气候变化领域集成服务门户(CCPortal): Early Cretaceous Gangdese retroarc foreland basin evolution in the Selin Co basin, central Tibet: evidence from sedimentology and detrital zircon geochronology

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DOI	10.1144/SP353.3
	Early Cretaceous Gangdese retroarc foreland basin evolution in the Selin Co basin, central Tibet: evidence from sedimentology and detrital zircon geochronology
	Zhang, Qing-Hai; Ding, Lin; Cai, Fu-Long; Xu, Xiao-Xia; Zhang, Li-Yun; Xu, Qiang; Willems, Helmut
通讯作者	Ding, L (通讯作者)
发表日期	2011
ISSN	0305-8719
起始页码	27
结束页码	44
卷号	353
英文摘要	The Selin Co basin in the northern Lhasa terrane includes more than 3000 m of upward coarsening Lower Cretaceous strata, and the sedimentary sequence from the flysch to the molasse indicates the evolution of a foreland basin. Petrographic analysis shows that sandstones are rich in volcanic and sedimentary lithics and most of them fall into recycled orogen and magmatic arc. Uranium-lead (U-Pb) ages were determined for 435 detrital zircons from the Lower Cretaceous strata in the Selin Co basin. Relative probability of detrital zircon ages shows the Eshaerbu Formation was rich in zircon grains with the age of 125-140 and 160-180 Ma, and the Duoni Formation was dominated by one main age cluster of 125-150 Ma. Analysis of the potential provenances suggests the Early Cretaceous zircon grains were primarily derived from the Gangdese magmatic arc to the south. The youngest zircon ages in the lowermost exposure of the Eshaerbru Formation are c. 130 Ma, providing a maximum depositional age of sediments in the Selin Co basin. Collectively, our studies, together with previously documented Cretaceous thrusting in the Lhasa terrane, suggest the Lower Cretaceous Selin Co basin was deposited in a retroarc foreland basin. From 145-90 Ma, a retroarc foreland basin was presumed to develop in the Lhasa terrane, migrating from the south to the north. Crustal thickening, likely associated with the evolution of the retroarc foreland basin, was speculated to start in the Early Cretaceous in the Lhasa terrane.
关键词	U-PB GEOCHRONOLOGY SOUTHERN TIBET TECTONIC EVOLUTION VOLCANIC-ROCKS LHASA TERRANE GEOCHEMICAL CONSTRAINTS PLATEAU PROVENANCE BLOCK HISTORY
语种	英语
WOS研究方向	Geochemistry & Geophysics ; Geology
WOS类目	Geochemistry & Geophysics ; Geology
WOS记录号	WOS:000288487200003
来源期刊	GROWTH AND COLLAPSE OF THE TIBETAN PLATEAU
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257883
推荐引用方式 GB/T 7714	Zhang, Qing-Hai,Ding, Lin,Cai, Fu-Long,et al. Early Cretaceous Gangdese retroarc foreland basin evolution in the Selin Co basin, central Tibet: evidence from sedimentology and detrital zircon geochronology[J]. 中国科学院青藏高原研究所,2011,353.
APA	Zhang, Qing-Hai.,Ding, Lin.,Cai, Fu-Long.,Xu, Xiao-Xia.,Zhang, Li-Yun.,...&Willems, Helmut.(2011).Early Cretaceous Gangdese retroarc foreland basin evolution in the Selin Co basin, central Tibet: evidence from sedimentology and detrital zircon geochronology.GROWTH AND COLLAPSE OF THE TIBETAN PLATEAU,353.
MLA	Zhang, Qing-Hai,et al."Early Cretaceous Gangdese retroarc foreland basin evolution in the Selin Co basin, central Tibet: evidence from sedimentology and detrital zircon geochronology".GROWTH AND COLLAPSE OF THE TIBETAN PLATEAU 353(2011).