The Siberian loess record and its significance for reconstruction of Pleistocene climate change in north-central Asia
The Siberian loess represents the most significant terrestrial proxy record of Quaternary climatic history in northern Asia. Loess is extensive in southern Siberia, between the Irtysh Basin in the west and the Angara Basin in the east. Palaeoenvironmental multi-proxy data (magnetic susceptibility (M...
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ftunivzlinpubl:oai:publikace.k.utb.cz:10563/1002041 2023-07-16T04:01:06+02:00 The Siberian loess record and its significance for reconstruction of Pleistocene climate change in north-central Asia Chlachula, Jiří 2003-09 http://publikace.k.utb.cz/handle/10563/1002041 en eng Pergamon Elsevier Science Ltd. https://www.sciencedirect.com/science/article/pii/S0277379103001823 Quaternary Science Reviews http://publikace.k.utb.cz/handle/10563/1002041 Quaternary Science Reviews Earth atmosphere Grain size and shape Isotopes Sediments Soils Data source Climate change loess paleoclimate paleoenvironment Pleistocene proxy climate record Asia Russian Federation article 2003 ftunivzlinpubl 2023-06-25T07:40:00Z The Siberian loess represents the most significant terrestrial proxy record of Quaternary climatic history in northern Asia. Loess is extensive in southern Siberia, between the Irtysh Basin in the west and the Angara Basin in the east. Palaeoenvironmental multi-proxy data (magnetic susceptibility (MS), grain size, % CaCO3, % TOC, pollen, etc.) from high-resolution loess-palaeosol sections provide evidence for a strongly fluctuating climatic sequence in north-central Asia during the Late Quaternary, displaying the globally diagnostic sequences found in the deep-sea oxygen isotope records. MS provides the most continuous and detailed record (encompassing the last two interglacial-glacial cycles) in loess sections in the Minusinsk Basin (Yenisei area) and on the northern Altai Plains. Evidence for periodic atmospheric shifts is provided by gradual changes in the main vegetation zones, with parkland-steppe and mixed taiga during warm interglacial/interstadial stages being replaced by boreal tundra-forest and arid periglacial tundra-steppe during stadials. Climatic pulses from warm intervals to cold are recorded by incipient (forest/steppe)-tundra gleysols. The occurrence of the highest sediment accumulation rates in glacial stages (OIS 4 and OIS 2) in the southern plains and depressions indicates that the most intensive aeolian dust deposition followed the glacial maxima, with the most recent interval dated to ca. 19-15 ka BP. Because of its zonal distribution and pronounced climatic continentality, the Siberian loess region represents an important data source for reconstructing past climates in the Northern Hemisphere. It provides a key to the correlation of other loess regions within the West-East Eurasian continental zone. (C) 2003 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper taiga Tundra Siberia Tomas Bata University Zlin: TBU publications Parkland ENVELOPE(-120.570,-120.570,55.917,55.917) |
institution |
Open Polar |
collection |
Tomas Bata University Zlin: TBU publications |
op_collection_id |
ftunivzlinpubl |
language |
English |
topic |
Earth atmosphere Grain size and shape Isotopes Sediments Soils Data source Climate change loess paleoclimate paleoenvironment Pleistocene proxy climate record Asia Russian Federation |
spellingShingle |
Earth atmosphere Grain size and shape Isotopes Sediments Soils Data source Climate change loess paleoclimate paleoenvironment Pleistocene proxy climate record Asia Russian Federation Chlachula, Jiří The Siberian loess record and its significance for reconstruction of Pleistocene climate change in north-central Asia |
topic_facet |
Earth atmosphere Grain size and shape Isotopes Sediments Soils Data source Climate change loess paleoclimate paleoenvironment Pleistocene proxy climate record Asia Russian Federation |
description |
The Siberian loess represents the most significant terrestrial proxy record of Quaternary climatic history in northern Asia. Loess is extensive in southern Siberia, between the Irtysh Basin in the west and the Angara Basin in the east. Palaeoenvironmental multi-proxy data (magnetic susceptibility (MS), grain size, % CaCO3, % TOC, pollen, etc.) from high-resolution loess-palaeosol sections provide evidence for a strongly fluctuating climatic sequence in north-central Asia during the Late Quaternary, displaying the globally diagnostic sequences found in the deep-sea oxygen isotope records. MS provides the most continuous and detailed record (encompassing the last two interglacial-glacial cycles) in loess sections in the Minusinsk Basin (Yenisei area) and on the northern Altai Plains. Evidence for periodic atmospheric shifts is provided by gradual changes in the main vegetation zones, with parkland-steppe and mixed taiga during warm interglacial/interstadial stages being replaced by boreal tundra-forest and arid periglacial tundra-steppe during stadials. Climatic pulses from warm intervals to cold are recorded by incipient (forest/steppe)-tundra gleysols. The occurrence of the highest sediment accumulation rates in glacial stages (OIS 4 and OIS 2) in the southern plains and depressions indicates that the most intensive aeolian dust deposition followed the glacial maxima, with the most recent interval dated to ca. 19-15 ka BP. Because of its zonal distribution and pronounced climatic continentality, the Siberian loess region represents an important data source for reconstructing past climates in the Northern Hemisphere. It provides a key to the correlation of other loess regions within the West-East Eurasian continental zone. (C) 2003 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Chlachula, Jiří |
author_facet |
Chlachula, Jiří |
author_sort |
Chlachula, Jiří |
title |
The Siberian loess record and its significance for reconstruction of Pleistocene climate change in north-central Asia |
title_short |
The Siberian loess record and its significance for reconstruction of Pleistocene climate change in north-central Asia |
title_full |
The Siberian loess record and its significance for reconstruction of Pleistocene climate change in north-central Asia |
title_fullStr |
The Siberian loess record and its significance for reconstruction of Pleistocene climate change in north-central Asia |
title_full_unstemmed |
The Siberian loess record and its significance for reconstruction of Pleistocene climate change in north-central Asia |
title_sort |
siberian loess record and its significance for reconstruction of pleistocene climate change in north-central asia |
publisher |
Pergamon Elsevier Science Ltd. |
publishDate |
2003 |
url |
http://publikace.k.utb.cz/handle/10563/1002041 |
long_lat |
ENVELOPE(-120.570,-120.570,55.917,55.917) |
geographic |
Parkland |
geographic_facet |
Parkland |
genre |
taiga Tundra Siberia |
genre_facet |
taiga Tundra Siberia |
op_source |
Quaternary Science Reviews |
op_relation |
https://www.sciencedirect.com/science/article/pii/S0277379103001823 Quaternary Science Reviews http://publikace.k.utb.cz/handle/10563/1002041 |
_version_ |
1771550574753349632 |