Distribution and timing of Holocene and late Pleistocene glacier fluctuations in western Mongolia
Despite being a key location for paleoglaciological research in north-central Asia, with the largest number of modern and Pleistocene glaciers, and in the transition zone between the humid Russian Altai and dry Gobi Altai, little is known about the precise extent and timing of Holocene and late Plei...
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Cambridge University Press
2016
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ftdoajarticles:oai:doaj.org/article:2c7b42a823974b05bcf78cdb5b872d4b 2023-05-15T13:29:28+02:00 Distribution and timing of Holocene and late Pleistocene glacier fluctuations in western Mongolia Frank Lehmkuhl Michael Klinge Henrik Rother Daniela Hülle 2016-01-01T00:00:00Z https://doi.org/10.3189/2016AoG71A030 https://doaj.org/article/2c7b42a823974b05bcf78cdb5b872d4b EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0260305500000185/type/journal_article https://doaj.org/toc/0260-3055 https://doaj.org/toc/1727-5644 doi:10.3189/2016AoG71A030 0260-3055 1727-5644 https://doaj.org/article/2c7b42a823974b05bcf78cdb5b872d4b Annals of Glaciology, Vol 57, Pp 169-178 (2016) glacial geomorphology glacier fluctuations glacier mapping mountain glaciers paleo-climate Meteorology. Climatology QC851-999 article 2016 ftdoajarticles https://doi.org/10.3189/2016AoG71A030 2023-03-12T01:31:57Z Despite being a key location for paleoglaciological research in north-central Asia, with the largest number of modern and Pleistocene glaciers, and in the transition zone between the humid Russian Altai and dry Gobi Altai, little is known about the precise extent and timing of Holocene and late Pleistocene glaciations in western Mongolia. Here we present detailed information on the distribution of modern and late Holocene glaciers, and new results addressing the geomorphological differentiation and numerical dating (by optically stimulated luminescence, OSL) of Pleistocene glacial sequences in these areas. For the Mongolian Altai, geochronological results suggest large ice advances correlative to marine isotope stages (MIS) 4 and 2. This is in contrast to results from the Khangai mountains, central Mongolia, showing that significant ice advances additionally occurred during MIS3. During the Pleistocene, glacial equilibrium-line altitudes (ELAs) were ~500 to >1000m lower in the more humid portion of the Russian and western Mongolian Altai, compared to 300-600 m in the drier ranges of the eastern Mongolian Altai. Pleistocene ELAs in the Khangai mountains were depressed by 700-1000 m, suggesting more humid conditions at times of major glaciation than in the eastern Mongolian Altai. This paleo-ELA pattern reveals that the precipitation gradient from the drier to the more humid regions was more pronounced during glacial times than at present. Article in Journal/Newspaper Annals of Glaciology Directory of Open Access Journals: DOAJ Articles Ela ENVELOPE(9.642,9.642,63.170,63.170) Annals of Glaciology 57 71 169 178 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
glacial geomorphology glacier fluctuations glacier mapping mountain glaciers paleo-climate Meteorology. Climatology QC851-999 |
spellingShingle |
glacial geomorphology glacier fluctuations glacier mapping mountain glaciers paleo-climate Meteorology. Climatology QC851-999 Frank Lehmkuhl Michael Klinge Henrik Rother Daniela Hülle Distribution and timing of Holocene and late Pleistocene glacier fluctuations in western Mongolia |
topic_facet |
glacial geomorphology glacier fluctuations glacier mapping mountain glaciers paleo-climate Meteorology. Climatology QC851-999 |
description |
Despite being a key location for paleoglaciological research in north-central Asia, with the largest number of modern and Pleistocene glaciers, and in the transition zone between the humid Russian Altai and dry Gobi Altai, little is known about the precise extent and timing of Holocene and late Pleistocene glaciations in western Mongolia. Here we present detailed information on the distribution of modern and late Holocene glaciers, and new results addressing the geomorphological differentiation and numerical dating (by optically stimulated luminescence, OSL) of Pleistocene glacial sequences in these areas. For the Mongolian Altai, geochronological results suggest large ice advances correlative to marine isotope stages (MIS) 4 and 2. This is in contrast to results from the Khangai mountains, central Mongolia, showing that significant ice advances additionally occurred during MIS3. During the Pleistocene, glacial equilibrium-line altitudes (ELAs) were ~500 to >1000m lower in the more humid portion of the Russian and western Mongolian Altai, compared to 300-600 m in the drier ranges of the eastern Mongolian Altai. Pleistocene ELAs in the Khangai mountains were depressed by 700-1000 m, suggesting more humid conditions at times of major glaciation than in the eastern Mongolian Altai. This paleo-ELA pattern reveals that the precipitation gradient from the drier to the more humid regions was more pronounced during glacial times than at present. |
format |
Article in Journal/Newspaper |
author |
Frank Lehmkuhl Michael Klinge Henrik Rother Daniela Hülle |
author_facet |
Frank Lehmkuhl Michael Klinge Henrik Rother Daniela Hülle |
author_sort |
Frank Lehmkuhl |
title |
Distribution and timing of Holocene and late Pleistocene glacier fluctuations in western Mongolia |
title_short |
Distribution and timing of Holocene and late Pleistocene glacier fluctuations in western Mongolia |
title_full |
Distribution and timing of Holocene and late Pleistocene glacier fluctuations in western Mongolia |
title_fullStr |
Distribution and timing of Holocene and late Pleistocene glacier fluctuations in western Mongolia |
title_full_unstemmed |
Distribution and timing of Holocene and late Pleistocene glacier fluctuations in western Mongolia |
title_sort |
distribution and timing of holocene and late pleistocene glacier fluctuations in western mongolia |
publisher |
Cambridge University Press |
publishDate |
2016 |
url |
https://doi.org/10.3189/2016AoG71A030 https://doaj.org/article/2c7b42a823974b05bcf78cdb5b872d4b |
long_lat |
ENVELOPE(9.642,9.642,63.170,63.170) |
geographic |
Ela |
geographic_facet |
Ela |
genre |
Annals of Glaciology |
genre_facet |
Annals of Glaciology |
op_source |
Annals of Glaciology, Vol 57, Pp 169-178 (2016) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0260305500000185/type/journal_article https://doaj.org/toc/0260-3055 https://doaj.org/toc/1727-5644 doi:10.3189/2016AoG71A030 0260-3055 1727-5644 https://doaj.org/article/2c7b42a823974b05bcf78cdb5b872d4b |
op_doi |
https://doi.org/10.3189/2016AoG71A030 |
container_title |
Annals of Glaciology |
container_volume |
57 |
container_issue |
71 |
container_start_page |
169 |
op_container_end_page |
178 |
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1766000826974732288 |