchby Rühle and Sobolewska from 1969, including a comparison with the nearest complete Ferdynandovian succession at Zdany (SiedlceUpland) and with the stratotype section of Ferdynandów. The proposed division of the Łuków sequence into two warm periods separatedby a succession typical of glacial periods has been based on a new division of Ferdynandovian pollen succession applied for the first timeto the Podgórze B1 pollen profile. Two warm units and the intervening cold one in the Łuków pollen sequence correspond to theclimatostratigraphical units Ferdynandovian 1 and 2 separated by the cooling/glaciation (Ferdynandovian 1/2) and can be related to theCromerian Complex.
Źródło:
Geological Quarterly; 2010, 54, 1; 69-84
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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