Fluvial processes under late Pleni-Weichselian environmental conditions: a case study from the Warenka site in central Poland
Strong aggradational tendencies during the late Pleni-Weichselian have been noted in river valleys in central Europe. Thick series of mineral deposits were laid down, but also organic or mineral-organic horizons were formed under favourable conditions. The study area is located in the central sectio...
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ftdoajarticles:oai:doaj.org/article:a6e11db7c5d14ce4b187315ee8995eb4 2024-09-30T14:45:20+00:00 Fluvial processes under late Pleni-Weichselian environmental conditions: a case study from the Warenka site in central Poland Petera-Zganiacz Joanna Brzozowicz Dorota Pawłowski Dominik Kaczmarek Paweł 2024-08-01T00:00:00Z https://doi.org/10.14746/logos.2024.30.2.09 https://doaj.org/article/a6e11db7c5d14ce4b187315ee8995eb4 EN eng Sciendo https://doi.org/10.14746/logos.2024.30.2.09 https://doaj.org/toc/2080-6574 2080-6574 doi:10.14746/logos.2024.30.2.09 https://doaj.org/article/a6e11db7c5d14ce4b187315ee8995eb4 Geologos, Vol 30, Iss 2, Pp 81-94 (2024) sand-bed braided river pollen analysis cladocera analysis osl and 14c dating palaeoenvironmental reconstruction warta river valley Geology QE1-996.5 article 2024 ftdoajarticles https://doi.org/10.14746/logos.2024.30.2.09 2024-09-17T16:00:47Z Strong aggradational tendencies during the late Pleni-Weichselian have been noted in river valleys in central Europe. Thick series of mineral deposits were laid down, but also organic or mineral-organic horizons were formed under favourable conditions. The study area is located in the central section of the valley of the River Warta within an extraglacial area of the last glaciation. At the Warenka site alluvia, that attain thicknesses of 16 m, were analysed. Lithofacies analysis, OSL dating of mineral sediments and radiocarbon dating of organic and mineral-organic strata were performed. Organic and mineral-organic deposits were also subjected to pollen and Cladocera analyses. Together this set of analyses was used to determine fluvial processes and environmental conditions during the late Pleni-Weichselian. The results obtained allow the conclusion that these levels were deposited in the sedimentary environment of a low-energy, sand-bed braided river, which operated in the period from approximately 30 to 24 cal kBP – the late Pleni-Weichselian. During this time, there were periods when shallow water bodies were formed on the valley bottom, where deposition of organic material was possible. The presence of this type of sediment made it possible to reconstruct the vegetation cover; this had the character of a steppe-tundra, periodically shrubby steppe-tundra. Short-lived reservoirs were characterised by shallow-water settings with weakly developed vegetation and temporary influence of floodwaters as indicated by changes in cladoceran assemblages. Pollen spectra, low concentration of cladocerans, as well as the presence of the cold-tolerant Cladocera taxa are indicative of cold climatic conditions. Article in Journal/Newspaper Tundra Directory of Open Access Journals: DOAJ Articles Geologos 30 2 81 94 |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
sand-bed braided river pollen analysis cladocera analysis osl and 14c dating palaeoenvironmental reconstruction warta river valley Geology QE1-996.5 |
spellingShingle |
sand-bed braided river pollen analysis cladocera analysis osl and 14c dating palaeoenvironmental reconstruction warta river valley Geology QE1-996.5 Petera-Zganiacz Joanna Brzozowicz Dorota Pawłowski Dominik Kaczmarek Paweł Fluvial processes under late Pleni-Weichselian environmental conditions: a case study from the Warenka site in central Poland |
topic_facet |
sand-bed braided river pollen analysis cladocera analysis osl and 14c dating palaeoenvironmental reconstruction warta river valley Geology QE1-996.5 |
description |
Strong aggradational tendencies during the late Pleni-Weichselian have been noted in river valleys in central Europe. Thick series of mineral deposits were laid down, but also organic or mineral-organic horizons were formed under favourable conditions. The study area is located in the central section of the valley of the River Warta within an extraglacial area of the last glaciation. At the Warenka site alluvia, that attain thicknesses of 16 m, were analysed. Lithofacies analysis, OSL dating of mineral sediments and radiocarbon dating of organic and mineral-organic strata were performed. Organic and mineral-organic deposits were also subjected to pollen and Cladocera analyses. Together this set of analyses was used to determine fluvial processes and environmental conditions during the late Pleni-Weichselian. The results obtained allow the conclusion that these levels were deposited in the sedimentary environment of a low-energy, sand-bed braided river, which operated in the period from approximately 30 to 24 cal kBP – the late Pleni-Weichselian. During this time, there were periods when shallow water bodies were formed on the valley bottom, where deposition of organic material was possible. The presence of this type of sediment made it possible to reconstruct the vegetation cover; this had the character of a steppe-tundra, periodically shrubby steppe-tundra. Short-lived reservoirs were characterised by shallow-water settings with weakly developed vegetation and temporary influence of floodwaters as indicated by changes in cladoceran assemblages. Pollen spectra, low concentration of cladocerans, as well as the presence of the cold-tolerant Cladocera taxa are indicative of cold climatic conditions. |
format |
Article in Journal/Newspaper |
author |
Petera-Zganiacz Joanna Brzozowicz Dorota Pawłowski Dominik Kaczmarek Paweł |
author_facet |
Petera-Zganiacz Joanna Brzozowicz Dorota Pawłowski Dominik Kaczmarek Paweł |
author_sort |
Petera-Zganiacz Joanna |
title |
Fluvial processes under late Pleni-Weichselian environmental conditions: a case study from the Warenka site in central Poland |
title_short |
Fluvial processes under late Pleni-Weichselian environmental conditions: a case study from the Warenka site in central Poland |
title_full |
Fluvial processes under late Pleni-Weichselian environmental conditions: a case study from the Warenka site in central Poland |
title_fullStr |
Fluvial processes under late Pleni-Weichselian environmental conditions: a case study from the Warenka site in central Poland |
title_full_unstemmed |
Fluvial processes under late Pleni-Weichselian environmental conditions: a case study from the Warenka site in central Poland |
title_sort |
fluvial processes under late pleni-weichselian environmental conditions: a case study from the warenka site in central poland |
publisher |
Sciendo |
publishDate |
2024 |
url |
https://doi.org/10.14746/logos.2024.30.2.09 https://doaj.org/article/a6e11db7c5d14ce4b187315ee8995eb4 |
genre |
Tundra |
genre_facet |
Tundra |
op_source |
Geologos, Vol 30, Iss 2, Pp 81-94 (2024) |
op_relation |
https://doi.org/10.14746/logos.2024.30.2.09 https://doaj.org/toc/2080-6574 2080-6574 doi:10.14746/logos.2024.30.2.09 https://doaj.org/article/a6e11db7c5d14ce4b187315ee8995eb4 |
op_doi |
https://doi.org/10.14746/logos.2024.30.2.09 |
container_title |
Geologos |
container_volume |
30 |
container_issue |
2 |
container_start_page |
81 |
op_container_end_page |
94 |
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1811646062643904512 |