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A rock magnetic record of Asian cooling and aridification processes during 1.95-0.40 Ma in the southeastern Chinese Loess Plateau
[Wu Yi] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China; [Wu Yi; Zhu ZhaoYu; Qiu ShiFan] Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Marginal Sea Geol, Guangzhou 510640, Guangdong, Peoples R China; [Rao ZhiGuo] Lanzhou Univ, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China; zhuzy@gig.ac.cn
2013
发表期刊CHINESE SCIENCE BULLETIN
ISSN1001-6538
卷号58期号:30页码:3636-3644
摘要The southeastern Chinese Loess Plateau is the terminal deposition area of dusts transported by the East Asian winter monsoon and the frontal area penetrated by the East Asian summer monsoon, and thus a climate sensitive region. This paper reports a rock magnetic study of a Quaternary loess-paleosol section in such a region. We tried to reconstruct the paleoclimate evolution history in the region during 1.95-0.40 Ma with magnetic parameters. The results show a general up-section decreasing trend of the ratio of HIRM/(SIRM-IRM100 mT), indicating a long-term decreasing trend of hematite coercivities in the deposits, which can be mainly related to the cooling and aridification trend of the environment in interglacial depositional area and glacial dust source region. The ratio, chi (lf)/chi (ARM), widely used to reflect the variations of magnetic mineral grain size, manifests a long-term increasing trend of the magnetic mineral grain size and tends to indicate an overall weakening trend of the East Asian summer monsoon that controlled the pedogenic intensity. Although the regional multi-segmented paleoclimatic records revealed by several magnetic parameters in our study, the long-term Asian cooling and aridification trend inferred here is of global correlation significance.
部门归属海洋地质
关键词Chinese Loess Plateau Eolian Deposits Hematite Paleoclimate Environmental Magnetism
学科领域Multidisciplinary Sciences
资助者This work was supported by the National Basic Research Program of China (2010CB833405) and the National Natural Science Foundation of China (41102115 and 40930106). The authors are grateful to two anonymous referees for critical comments and valuable suggestions and Dr. Tan Xiaodong for polishing English. ; This work was supported by the National Basic Research Program of China (2010CB833405) and the National Natural Science Foundation of China (41102115 and 40930106). The authors are grateful to two anonymous referees for critical comments and valuable suggestions and Dr. Tan Xiaodong for polishing English. ; This work was supported by the National Basic Research Program of China (2010CB833405) and the National Natural Science Foundation of China (41102115 and 40930106). The authors are grateful to two anonymous referees for critical comments and valuable suggestions and Dr. Tan Xiaodong for polishing English. ; This work was supported by the National Basic Research Program of China (2010CB833405) and the National Natural Science Foundation of China (41102115 and 40930106). The authors are grateful to two anonymous referees for critical comments and valuable suggestions and Dr. Tan Xiaodong for polishing English.
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语种英语
资助者This work was supported by the National Basic Research Program of China (2010CB833405) and the National Natural Science Foundation of China (41102115 and 40930106). The authors are grateful to two anonymous referees for critical comments and valuable suggestions and Dr. Tan Xiaodong for polishing English. ; This work was supported by the National Basic Research Program of China (2010CB833405) and the National Natural Science Foundation of China (41102115 and 40930106). The authors are grateful to two anonymous referees for critical comments and valuable suggestions and Dr. Tan Xiaodong for polishing English. ; This work was supported by the National Basic Research Program of China (2010CB833405) and the National Natural Science Foundation of China (41102115 and 40930106). The authors are grateful to two anonymous referees for critical comments and valuable suggestions and Dr. Tan Xiaodong for polishing English. ; This work was supported by the National Basic Research Program of China (2010CB833405) and the National Natural Science Foundation of China (41102115 and 40930106). The authors are grateful to two anonymous referees for critical comments and valuable suggestions and Dr. Tan Xiaodong for polishing English.
WOS记录号WOS:000325126500007
引用统计
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/11112
专题中科院边缘海地质重点实验室
通讯作者zhuzy@gig.ac.cn
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GB/T 7714
[Wu Yi] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China,[Wu Yi,Zhu ZhaoYu,et al. A rock magnetic record of Asian cooling and aridification processes during 1.95-0.40 Ma in the southeastern Chinese Loess Plateau[J]. CHINESE SCIENCE BULLETIN,2013,58(30):3636-3644.
APA [Wu Yi] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China,[Wu Yi,Zhu ZhaoYu,Qiu ShiFan] Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Marginal Sea Geol, Guangzhou 510640, Guangdong, Peoples R China,[Rao ZhiGuo] Lanzhou Univ, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China,&zhuzy@gig.ac.cn.(2013).A rock magnetic record of Asian cooling and aridification processes during 1.95-0.40 Ma in the southeastern Chinese Loess Plateau.CHINESE SCIENCE BULLETIN,58(30),3636-3644.
MLA [Wu Yi] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China,et al."A rock magnetic record of Asian cooling and aridification processes during 1.95-0.40 Ma in the southeastern Chinese Loess Plateau".CHINESE SCIENCE BULLETIN 58.30(2013):3636-3644.
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