Paleoclimatic evolution of the SW and NE South China Sea and its relationship with spectral reflectance data over various age scales

doi:10.1016/j.palaeo.2019.02.019

IOCAS-IR > 海洋地质与环境重点实验室

	Paleoclimatic evolution of the SW and NE South China Sea and its relationship with spectral reflectance data over various age scales
	Liu, Chang 1; Clift, Peter D.2,3; Giosan, Liviu 4; Miao, Yunfa 2,5; Warny, Sophie 2; Wan, Shiming 6
	2019-07-01
发表期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
卷号	525 页码:25-43
通讯作者	Liu, Chang(liu@iodp.tamu.edu)
摘要	Spectral analysis of sediment from International Ocean Discovery Program (IODP) Site U1433 in the South China Sea can be used to constrain humidity and temperature through time by constructing hematite/goethite records spanning the last 10 million years. Records in the southwest and northern parts of this basin show long-term contrasting trends, despite the fact that geochemical evidence for alteration is similar in both parts of the basin, i.e. towards less alteration since 10 Ma. However, contrasting clay mineral assemblages in the northern and southwestern areas do suggest long-term changes in the relative climate of Indochina and southern China. We interpret this to reflect the northward migration of the ITCZ since the Miocene resulting in a progressive drying of Indochina and increasingly wet conditions in South China. Sediment believed to be supplied from the Mekong River (IODP Site U1433) shows increasing chemical weathering at a time of long-term drying of the climate. This probably reflects increasing chemical weathering driven by slower transport and despite reduced rates of chemical alteration in the context of a colder, drier climate since the Miocene. In general hematite/goethite data are consistent with pollen constraints from the same drill site that show colder conditions with increasing hematite/goethite since 3 Ma and with a transition to apparently wetter conditions since the mid-Pleistocene transition (MPT). This implies that most of the sediment in the southwestern basin is weathered and eroded during warmer, wetter interglacial phases, at least since the MPT.
关键词	Hematite/Goethite Chemical weathering Intertropical convergence zone (ITCZ) IODP Exp. 349 Clay mineralogy Bulk geochemistry
DOI	10.1016/j.palaeo.2019.02.019
收录类别	SCI
语种	英语
资助项目	GSA Graduate Student Research grant ; USSSP ; Charles T. McCord Chair in Petroleum Geology at Louisiana State University ; GSA Graduate Student Research grant ; USSSP ; Charles T. McCord Chair in Petroleum Geology at Louisiana State University
WOS研究方向	Physical Geography ; Geology ; Paleontology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:000468711700003
出版者	ELSEVIER SCIENCE BV
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/161413
专题	海洋地质与环境重点实验室
通讯作者	Liu, Chang
作者单位	1.Texas A&M Univ, Int Ocean Discovery Program, College Stn, TX 77845 USA 2.Louisiana State Univ, Dept Geol & Geophys, Baton Rouge, LA 70803 USA 3.Yunnan Univ, Res Ctr Earth Syst Sci, Kunming, Yunnan, Peoples R China 4.Woods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA 02540 USA 5.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Liu, Chang,Clift, Peter D.,Giosan, Liviu,et al. Paleoclimatic evolution of the SW and NE South China Sea and its relationship with spectral reflectance data over various age scales[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2019,525:25-43.
APA	Liu, Chang,Clift, Peter D.,Giosan, Liviu,Miao, Yunfa,Warny, Sophie,&Wan, Shiming.(2019).Paleoclimatic evolution of the SW and NE South China Sea and its relationship with spectral reflectance data over various age scales.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,525,25-43.
MLA	Liu, Chang,et al."Paleoclimatic evolution of the SW and NE South China Sea and its relationship with spectral reflectance data over various age scales".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 525(2019):25-43.

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