Climate Change and Drought Events in the Geochemical Records of the Lacustrine Deposits in the Southeastern Tibetan Plateau
Lacustrine deposits at the margin of the southeastern Tibetan Plateau (SETP) are sensitive indicators for the evolution of the southwest Asian monsoon (SWAM) during the Quaternary. Thus, they can provide insight into the Quaternary climatic history and their relationship with global climatic changes...
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ftpubmed:oai:pubmedcentral.nih.gov:5199098 2023-05-15T17:34:16+02:00 Climate Change and Drought Events in the Geochemical Records of the Lacustrine Deposits in the Southeastern Tibetan Plateau Zhang, Wenxiang Ming, Qingzhong Shi, Zhengtao Niu, Jie Su, Huai 2016-12-29 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5199098/ http://www.ncbi.nlm.nih.gov/pubmed/28033377 https://doi.org/10.1371/journal.pone.0168928 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5199098/ http://www.ncbi.nlm.nih.gov/pubmed/28033377 http://dx.doi.org/10.1371/journal.pone.0168928 © 2016 Zhang et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2016 ftpubmed https://doi.org/10.1371/journal.pone.0168928 2017-01-22T01:01:13Z Lacustrine deposits at the margin of the southeastern Tibetan Plateau (SETP) are sensitive indicators for the evolution of the southwest Asian monsoon (SWAM) during the Quaternary. Thus, they can provide insight into the Quaternary climatic history and their relationship with global climatic changes. The results of the geochemical analysis of the Xiaozhongdian Basin section at the SETP suggest that SiO2 had the highest content of the major elements followed by Al2O3. The order of the abundance of the major elements was generally as follows: SiO2>Al2O3>Fe2O3>CaO>MgO>K2O>TiO2>Na2O>MnO2. The geochemical proxies, such as chemical index of alteration (CIA), the index of compositional variability (ICV) and (CaO+K2O+Na2O)/Al2O3, indicate the weak chemical weathering and the aridification of the margin of the SETP during the Heinrich events. In addition, the aridification of the SETP during the Heinrich events may be closely related to the cold signals transmitted from the high latitudes of the North Atlantic to the TP, and the effect caused the cooling effect to be very strong on the TP as a result of the upper-level westerly jet stream and then reduced the suction action associated with the SWAM, thus accelerating the drying rate of Xiaozhongdian Basin, which was amplifying the degree of drought in Heinrich events. Text North Atlantic PubMed Central (PMC) PLOS ONE 11 12 e0168928 |
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Research Article Zhang, Wenxiang Ming, Qingzhong Shi, Zhengtao Niu, Jie Su, Huai Climate Change and Drought Events in the Geochemical Records of the Lacustrine Deposits in the Southeastern Tibetan Plateau |
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Lacustrine deposits at the margin of the southeastern Tibetan Plateau (SETP) are sensitive indicators for the evolution of the southwest Asian monsoon (SWAM) during the Quaternary. Thus, they can provide insight into the Quaternary climatic history and their relationship with global climatic changes. The results of the geochemical analysis of the Xiaozhongdian Basin section at the SETP suggest that SiO2 had the highest content of the major elements followed by Al2O3. The order of the abundance of the major elements was generally as follows: SiO2>Al2O3>Fe2O3>CaO>MgO>K2O>TiO2>Na2O>MnO2. The geochemical proxies, such as chemical index of alteration (CIA), the index of compositional variability (ICV) and (CaO+K2O+Na2O)/Al2O3, indicate the weak chemical weathering and the aridification of the margin of the SETP during the Heinrich events. In addition, the aridification of the SETP during the Heinrich events may be closely related to the cold signals transmitted from the high latitudes of the North Atlantic to the TP, and the effect caused the cooling effect to be very strong on the TP as a result of the upper-level westerly jet stream and then reduced the suction action associated with the SWAM, thus accelerating the drying rate of Xiaozhongdian Basin, which was amplifying the degree of drought in Heinrich events. |
format |
Text |
author |
Zhang, Wenxiang Ming, Qingzhong Shi, Zhengtao Niu, Jie Su, Huai |
author_facet |
Zhang, Wenxiang Ming, Qingzhong Shi, Zhengtao Niu, Jie Su, Huai |
author_sort |
Zhang, Wenxiang |
title |
Climate Change and Drought Events in the Geochemical Records of the Lacustrine Deposits in the Southeastern Tibetan Plateau |
title_short |
Climate Change and Drought Events in the Geochemical Records of the Lacustrine Deposits in the Southeastern Tibetan Plateau |
title_full |
Climate Change and Drought Events in the Geochemical Records of the Lacustrine Deposits in the Southeastern Tibetan Plateau |
title_fullStr |
Climate Change and Drought Events in the Geochemical Records of the Lacustrine Deposits in the Southeastern Tibetan Plateau |
title_full_unstemmed |
Climate Change and Drought Events in the Geochemical Records of the Lacustrine Deposits in the Southeastern Tibetan Plateau |
title_sort |
climate change and drought events in the geochemical records of the lacustrine deposits in the southeastern tibetan plateau |
publisher |
Public Library of Science |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5199098/ http://www.ncbi.nlm.nih.gov/pubmed/28033377 https://doi.org/10.1371/journal.pone.0168928 |
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North Atlantic |
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North Atlantic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5199098/ http://www.ncbi.nlm.nih.gov/pubmed/28033377 http://dx.doi.org/10.1371/journal.pone.0168928 |
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© 2016 Zhang et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
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https://doi.org/10.1371/journal.pone.0168928 |
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