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Katarzyna Issmer - One of the best experts on this subject based on the ideXlab platform.
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Vistulian loess deposits in western poland and their palaeoenvironmental implications
Quaternary International, 2001Co-Authors: Katarzyna IssmerAbstract:The loess deposits of western Poland are a periglacial facies, having been deposited in the PleniVistulian. So far, western Poland is the onlypart of the countryin which Vistulian loess deposits, occurring as small patches on di !erent glacial and glacio#uvial landfoms, have been found. The diagnostic features of these sediments provide a tool for the sub-division of the main lithofacies. Loess deposits occur in two main lithofacies: massive loess (Lm) and laminated loess (Ll). There are three sub-lithofacies within the laminated loess: cryptolaminated (sl), laminated loess sensu stricto (ll) and banded loess (sm). Loess lithofacies are associated with a varied topographyand are distributed in the end moraines, till plains and outwash plains. There is a signi "cant correlation with the periglacial zone and aeolian processes active during the Vistulian in western Poland. 2001 Elsevier Science Ltd and INQUA. All rights reserved.
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Vistulian loess deposits of the dalkow hills
Geological Quarterly, 1999Co-Authors: Katarzyna IssmerAbstract:A new site of loess deposits of the Dalkow Hills at Cisow, and spatial relations between loess deposits and glacial deposits are presented in order to determine potential sources for alimentation of loess material. Based on detailed lithologic investigations, including textural, structural and lithofacial analysis, massive and crypto-laminated loess deposits were identified. Genesis of loess deposits at Cisow suggests that these are of the Vistulian age, formed under periglacial conditions in this area after a retreat of the ice sheet of the Leszno Phase (20 ka BP).
Geofffrey Lemdahl - One of the best experts on this subject based on the ideXlab platform.
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late Vistulian insect assemblages from zabinko western poland
Boreas, 2008Co-Authors: Geofffrey LemdahlAbstract:Insect analysis was carried out in deposits from a Late Vistulian site at Zabinko, western Poland. Geomorphological, lithostratigraphical and palaeobotanical investigations have been carried out ea ...
Witold Pawe - One of the best experts on this subject based on the ideXlab platform.
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ZESPO‡ Y MI CZAKÓW W VISTULIA SKICH LESSACH WE WSI CHOBRZANY KO‡ O SANDOMIERZA (PO‡ UDNIOWA POLSKA) Molluscan communities in Vistulian loess located in Chobrzany, a village near Sandomierz (Southern Poland)
2020Co-Authors: Witold PaweAbstract:Malacological analysis was conducted on shell material from loess proo le in Chobrzany village located near Sandomierz. This particular proo le represents a vertical wall, up to 6.5 m high. Its upper part is composed of typical, yellow loess with vertical cracks covered by recent soil. In the lower interval the occurrence of poorly visible lamination and carbonate concretions is observed. Six species of snails were identio ed. These belong to the so-called "loess species". Several types of mollus- can communities can be distinguished on the basis of faunistic changes. These molluscs' assemblages correspond with the palaeoenvironment and they allow for palaeoclimatic and stratigraphical recon- structions. The results of malacological analysis indicate that the loesses in Chobrzany could belong to the youngest loess sequence (Upper Younger Loess), which were deposited during Pleniglacial Phase of Vistulian.
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zespo y mi czakow w vistulia skich lessach we wsi chobrzany ko o sandomierza po udniowa polska molluscan communities in Vistulian loess located in chobrzany a village near sandomierz southern poland
2011Co-Authors: Witold PaweAbstract:Malacological analysis was conducted on shell material from loess proo le in Chobrzany village located near Sandomierz. This particular proo le represents a vertical wall, up to 6.5 m high. Its upper part is composed of typical, yellow loess with vertical cracks covered by recent soil. In the lower interval the occurrence of poorly visible lamination and carbonate concretions is observed. Six species of snails were identio ed. These belong to the so-called "loess species". Several types of mollus- can communities can be distinguished on the basis of faunistic changes. These molluscs' assemblages correspond with the palaeoenvironment and they allow for palaeoclimatic and stratigraphical recon- structions. The results of malacological analysis indicate that the loesses in Chobrzany could belong to the youngest loess sequence (Upper Younger Loess), which were deposited during Pleniglacial Phase of Vistulian.
Aleksandra Majecka - One of the best experts on this subject based on the ideXlab platform.
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Lithological diversity of the deposits of closed depressions in central Poland as a result of their origin conditions
Quaternary International, 2019Co-Authors: Aleksandra Majecka, Leszek Marks, Jacek Forysiak, Anna Tołoczko-pasekAbstract:Abstract Small closed-drainage depressions are a common element of the landscape of Central Poland. Their origin is mainly connected to the melting of blocks of dead ice in the phase of advanced recession of the ice-sheet in the Wartanian Stadial of the Odranian Glaciation. In the Łodź Upland, an analysis of four sites containing sets of depressions has been conducted to determine the lithological properties of their infillings. The analysis revealed that the frequently deep, steep-walled basins are filled in with deposits of various age and origin. Four lithological units, containing sediments ranging from a glacial base to the mineral sediments of the Vistulian, were formed. Many of the depressions do not contain biogenic sediments of the Eemian Interglacial. The lithological suggestions of the age of the deposits allowed to determine two types of depressions - fossil depressions of melting origin, and genetically complex ones that underwent deposition prior to the Eemian Interglacial and with a secondary deepening, most likely as a result of melting of ground ice under thermokarst conditions, during the Vistulian Glaciation (=Weichselian). The dominant views that connect the origin of the multiple depressions solely to the end of the Wartanian should be verified.
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eemian and Vistulian weichselian development of the meltout depression on the watershed between the mroga and mrozyca rivers central poland based on lithological and pollen analysis
Quaternary International, 2016Co-Authors: Aleksandra Majecka, Zofia Balwierz, Jacek Forysiak, Juliusz TwardyAbstract:The lithological and palaeobotanical research conducted in a closed-drainage depression located in the watershed zone between the Mroga and Mrozyca Rivers (Central Poland) allowed for the reconstruction of its palaeogeography in the period subsequent to the retreat of the last ice sheet (Wartanian Stage of the Odranian Glaciation). The purpose of this article is to gather and synthesise the obtained results, as well as to reconstruct the processes of development and filling in the studied depression over the last 135,000 years. The post-glacial evolution of the relief was recorded in the mineral and biogenic sediments deposited on glacial formations. The modern closed-drainage depression is a trace of a fossil extensive glacial meltout depression. The post-glacial development of the land relief within the depression involved three stages, dominated by different types of morphogenesis, i.e. the deglaciation stage during the Wartanian Stage of the Odranian Glaciation, the Eemian Interglacial-Early Vistulian aggradation stage, and the Vistulian aggradation-denudation stage. High thickness of the identified biogenic sediments suggests considerable transformations of the relief of the watershed during the two cycles of temperate climate – the Eemian Interglacial and the Holocene. The thickness of the mineral sediments suggest low dynamics of the environment during the Last Glacial Maximum (LGM), and undermine the hypotheses on the determining effect of periglacial conditions on the character of the relief of Central Poland. The obtained results constitute an inspiration and starting point for another research project concerning the reconstruction of the watersheds in Central Poland.
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Eemian and Vistulian (Weichselian) development of the meltout depression on the watershed between the Mroga and Mrożyca Rivers (Central Poland) based on lithological and pollen analysis
Quaternary International, 2016Co-Authors: Aleksandra Majecka, Zofia Balwierz, Jacek Forysiak, Juliusz TwardyAbstract:The lithological and palaeobotanical research conducted in a closed-drainage depression located in the watershed zone between the Mroga and Mrozyca Rivers (Central Poland) allowed for the reconstruction of its palaeogeography in the period subsequent to the retreat of the last ice sheet (Wartanian Stage of the Odranian Glaciation). The purpose of this article is to gather and synthesise the obtained results, as well as to reconstruct the processes of development and filling in the studied depression over the last 135,000 years. The post-glacial evolution of the relief was recorded in the mineral and biogenic sediments deposited on glacial formations. The modern closed-drainage depression is a trace of a fossil extensive glacial meltout depression. The post-glacial development of the land relief within the depression involved three stages, dominated by different types of morphogenesis, i.e. the deglaciation stage during the Wartanian Stage of the Odranian Glaciation, the Eemian Interglacial-Early Vistulian aggradation stage, and the Vistulian aggradation-denudation stage. High thickness of the identified biogenic sediments suggests considerable transformations of the relief of the watershed during the two cycles of temperate climate – the Eemian Interglacial and the Holocene. The thickness of the mineral sediments suggest low dynamics of the environment during the Last Glacial Maximum (LGM), and undermine the hypotheses on the determining effect of periglacial conditions on the character of the relief of Central Poland. The obtained results constitute an inspiration and starting point for another research project concerning the reconstruction of the watersheds in Central Poland.
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The palynological record of the Eemian interglacial and Early Vistulian glaciation in deposits of the Żabieniec Południowy fossil basin (Łódź Plateau, central Poland), and its palaeogeographic significance
Acta Palaeobotanica, 2014Co-Authors: Aleksandra MajeckaAbstract:Abstract The vegetation of the Eemian interglacial and Early Vistulian glaciation was reconstructed on the basis of pollen analysis, biogenic and mineral-biogenic sediments from the Żabieniec Południowy locality. It was revealed that the present-day fossil reservoir was formerly a lake existing continuously from the decline of the Warta stadial (LG MPG) to the end of the Early Vistulian (EV4). The upper PleniVistulian age of top sediments, previously accepted on the basis of the radiocarbon date 24 200 ± 350 yrs BP (uncalibrated), was not confirmed by pollen analysis. In the pollen record from the nearby Żabieniec mire a break in biogenic accumulation corresponding to the Lower and Middle PleniVistulian was discovered. In view of the character of PleniVistulian morphogenesis in that area it appears that the deposits of both basins illustrate the development of one large melt-out depression during the whole postglacial period.
Stanislaw Fedorowicz - One of the best experts on this subject based on the ideXlab platform.
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rate of loess accumulation in europe in the late weichselian late Vistulian
Geological Quarterly, 2010Co-Authors: Stanislaw Fedorowicz, Maria łanczontAbstract:The European loess profiles provides evidence of changes in climate in the last glacial cycle. The final stage of loess accumulation took place in the youngest part of the last glacial (28 to 12 ka BP). Loess accumulated in two periods: from 28 to 18 ka BP and from 18 to 13 ka BP. These two stages were separated by a short phase of weaker aeolian activity and weak pedogenesis (initial tundra gleyed soils). The loess sedimentation rate can be defined as a mass accumulation rate (MAR expressed in g/m2 /year). This value was calculated by Frechen et al. (2003) for several dozen loess sites across western and central Europe. In this paper we calculate the MAR for several loess sites in Poland and Ukraine. The MAR distribution across Poland and Ukraine is uneven in these two intervals. The MAR values oscillate between 100 to several thousand g/m2 /year. They markedly increase eastwards, which may be explained by the latitudinal gradient of periglacial climate in the LateWeichselian (= Late Vistulian). The MAR distribution along a N-S trend confirms its large range in western and central Europe. However, the most easterly profiles (Polish and Ukrainian ones) show less variable thicknesses as the MAR was stable at a relatively low level from several hundred to more than a thousand g/m2 /year. This stability of the MAR characterized both loess-forming intervals in this part of Europe.
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stratigraphy of Vistulian glaciogenic deposits and corresponding thermoluminescence dates in the lower vistula region northern poland
Boreas, 2008Co-Authors: Eugeniusz Drozdowski, Stanislaw FedorowiczAbstract:Drozdowski, Eugeniusz & Fedorowicz, Stanislaw 1987 06 01: Stratigraphy of Vistulian glaciogenic deposits and corresponding thermoluminescence dates in the lower Vistula region, northern Poland. Boreas, Vol. 16, pp. 139–153. Oslo. ISSN 0300–9483. Recent stratigraphical and sedimentological studies of Vistulian deposits in the lower Vistula region combined with the results of thermoluminescence dating substantiate the tripartite scheme of chronostratigraphic subdivision of the Vistulian glaciogenic sequence presented earlier by Drozdowski. All the thermoluminescence dates provided by till and intertill waterlain sediments refer to two major stadials which, in the light of sedimentological analyses, seem to represent two independent glacial cycles: an older, dated approximately to the period 59,000–51,000 years B.P., and a younger, dated to the period 17,000–15,000 years B.P. The dividing interval, named the Grudziadz Interstadial, was rather cool in nature. The evidence for this interstadial, apart from the significant break in glaciogenic sediment deposition, comprises some infills of subglacial stream trenches cut during the earlier deglaciation, loess-like silts, fossil sand wedges, and transgressive marine deposits, the latter occurring in restricted areas in the northern part of the region.
