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Rock magnetic record of late Neogene red clay sediments from the Chinese Loess Plateau and its implications for East Asian monsoon evolution

文献类型：期刊论文

作者Song, Yougui2; Fang, Xiaomin6; Chen, Xiuling7; Torii, Masayuki1; Ishikawa, Naoto5; Zhang, Maosheng4; Yang, Shengli3; Chan, Hong2
刊名PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
出版日期2018-12-01
卷号510页码:109-123
关键词Late Miocene Pliocene Global cooling Tectonic events Magnetic minerals
ISSN号0031-0182
DOI10.1016/j.palaeo.2017.09.025
通讯作者Song, Yougui(ygsong@loess.llqg.ac.cn)
英文摘要The Quaternary loess-paleosol and underlying Neogene red clay sequences on the Chinese Loess Plateau (CLP) contain a remarkable continental record of past East Asian monsoon changes and aridification of the Asian interior. While monsoon variability during the Quaternary is reasonably well understood, the evolution and dynamics of the monsoon during the Neogene are still debated. The rock magnetism of aeolian sediments is a well-established tool for reconstructing the palaeoclimatic history of Asia. Here, we present a rock magnetic record from Late Neogene red clay sediments of the Chaona section in the central CLP. The results indicate that the main magnetic minerals in the red clay are magnetite, maghemite, hematite and goethite, similar to the overlying Quaternary loess-palaeosol sequences. The high-resolution rock magnetic record, combined with the results of other proxies, demonstrate a stepwise intensification of the summer monsoon and a progressive enhancement of the winter monsoon in East Asia during the Late Neogene. Based on the results, the climatic evolution of East Asia can be divided into three intervals: Interval III, from 8.1 to 6.8 Ma, is characterized by a cool, dry climate with a relatively weak East Asian Summer Monsoon (EASM) and East Asian Winter Monsoon (EAWM); Interval II, from 6.8 to 4.3 Ma, is characterized by cool/warm cycles; and Interval I, from 4.3 to 2.8/2.6 Ma, was warm and humid, and within which the EASM strengthened rapidly and the EAWM fluctuated considerably, with an increasing trend. We infer that before 4.3 Ma the variations of both the EASM and EAWM were closely related to global cooling and that the intensified EASM during the late Pliocene was primarily caused by tectonic events, including the gradual closure of the Panama Seaway and the uplift of the Tibetan Plateau, rather than by global cooling.
WOS关键词LATE CENOZOIC UPLIFT ; ANTARCTIC ICE-SHEET ; GRAIN-SIZE RECORDS ; LATE MIOCENE ; TIBETAN PLATEAU ; PALEOCLIMATIC SIGNIFICANCE ; SUMMER MONSOON ; MODERN SOILS ; LIUPAN-SHAN ; LOESS/PALAEOSOL SEQUENCES
资助项目Natural Science Foundation of China (NSFC)[41290253] ; Natural Science Foundation of China (NSFC)[41572162] ; Natural Science Foundation of China (NSFC)[41472147] ; Xi'an Centre of Geological Survey, CGS[[2017]0438] ; International partnership Program of Chinese Academy of Sciences (CAS)[132B61KYS20160002] ; Scientific and Technological Innovation Team of CAS[CAS Renzi (2013)47]
WOS研究方向Physical Geography ; Geology ; Paleontology
语种英语
WOS记录号WOS:000452585100011
出版者ELSEVIER SCIENCE BV
资助机构Natural Science Foundation of China (NSFC) ; Xi'an Centre of Geological Survey, CGS ; International partnership Program of Chinese Academy of Sciences (CAS) ; Scientific and Technological Innovation Team of CAS
源URL[http://ir.ieecas.cn/handle/361006/14486]  
专题地球环境研究所_古环境研究室
通讯作者Song, Yougui
作者单位1.Okayama Univ Sci, Fac Informat, Okayama 7000005, Japan
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China
3.Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Gansu, Peoples R China
4.Minist Land & Resources China, Xian Ctr Geol Survey, Key Lab Geohazard Loess Area, Xian 710054, Shaanxi, Peoples R China
5.Kyoto Univ, Grad Sch Human & Environm Studies, Kyoto 6068501, Japan
6.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China
7.Fujian Normal Univ, Coll Geog Sci, Inst Geog, Fuzhou 350007, Fujian, Peoples R China
推荐引用方式
GB/T 7714		 Song, Yougui,Fang, Xiaomin,Chen, Xiuling,et al. Rock magnetic record of late Neogene red clay sediments from the Chinese Loess Plateau and its implications for East Asian monsoon evolution[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2018,510:109-123.
APA Song, Yougui.,Fang, Xiaomin.,Chen, Xiuling.,Torii, Masayuki.,Ishikawa, Naoto.,...&Chan, Hong.(2018).Rock magnetic record of late Neogene red clay sediments from the Chinese Loess Plateau and its implications for East Asian monsoon evolution.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,510,109-123.
MLA Song, Yougui,et al."Rock magnetic record of late Neogene red clay sediments from the Chinese Loess Plateau and its implications for East Asian monsoon evolution".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 510(2018):109-123.

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来源：地球环境研究所

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