Climate and sea level forcing of terrigenous sediments input to the eastern Arabian Sea since the last glacial period

doi:10.1016/j.margeo.2022.106860

IOCAS-IR > 海洋地质与环境重点实验室

	Climate and sea level forcing of terrigenous sediments input to the eastern Arabian Sea since the last glacial period
	Cai, Mingjiang1,2 ; Colin, Christophe 3; Xu, Zhaokai 2,4,5,6; Wang, Wei 2,7; Cui, Yikun 8; Yu, Zhaojie 2; Zhang, Shanshan1,2 ; Sun, Hanjie 2; Li, Tiegang4,7,9
	2022-08-01
发表期刊	MARINE GEOLOGY
ISSN	0025-3227
卷号	450 页码:14
通讯作者	Xu, Zhaokai([email protected]) ; Li, Tiegang([email protected])
摘要	Analyses of mass accumulation rate (MAR), laser grain-size, clay mineralogy, and Sr-Nd isotopic compositions of < 2 mu m and < 63 mu m grain-size fractions have been applied to sediments from the International Ocean Dis-covery Program (IODP) Site U1456, which span the last 31 ka, in order to constrain (i) past changes in the relative proportions of the fine-grained detrital sediments derived from the Indus River and the Deccan Traps and the dynamics of sediment transport to the Laxmi Basin and (ii) past changes in Indian monsoon rainfall and latitudinal migration of Intertropical Convergence Zone since the last glacial period. Sr and Nd isotopes results combined with clay mineral assemblages suggest that clay-sized sediments at IODP Site U1456 derive mainly from the Indus River (70-90%), followed by a minor contribution from rivers draining the volcanic province of the Deccan Traps (10-30%). During the Last Glacial Maximum, clay mineralogy was dominated by illite and chlorite primarily derived from the highlands of the Indus River basin. The combination of lower temperatures and lower monsoonal rainfall during glacial times led to a reduction of smectite formation rates in the flood -plains, while glacial erosion accelerated in the Himalayan and Tibetan highlands leading to the release of large quantities of illite and chlorite minerals into the Arabian Sea. In addition, glacial low sea-level stands allowed a connection between river mouths and the heads of deep-sea channels favoring the southward transfer of sedi-ments to IODP Site U1456 by turbidity currents. Each maximum of the summer insolation curve, associated with a northward shift of the ITCZ and an intensification of summer monsoon rainfall (from 31 to 25 ka BP and from 12 to 8 cal ka BP), was associated with enhanced rainfall in the Indus floodplain which in turn led to an increase in the physical erosion and weathering of plain soils, which were rich in pedogenic minerals (such as smectite), and/or a higher production rate of smectite in the soils of the Indus floodplain. A compilation of three Nd isotopic composition records obtained at sites located on a N-S latitudinal transect in the eastern Arabian Sea have allowed us to establish the impact of sea level variations and latitudinal migration of the ITCZ over time on the sedimentation of the eastern Arabian Sea.
关键词	Sr and Nd isotopes Clay mineralogy Indus River Deccan Traps Indian Monsoon Sea level
DOI	10.1016/j.margeo.2022.106860
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000]; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB40010100]; Natural Science Foundation of Fujian Province[2022J05228]; National Natural Science Foundation of China[41876034]; National Natural Science Foundation of China[41676038]; National Natural Science Foundation of China[41830539]; National Natural Science Foundation of China[41876041]; Qingdao National Laboratory for Marine Science and Technology[2016ASKJ13]; Fujian Provincial Department of Educational Project[JAT210304]; Taishan Scholars Project; China Scholarship Council
WOS研究方向	Geology ; Oceanography
WOS类目	Geosciences, Multidisciplinary ; Oceanography
WOS记录号	WOS:000833928800001
出版者	ELSEVIER
引用统计	被引频次：4[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/337002/179852
专题	海洋地质与环境重点实验室
通讯作者	Xu, Zhaokai; Li, Tiegang
作者单位	1.Quanzhou Normal Univ, Sch Resources & Environm Sci, Quanzhou 362000, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 3.Univ Paris Saclay, CNRS, GEOPS, F-91405 Orsay, France 4.Lab Marine Geol, Pilot Natl Lab Marine Sci & Technol Qingdao, Qingdao 266061, Peoples R China 5.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 6.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 8.Nanjing Univ, Sch Geog & Ocean Sci, Collaborat Innovat Ctr South China Sea Studies, Nanjing 210023, Jiangsu, Peoples R China 9.Minist Nat Resources SOA, Inst Oceanog 1, Key Lab Marine Sedimentol & Metallogeny Environm G, Qingdao 266061, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Cai, Mingjiang,Colin, Christophe,Xu, Zhaokai,et al. Climate and sea level forcing of terrigenous sediments input to the eastern Arabian Sea since the last glacial period[J]. MARINE GEOLOGY,2022,450:14.
APA	Cai, Mingjiang.,Colin, Christophe.,Xu, Zhaokai.,Wang, Wei.,Cui, Yikun.,...&Li, Tiegang.(2022).Climate and sea level forcing of terrigenous sediments input to the eastern Arabian Sea since the last glacial period.MARINE GEOLOGY,450,14.
MLA	Cai, Mingjiang,et al."Climate and sea level forcing of terrigenous sediments input to the eastern Arabian Sea since the last glacial period".MARINE GEOLOGY 450(2022):14.