Marine Oxygen Isotope Stage(MIS)-6 Glacial Advances on the Tibetan Plateau More Extensive than during MIS-2 due to More Abundant Precipitation

作     者：Marie-Luce CHEVALIER WANG Shiguang Anne REPLUMAZ LI Haibing Marie-Luce CHEVALIER;WANG Shiguang;Anne REPLUMAZ;LI Haibing

作者机构：Key Laboratory of Deep-Earth Dynamics of Ministry of Natural ResourcesInstitute of GeologyCAGSBeijing 100037China Jiangsu Donghai Crustal Activity in Deep Holes of the Continental Scientific Drilling National Observation and Research StationLianyungangJiangsu 222300China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou)Guangzhou 511458China National Institute of Natural HazardsMEMCBeijing 100037China ISTerreUniversitéGrenoble AlpesCNRSGrenoble 38610France 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2022年第96卷第5期

页      面：1484-1494页

核心收录：

学科分类：070902[理学-地球化学] 0709[理学-地质学] 07[理学] 0705[理学-地理学] 070501[理学-自然地理学] 

基　　金：financially supported by the Second Tibetan Plateau Scientific Expedition of the Ministry of Science and Technology of China(Grant No.2019QZKK0901) the National Natural Science Foundation of China(Grant Nos.42020104007,41941016) the China Geological Survey(Grant No.DD20221630) 

主　　题：Yadong rift southern Tibet cosmogenic isotopes Quaternary paleo-precipitation moraine morphology Indian monsoon 

摘      要：Numerous studies dated glacial deposits within the Himalayan-Tibetan *** most focus on young deposits,i.e.,younger than the Last Glacial Maximum(LGM or Marine oxygen Isotope Stage(MIS)-2,~20 ka),older moraines such as those from MIS-6(~130–191 ka)are much harder to date and interpret due to the less well-preserved nature of their surfaces and boulders,as well as their scattered and continuous age distribution due to long-lived erosion since ***,we dated with~(10)Be,two imbricated moraines near Yadong in southern Tibet,as MIS-2 and 6,showing that the most extensive,smooth surfaces were abandoned during *** published data from 54 MIS-6 moraines on the Tibetan Plateau reveals that they exist in most regions,dry or *** are particularly well-preserved(sharp crests)in eastern and northern Tibet,while in southern and central Tibet,their crests are rounded to *** both MIS-2 and 6 were equally cold,and because MIS-6 moraines are much more extensive than those from the LGM,we conclude that MIS-6 glacial advances were controlled by more abundant precipitation than during *** would be consistent with the peak in Asian monsoon during MIS-6,revealed by sediments from the South China Sea.