Preliminary paleoenvironmental analysis of permafrost deposits at Batagaika megaslump, Yana Uplands, northeast Siberia
Abstract A megaslump at Batagaika, in northern Yakutia, exposes a remarkable stratigraphic sequence of permafrost deposits ~50–80 m thick. To determine their potential for answering key questions about Quaternary environmental and climatic change in northeast Siberia, we carried out a reconnaissance...
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Online Access: | http://dx.doi.org/10.1017/qua.2016.15 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589416000156 |
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crcambridgeupr:10.1017/qua.2016.15 2024-10-13T14:07:58+00:00 Preliminary paleoenvironmental analysis of permafrost deposits at Batagaika megaslump, Yana Uplands, northeast Siberia Murton, Julian B. Edwards, Mary E. Lozhkin, Anatoly V. Anderson, Patricia M. Savvinov, Grigoriy N. Bakulina, Nadezhda Bondarenko, Olesya V. Cherepanova, Marina V. Danilov, Petr P. Boeskorov, Vasiliy Goslar, Tomasz Grigoriev, Semyon Gubin, Stanislav V. Korzun, Julia A. Lupachev, Alexei V. Tikhonov, Alexei Tsygankova, Valeriya I. Vasilieva, Galina V. Zanina, Oksana G. 2017 http://dx.doi.org/10.1017/qua.2016.15 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589416000156 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 87, issue 2, page 314-330 ISSN 0033-5894 1096-0287 journal-article 2017 crcambridgeupr https://doi.org/10.1017/qua.2016.15 2024-09-18T04:03:45Z Abstract A megaslump at Batagaika, in northern Yakutia, exposes a remarkable stratigraphic sequence of permafrost deposits ~50–80 m thick. To determine their potential for answering key questions about Quaternary environmental and climatic change in northeast Siberia, we carried out a reconnaissance study of their cryostratigraphy and paleoecology, supported by four rangefinder 14 C ages. The sequence includes two ice complexes separated by a unit of fine sand containing narrow syngenetic ice wedges and multiple paleosols. Overall, the sequence developed as permafrost grew syngenetically through an eolian sand sheet aggrading on a hillslope. Wood remains occur in two forest beds, each associated with a reddened weathering horizon. The lower bed contains high amounts of Larix pollen (>20%), plus small amounts of Picea and Pinus pumila , and is attributed to interglacial conditions. Pollen from the overlying sequence is dominated by herbaceous taxa (~70%–80%) attributed to an open tundra landscape during interstadial climatic conditions. Of three hypothetical age schemes considered, we tentatively attribute much of the Batagaika sequence to Marine Oxygen Isotope Stage (MIS) 3. The upper and lower forest beds may represent a mid–MIS 3 optimum and MIS 5, respectively, although we cannot discount alternative attributions to MIS 5 and 7. Article in Journal/Newspaper Ice permafrost Tundra wedge* Yakutia Siberia Cambridge University Press Quaternary Research 87 2 314 330 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract A megaslump at Batagaika, in northern Yakutia, exposes a remarkable stratigraphic sequence of permafrost deposits ~50–80 m thick. To determine their potential for answering key questions about Quaternary environmental and climatic change in northeast Siberia, we carried out a reconnaissance study of their cryostratigraphy and paleoecology, supported by four rangefinder 14 C ages. The sequence includes two ice complexes separated by a unit of fine sand containing narrow syngenetic ice wedges and multiple paleosols. Overall, the sequence developed as permafrost grew syngenetically through an eolian sand sheet aggrading on a hillslope. Wood remains occur in two forest beds, each associated with a reddened weathering horizon. The lower bed contains high amounts of Larix pollen (>20%), plus small amounts of Picea and Pinus pumila , and is attributed to interglacial conditions. Pollen from the overlying sequence is dominated by herbaceous taxa (~70%–80%) attributed to an open tundra landscape during interstadial climatic conditions. Of three hypothetical age schemes considered, we tentatively attribute much of the Batagaika sequence to Marine Oxygen Isotope Stage (MIS) 3. The upper and lower forest beds may represent a mid–MIS 3 optimum and MIS 5, respectively, although we cannot discount alternative attributions to MIS 5 and 7. |
format |
Article in Journal/Newspaper |
author |
Murton, Julian B. Edwards, Mary E. Lozhkin, Anatoly V. Anderson, Patricia M. Savvinov, Grigoriy N. Bakulina, Nadezhda Bondarenko, Olesya V. Cherepanova, Marina V. Danilov, Petr P. Boeskorov, Vasiliy Goslar, Tomasz Grigoriev, Semyon Gubin, Stanislav V. Korzun, Julia A. Lupachev, Alexei V. Tikhonov, Alexei Tsygankova, Valeriya I. Vasilieva, Galina V. Zanina, Oksana G. |
spellingShingle |
Murton, Julian B. Edwards, Mary E. Lozhkin, Anatoly V. Anderson, Patricia M. Savvinov, Grigoriy N. Bakulina, Nadezhda Bondarenko, Olesya V. Cherepanova, Marina V. Danilov, Petr P. Boeskorov, Vasiliy Goslar, Tomasz Grigoriev, Semyon Gubin, Stanislav V. Korzun, Julia A. Lupachev, Alexei V. Tikhonov, Alexei Tsygankova, Valeriya I. Vasilieva, Galina V. Zanina, Oksana G. Preliminary paleoenvironmental analysis of permafrost deposits at Batagaika megaslump, Yana Uplands, northeast Siberia |
author_facet |
Murton, Julian B. Edwards, Mary E. Lozhkin, Anatoly V. Anderson, Patricia M. Savvinov, Grigoriy N. Bakulina, Nadezhda Bondarenko, Olesya V. Cherepanova, Marina V. Danilov, Petr P. Boeskorov, Vasiliy Goslar, Tomasz Grigoriev, Semyon Gubin, Stanislav V. Korzun, Julia A. Lupachev, Alexei V. Tikhonov, Alexei Tsygankova, Valeriya I. Vasilieva, Galina V. Zanina, Oksana G. |
author_sort |
Murton, Julian B. |
title |
Preliminary paleoenvironmental analysis of permafrost deposits at Batagaika megaslump, Yana Uplands, northeast Siberia |
title_short |
Preliminary paleoenvironmental analysis of permafrost deposits at Batagaika megaslump, Yana Uplands, northeast Siberia |
title_full |
Preliminary paleoenvironmental analysis of permafrost deposits at Batagaika megaslump, Yana Uplands, northeast Siberia |
title_fullStr |
Preliminary paleoenvironmental analysis of permafrost deposits at Batagaika megaslump, Yana Uplands, northeast Siberia |
title_full_unstemmed |
Preliminary paleoenvironmental analysis of permafrost deposits at Batagaika megaslump, Yana Uplands, northeast Siberia |
title_sort |
preliminary paleoenvironmental analysis of permafrost deposits at batagaika megaslump, yana uplands, northeast siberia |
publisher |
Cambridge University Press (CUP) |
publishDate |
2017 |
url |
http://dx.doi.org/10.1017/qua.2016.15 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589416000156 |
genre |
Ice permafrost Tundra wedge* Yakutia Siberia |
genre_facet |
Ice permafrost Tundra wedge* Yakutia Siberia |
op_source |
Quaternary Research volume 87, issue 2, page 314-330 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/qua.2016.15 |
container_title |
Quaternary Research |
container_volume |
87 |
container_issue |
2 |
container_start_page |
314 |
op_container_end_page |
330 |
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1812814543610445824 |