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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
Song, YG (Song, Yougui)1; Fang, XM (Fang, Xiaomin)2; Chen, XL (Chen, Xiuling)3; Torii, M (Torii, Masayuki)4; Ishikawa, N (Ishikawa, Naoto)5; Zhang, MS (Zhang, Maosheng)6; Yang, SL (Yang, Shengli)7; Chan, H (Chan, Hong)1
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
2018-12-01
Volume510Issue:特刊:ISPages:109-123
DOI10.1016/j.palaeo.2017.09.025
Abstract

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.

Subject Area地质学
WOS IDWOS:000452585100011
Language英语
Indexed BySCIE
KeywordLate Cenozoic Uplift Antarctic Ice-sheet Grain-size Records Late Miocene Tibetan Plateau Paleoclimatic Significance Summer Monsoon Modern Soils Liupan-shan Loess/palaeosol Sequences
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
Cooperation Status国际
ISSN0031-0182
Department大陆碰撞与高原隆升重点实验室
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8490
Collection图书馆
Corresponding AuthorSong, YG (Song, Yougui)
Affiliation1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China;
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China;
3.Fujian Normal Univ, Coll Geog Sci, Inst Geog, Fuzhou 350007, Fujian, Peoples R China;
4.Okayama Univ Sci, Fac Informat, Okayama 7000005, Japan;
5.Kyoto Univ, Grad Sch Human & Environm Studies, Kyoto 6068501, Japan;
6.Minist Land & Resources China, Xian Ctr Geol Survey, Key Lab Geohazard Loess Area, Xian 710054, Shaanxi, Peoples R China;
7.Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Gansu, Peoples R China.
Recommended Citation
GB/T 7714
Song, YG ,Fang, XM ,Chen, XL ,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(特刊:IS):109-123.
APA Song, YG .,Fang, XM .,Chen, XL .,Torii, M .,Ishikawa, N .,...&Chan, H .(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(特刊:IS),109-123.
MLA Song, YG ,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.特刊:IS(2018):109-123.
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