Diagnostic heavy minerals in Plio-Pleistocene sediments of the Yangtze Coast, China with special reference to the Yangtze River connection into the sea

doi:10.1016/j.geomorph.2009.03.010

	Diagnostic heavy minerals in Plio-Pleistocene sediments of the Yangtze Coast, China with special reference to the Yangtze River connection into the sea
	Chen, Jing 2,3; Wang, Zhanghua 1; Chen, Zhongyuan 1; Wei, Zixin 4; Wei, Taoyuan 1; Wei, Wei 5
刊名	GEOMORPHOLOGY
	2009-12-15
卷号	113 期号:3-4 页码:129-136
关键词	Tectonics-climate coupling Sediment source tracing Heavy minerals Qingzang plateau
ISSN号	0169-555X
DOI	10.1016/j.geomorph.2009.03.010
英文摘要	This present study revealed five heavy mineral zones in the Yangtze coastal borehole sediments. Ilmenite, garnet and zircon suite of Zone I of the Pliocene characterizes the derivation of basaltic bedrock and local andesitic-granitic rocks. Indicative limonite in the Zone I sediments formed as alluvial fan facies shows strong chemical weathering. The assemblage of amphibole, straurolite, kyanite and idocrase of metamorphic derivation, together with a few zircon and tourmaline of andesitic-granitic origin in Zone 11, represents the extension of sediment sources to the lower and middle Yangtze basin in Early Pleistocene as the study area subsided. Also, the braided to meandering riverine facies demonstrates a longer distance sediment transport. Few heavy minerals remained in Zone III of Mid-Pleistocene, when mottled thicker stiff mud occurred as the lacustrine facies, suggesting a quasi-coastal floodplain with lower capability of sediment transport. Heavy minerals appeared significant and continuous in Zone IV of Late Pleistocene, when changing to the shallow marine facies, inferring much extended sediment sources to the upper Yangtze. Hypersthene, identified primarily in Zone IV, was closely associated with the Er-Mei Mountain tholeiite basalt of the upper Yangtze. Heavy minerals of Zone V remained almost the same as IV during Holocene, when the modern delta evolved. The heavy minerals suggested the timing of the Yangtze connection to the sea at ca 0.12 Ma BP. (C) 2009 Elsevier B.V. All rights reserved.
资助项目	Key Laboratory of Marine Sedimentology & Environmental Geology, SOA[MASEG200609]
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000272435900002
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/4368]
专题	自然资源部第一海洋研究所
作者单位	1.E China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200062, Peoples R China; 2.E China Normal Univ, Dept Geog, Shanghai 200062, Peoples R China; 3.SOA, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China; 4.Shanghai Inst Geol Survey, Shanghai 200072, Peoples R China; 5.Beijing Univ, Sch Earth & Space Sci, Beijing 1000871, Peoples R China
推荐引用方式 GB/T 7714	Chen, Jing,Wang, Zhanghua,Chen, Zhongyuan,et al. Diagnostic heavy minerals in Plio-Pleistocene sediments of the Yangtze Coast, China with special reference to the Yangtze River connection into the sea[J]. GEOMORPHOLOGY,2009,113(3-4):129-136.
APA	Chen, Jing,Wang, Zhanghua,Chen, Zhongyuan,Wei, Zixin,Wei, Taoyuan,&Wei, Wei.(2009).Diagnostic heavy minerals in Plio-Pleistocene sediments of the Yangtze Coast, China with special reference to the Yangtze River connection into the sea.GEOMORPHOLOGY,113(3-4),129-136.
MLA	Chen, Jing,et al."Diagnostic heavy minerals in Plio-Pleistocene sediments of the Yangtze Coast, China with special reference to the Yangtze River connection into the sea".GEOMORPHOLOGY 113.3-4(2009):129-136.