Assemblage characteristics of clay minerals and its implications to evolution of eolian dust input to the Parece Vela Basin since 1.95 Ma

IOCAS-IR

	Assemblage characteristics of clay minerals and its implications to evolution of eolian dust input to the Parece Vela Basin since 1.95 Ma
	Ming J(明洁); Li AC(李安春); Huang J(黄杰); Wan SM(万世明); Meng QY(孟庆勇); Jiang FQ(蒋富清); Yan WW(闫文文)
发表期刊	Chinese Journal of Oceanology and Limnology
ISSN	0254-4059
	2014-01-15
出版年	2014
卷号	v.32 期号:01 页码:176-188
文献类型	CNKI期刊论文
摘要	To understand the provenance and evolution of eolian input in the last 1.95 Ma in the Parece Vela Basin in the eastern Philippine Sea, the clay mineral assemblage of a gravity core PV090510 from the basin was investigated using paleogeomagnetic dating and X-ray diffraction. The assemblage of the core mainly consisted of smectite(~46%) and illite(~40%), with some chlorite(~10%) and kaolinite(~4%). Analysis of the provenance of these minerals suggested that smectite was mainly derived from volcanic rocks of the Mariana Arc, while illite, chlorite, and kaolinite were mainly transported as eolian dust by the East Asian monsoon from central Asia. We used the ratio of(illite+chlorite+kaolinite)/smectite as a proxy for Asian eolian input to the Parece Vela Basin since 1.95 Ma. This ratio followed glacial and interglacial cycles and was consistent with the intensity of the East Asian monsoon and aridity of central Asia since 1.95 Ma. The changes of the ratio refl ected three different stages of the East Asian monsoon and provenance climate.
关键词	eolian dust East Asian winter monsoon clay mineral provenance Parece Vela Basin
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A010;A011;
CNKI专题名称	海洋学;地质学;
分类号	P736.22
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	Supported by the National Basic Research Program of China(973 Program)(No.2007CB411703) ; the National Natural Science Foundation of China(No.40976026)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/190589
专题	中国科学院海洋研究所
作者单位	1.KeyLaboratoryofMarineGeologyandEnvironment,InstituteofOceanology,ChineseAcademyofSciences 2.UniversityofChineseAcademyofSciences 3.FirstInstituteofOceanography,StateOceanicAdministration
推荐引用方式 GB/T 7714	Ming J,Li AC,Huang J,et al. Assemblage characteristics of clay minerals and its implications to evolution of eolian dust input to the Parece Vela Basin since 1.95 Ma. 2014.