Extensive glaciation in Transbaikalia, Siberia, at the Last Glacial Maximum
Successively smaller glacial extents have been proposed for continental Eurasia during the stadials of the last glacial period leading up to the Last Glacial Maximum (LGM). At the same time the large mountainous region east of Lake Baikal, Transbaikalia, has remained unexplored in terms of glacial c...
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ftunivwollongong:oai:ro.uow.edu.au:smhpapers-4595 2023-05-15T16:38:17+02:00 Extensive glaciation in Transbaikalia, Siberia, at the Last Glacial Maximum Margold, Martin Jansen, John D Gurinov, Artem L Codilean, Alexandru T Fink, David Preusser, Frank Reznichenko, Natalya V Mifsud, Charles C 2016-01-01T08:00:00Z application/pdf https://ro.uow.edu.au/smhpapers/3572 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=4595&context=smhpapers unknown Research Online https://ro.uow.edu.au/smhpapers/3572 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=4595&context=smhpapers Faculty of Science, Medicine and Health - Papers: part A Medicine and Health Sciences Social and Behavioral Sciences article 2016 ftunivwollongong 2020-02-25T11:23:45Z Successively smaller glacial extents have been proposed for continental Eurasia during the stadials of the last glacial period leading up to the Last Glacial Maximum (LGM). At the same time the large mountainous region east of Lake Baikal, Transbaikalia, has remained unexplored in terms of glacial chronology despite clear geomorphological evidence of substantial past glaciations. We have applied cosmogenic 10Be exposure dating and optically stimulated luminescence to establish the first quantitative glacial chronology for this region. Based on eighteen exposure ages from five moraine complexes, we propose that large mountain ice fields existed in the Kodar and Udokan mountains during Oxygen Isotope Stage 2, commensurate with the global LGM. These ice fields fed valley glaciers (>100 km in length) reaching down to the Chara Depression between the Kodar and Udokan mountains and to the valley of the Vitim River northwest of the Kodar Mountains. Two of the investigated moraines date to the Late Glacial, but indications of incomplete exposure among some of the sampled boulders obscure the specific details of the post-LGM glacial history. In addition to the LGM ice fields in the highest mountains of Transbaikalia, we report geomorphological evidence of a much more extensive, ice-cap type glaciation at a time that is yet to be firmly resolved. Article in Journal/Newspaper Ice cap Siberia University of Wollongong, Australia: Research Online |
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Open Polar |
collection |
University of Wollongong, Australia: Research Online |
op_collection_id |
ftunivwollongong |
language |
unknown |
topic |
Medicine and Health Sciences Social and Behavioral Sciences |
spellingShingle |
Medicine and Health Sciences Social and Behavioral Sciences Margold, Martin Jansen, John D Gurinov, Artem L Codilean, Alexandru T Fink, David Preusser, Frank Reznichenko, Natalya V Mifsud, Charles C Extensive glaciation in Transbaikalia, Siberia, at the Last Glacial Maximum |
topic_facet |
Medicine and Health Sciences Social and Behavioral Sciences |
description |
Successively smaller glacial extents have been proposed for continental Eurasia during the stadials of the last glacial period leading up to the Last Glacial Maximum (LGM). At the same time the large mountainous region east of Lake Baikal, Transbaikalia, has remained unexplored in terms of glacial chronology despite clear geomorphological evidence of substantial past glaciations. We have applied cosmogenic 10Be exposure dating and optically stimulated luminescence to establish the first quantitative glacial chronology for this region. Based on eighteen exposure ages from five moraine complexes, we propose that large mountain ice fields existed in the Kodar and Udokan mountains during Oxygen Isotope Stage 2, commensurate with the global LGM. These ice fields fed valley glaciers (>100 km in length) reaching down to the Chara Depression between the Kodar and Udokan mountains and to the valley of the Vitim River northwest of the Kodar Mountains. Two of the investigated moraines date to the Late Glacial, but indications of incomplete exposure among some of the sampled boulders obscure the specific details of the post-LGM glacial history. In addition to the LGM ice fields in the highest mountains of Transbaikalia, we report geomorphological evidence of a much more extensive, ice-cap type glaciation at a time that is yet to be firmly resolved. |
format |
Article in Journal/Newspaper |
author |
Margold, Martin Jansen, John D Gurinov, Artem L Codilean, Alexandru T Fink, David Preusser, Frank Reznichenko, Natalya V Mifsud, Charles C |
author_facet |
Margold, Martin Jansen, John D Gurinov, Artem L Codilean, Alexandru T Fink, David Preusser, Frank Reznichenko, Natalya V Mifsud, Charles C |
author_sort |
Margold, Martin |
title |
Extensive glaciation in Transbaikalia, Siberia, at the Last Glacial Maximum |
title_short |
Extensive glaciation in Transbaikalia, Siberia, at the Last Glacial Maximum |
title_full |
Extensive glaciation in Transbaikalia, Siberia, at the Last Glacial Maximum |
title_fullStr |
Extensive glaciation in Transbaikalia, Siberia, at the Last Glacial Maximum |
title_full_unstemmed |
Extensive glaciation in Transbaikalia, Siberia, at the Last Glacial Maximum |
title_sort |
extensive glaciation in transbaikalia, siberia, at the last glacial maximum |
publisher |
Research Online |
publishDate |
2016 |
url |
https://ro.uow.edu.au/smhpapers/3572 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=4595&context=smhpapers |
genre |
Ice cap Siberia |
genre_facet |
Ice cap Siberia |
op_source |
Faculty of Science, Medicine and Health - Papers: part A |
op_relation |
https://ro.uow.edu.au/smhpapers/3572 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=4595&context=smhpapers |
_version_ |
1766028561005674496 |