Climate change records in coversand deposits from the eastern margin of the Tarnów Plateau (southeast Poland)
Abstract Coversands (CSs) are one of the most distinctive sediments within the European Sand Belt. Their extraordinary thickness, exceeding 6 m, was recorded at the Góra Motyczna site located at the edge of the Wisłoka River valley in the Tarnów Plateau (southeast Poland). The sedimentary record of...
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crwiley:10.1002/ppp.2199 2024-06-02T08:13:09+00:00 Climate change records in coversand deposits from the eastern margin of the Tarnów Plateau (southeast Poland) Sokołowski, Tadeusz Woronko, Barbara Chmielowska‐Michalak, Dorota 2023 http://dx.doi.org/10.1002/ppp.2199 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2199 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 34, issue 3, page 428-447 ISSN 1045-6740 1099-1530 journal-article 2023 crwiley https://doi.org/10.1002/ppp.2199 2024-05-03T11:47:42Z Abstract Coversands (CSs) are one of the most distinctive sediments within the European Sand Belt. Their extraordinary thickness, exceeding 6 m, was recorded at the Góra Motyczna site located at the edge of the Wisłoka River valley in the Tarnów Plateau (southeast Poland). The sedimentary record of the studied CSs sets their arrangement into one of two sedimentary cycles. Each consists of sandy (A1 and A2) and silty (B1 and B2) lithofacies, forming an A1 ⇒ B1 ⇒ A2 ⇒ B2 sequence that is considered to be a record of climate change during the Weichselian Late Pleniglacial. Sandy lithofacies accumulation occurred under dry and snow‐free climatic conditions, whereas silty lithofacies accumulation marks an increase in humidity as a result of the presence of snow‐cover. Sediment optical dating indicated that the studied CSs were deposited in a period from ~18–17 to ~16–15 ka. The period of accumulation was therefore short, which is confirmed by the analysis of quartz‐grain shape and surface type. Due to this brevity of aeolian processes during this period, the only change expressed is in grain‐surface microrelief; thus, the quartz grains had already inherited their shape and degree of rounding from their source environments and earlier processes. The source sediments could have been artefacts of Miocene and Quaternary deflationary sediments associated with blowouts. Article in Journal/Newspaper Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 34 3 428 447 |
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English |
description |
Abstract Coversands (CSs) are one of the most distinctive sediments within the European Sand Belt. Their extraordinary thickness, exceeding 6 m, was recorded at the Góra Motyczna site located at the edge of the Wisłoka River valley in the Tarnów Plateau (southeast Poland). The sedimentary record of the studied CSs sets their arrangement into one of two sedimentary cycles. Each consists of sandy (A1 and A2) and silty (B1 and B2) lithofacies, forming an A1 ⇒ B1 ⇒ A2 ⇒ B2 sequence that is considered to be a record of climate change during the Weichselian Late Pleniglacial. Sandy lithofacies accumulation occurred under dry and snow‐free climatic conditions, whereas silty lithofacies accumulation marks an increase in humidity as a result of the presence of snow‐cover. Sediment optical dating indicated that the studied CSs were deposited in a period from ~18–17 to ~16–15 ka. The period of accumulation was therefore short, which is confirmed by the analysis of quartz‐grain shape and surface type. Due to this brevity of aeolian processes during this period, the only change expressed is in grain‐surface microrelief; thus, the quartz grains had already inherited their shape and degree of rounding from their source environments and earlier processes. The source sediments could have been artefacts of Miocene and Quaternary deflationary sediments associated with blowouts. |
format |
Article in Journal/Newspaper |
author |
Sokołowski, Tadeusz Woronko, Barbara Chmielowska‐Michalak, Dorota |
spellingShingle |
Sokołowski, Tadeusz Woronko, Barbara Chmielowska‐Michalak, Dorota Climate change records in coversand deposits from the eastern margin of the Tarnów Plateau (southeast Poland) |
author_facet |
Sokołowski, Tadeusz Woronko, Barbara Chmielowska‐Michalak, Dorota |
author_sort |
Sokołowski, Tadeusz |
title |
Climate change records in coversand deposits from the eastern margin of the Tarnów Plateau (southeast Poland) |
title_short |
Climate change records in coversand deposits from the eastern margin of the Tarnów Plateau (southeast Poland) |
title_full |
Climate change records in coversand deposits from the eastern margin of the Tarnów Plateau (southeast Poland) |
title_fullStr |
Climate change records in coversand deposits from the eastern margin of the Tarnów Plateau (southeast Poland) |
title_full_unstemmed |
Climate change records in coversand deposits from the eastern margin of the Tarnów Plateau (southeast Poland) |
title_sort |
climate change records in coversand deposits from the eastern margin of the tarnów plateau (southeast poland) |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1002/ppp.2199 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2199 |
genre |
Permafrost and Periglacial Processes |
genre_facet |
Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 34, issue 3, page 428-447 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.2199 |
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Permafrost and Periglacial Processes |
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34 |
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3 |
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428 |
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447 |
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1800759841124253696 |