Sedimentary Records of High-Mountain Lakes in Arid Russian Altai: First Results of Studies (Last Glacial Maximum-Holocene)
Sedimentary sequences up to 4.71 m thick and up to similar to 24 ka were made by drilling the bottom sediments in three lakes of the Boguty depression. This is the highest mountain (2390-2470 m a.s.l.) and longest sedimentary record for the neighboring areas of Altai, Tuva, and Mongolia, which refle...
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Language: | English |
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MAIK NAUKA/INTERPERIODICA/SPRINGER
2023
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Online Access: | http://ir.gig.ac.cn/handle/344008/75882 https://doi.org/10.1134/S1028334X23602626 |
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ftchacadscgigcas:oai:ir.gig.ac.cn:344008/75882 2024-09-30T14:44:56+00:00 Sedimentary Records of High-Mountain Lakes in Arid Russian Altai: First Results of Studies (Last Glacial Maximum-Holocene) Agatova, A. R. Nepop, R. K. Shchetnikov, A. A. Krainov, M. A. Ivanov, E. V. Filinov, I. A. Ding, P. Yi-G, Xu 2023-11-29 http://ir.gig.ac.cn/handle/344008/75882 https://doi.org/10.1134/S1028334X23602626 英语 eng MAIK NAUKA/INTERPERIODICA/SPRINGER DOKLADY EARTH SCIENCES http://ir.gig.ac.cn/handle/344008/75882 doi:10.1134/S1028334X23602626 Geology lacustrine sediments depth-age model freshwater reservoir effect analytical methods Last Glacial Maximum Holocene Russian Altai Geosciences Multidisciplinary EASTERN ALTAI DYNAMICS 期刊论文 2023 ftchacadscgigcas https://doi.org/10.1134/S1028334X23602626 2024-09-16T14:26:10Z Sedimentary sequences up to 4.71 m thick and up to similar to 24 ka were made by drilling the bottom sediments in three lakes of the Boguty depression. This is the highest mountain (2390-2470 m a.s.l.) and longest sedimentary record for the neighboring areas of Altai, Tuva, and Mongolia, which reflects the course of natural processes in the highest and most arid part of Russian Altai from the Last Glacial Maximum until the present day. As early as in the first stage of this study, the reservoir effect for moraine-dammed Upper Boguty Lake is estimated at 290 years for the present and 1.2 and 1.3 ka for the boundaries at similar to 5.7 and similar to 9.6 ka, respectively. Using a complex of analytical methods, the sedimentological transition zone between the Late Pleistocene glacial-lacustrine clays and the Holocene biogenic-terrigenous silts is identified at 16-13 ka ago; the size of glaciers in MIS-2 and in the Younger Dryas, as well as the time of formation of thermokarst lakes (no later than 8.7 ka), within the upper terminal moraine complex is established. Widespread tree vegetation in the now treeless Boguty depression in the first third of the Holocene is confirmed. Report Thermokarst Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences) Tuva ENVELOPE(12.506,12.506,65.215,65.215) Doklady Earth Sciences 514 1 140 148 |
institution |
Open Polar |
collection |
Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchacadscgigcas |
language |
English |
topic |
Geology lacustrine sediments depth-age model freshwater reservoir effect analytical methods Last Glacial Maximum Holocene Russian Altai Geosciences Multidisciplinary EASTERN ALTAI DYNAMICS |
spellingShingle |
Geology lacustrine sediments depth-age model freshwater reservoir effect analytical methods Last Glacial Maximum Holocene Russian Altai Geosciences Multidisciplinary EASTERN ALTAI DYNAMICS Agatova, A. R. Nepop, R. K. Shchetnikov, A. A. Krainov, M. A. Ivanov, E. V. Filinov, I. A. Ding, P. Yi-G, Xu Sedimentary Records of High-Mountain Lakes in Arid Russian Altai: First Results of Studies (Last Glacial Maximum-Holocene) |
topic_facet |
Geology lacustrine sediments depth-age model freshwater reservoir effect analytical methods Last Glacial Maximum Holocene Russian Altai Geosciences Multidisciplinary EASTERN ALTAI DYNAMICS |
description |
Sedimentary sequences up to 4.71 m thick and up to similar to 24 ka were made by drilling the bottom sediments in three lakes of the Boguty depression. This is the highest mountain (2390-2470 m a.s.l.) and longest sedimentary record for the neighboring areas of Altai, Tuva, and Mongolia, which reflects the course of natural processes in the highest and most arid part of Russian Altai from the Last Glacial Maximum until the present day. As early as in the first stage of this study, the reservoir effect for moraine-dammed Upper Boguty Lake is estimated at 290 years for the present and 1.2 and 1.3 ka for the boundaries at similar to 5.7 and similar to 9.6 ka, respectively. Using a complex of analytical methods, the sedimentological transition zone between the Late Pleistocene glacial-lacustrine clays and the Holocene biogenic-terrigenous silts is identified at 16-13 ka ago; the size of glaciers in MIS-2 and in the Younger Dryas, as well as the time of formation of thermokarst lakes (no later than 8.7 ka), within the upper terminal moraine complex is established. Widespread tree vegetation in the now treeless Boguty depression in the first third of the Holocene is confirmed. |
format |
Report |
author |
Agatova, A. R. Nepop, R. K. Shchetnikov, A. A. Krainov, M. A. Ivanov, E. V. Filinov, I. A. Ding, P. Yi-G, Xu |
author_facet |
Agatova, A. R. Nepop, R. K. Shchetnikov, A. A. Krainov, M. A. Ivanov, E. V. Filinov, I. A. Ding, P. Yi-G, Xu |
author_sort |
Agatova, A. R. |
title |
Sedimentary Records of High-Mountain Lakes in Arid Russian Altai: First Results of Studies (Last Glacial Maximum-Holocene) |
title_short |
Sedimentary Records of High-Mountain Lakes in Arid Russian Altai: First Results of Studies (Last Glacial Maximum-Holocene) |
title_full |
Sedimentary Records of High-Mountain Lakes in Arid Russian Altai: First Results of Studies (Last Glacial Maximum-Holocene) |
title_fullStr |
Sedimentary Records of High-Mountain Lakes in Arid Russian Altai: First Results of Studies (Last Glacial Maximum-Holocene) |
title_full_unstemmed |
Sedimentary Records of High-Mountain Lakes in Arid Russian Altai: First Results of Studies (Last Glacial Maximum-Holocene) |
title_sort |
sedimentary records of high-mountain lakes in arid russian altai: first results of studies (last glacial maximum-holocene) |
publisher |
MAIK NAUKA/INTERPERIODICA/SPRINGER |
publishDate |
2023 |
url |
http://ir.gig.ac.cn/handle/344008/75882 https://doi.org/10.1134/S1028334X23602626 |
long_lat |
ENVELOPE(12.506,12.506,65.215,65.215) |
geographic |
Tuva |
geographic_facet |
Tuva |
genre |
Thermokarst |
genre_facet |
Thermokarst |
op_relation |
DOKLADY EARTH SCIENCES http://ir.gig.ac.cn/handle/344008/75882 doi:10.1134/S1028334X23602626 |
op_doi |
https://doi.org/10.1134/S1028334X23602626 |
container_title |
Doklady Earth Sciences |
container_volume |
514 |
container_issue |
1 |
container_start_page |
140 |
op_container_end_page |
148 |
_version_ |
1811645917936222208 |