气候变化领域集成服务门户(CCPortal): Provenance of Lower Cretaceous sedimentary rocks in the northern margin of the Lhasa terrane, Tibet: Implications for the timing of the Lhasa-Qiangtang collision

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DOI	10.1016/j.jseaes.2019.104162
	Provenance of Lower Cretaceous sedimentary rocks in the northern margin of the Lhasa terrane, Tibet: Implications for the timing of the Lhasa-Qiangtang collision
	Li, Shun; Yin, Changqing; Ding, Lin; Guilmette, Carl; Zhang, Jian; Yue, Yahui; Baral, Upendra
通讯作者	Li, S (通讯作者)
发表日期	2020
ISSN	1367-9120
EISSN	1878-5786
卷号	190
英文摘要	Placing precise constraints on the timing of initial Lhasa-Qiangtang collision is essential to understand the assembly processes and uplift mechanism of the Tibetan Plateau prior to the Cenozoic India-Asia collision. Along the over 2000-km-long Bangong-Nujiang suture zone, the timing of initial Lhasa-Qiangtang collision remains highly controversial, with estimates ranging from Middle Jurassic to Late Cretaceous, spanning nearly 100 Myr. Provenance analysis of elastic rocks has been proved as an effective approach to pinpoint the timing of initial continental collision by documenting the provenance exchange from one plate to another. This study focuses on the Lower Cretaceous Duoni Formation in the Gerze area of northern Lhasa margin. The youngest detrital zircon U-Pb ages along with other age constraints in literature indicate that the Duoni Formation was deposited during the late Early Cretaceous (119-122.7 Ma). A combined sandstone petrographic, detrital zircon and Cr-spinel provenance analysis demonstrates that the Duoni Formation records unambiguously suture zone- and Qiangtang-derived detritus from the north, such as the Bangong-Nujiang ophiolites and southern Qiangtang arc. Based on structural geology, stratigraphy and provenance analysis, the Lower Cretaceous Duoni Formation on the northern Lhasa margin was most likely deposited in a peripheral foreland basin in response to the Lhasa-Qiangtang collision. These data provide undisputable evidence that the Lhasa-Qiangtang collision was well underway and the Lhasa terrane had been welded to the southern margin of Eurasia by at least the late Early Cretaceous (119-122.7 Ma).
关键词	ZIRCON U-PB BANGONG-NUJIANG SUTURE INDIA-ASIA COLLISION FORE-ARC BASIN GROUP VOLCANIC-ROCKS TECTONIC EVOLUTION SOUTHERN TIBET GANGDESE BATHOLITH OCEAN CONSTRAINTS PLATEAU EVIDENCE
英文关键词	Tibetan Plateau; Bangong-Nujiang suture zone; Peripheral foreland basin; Duoni Formation; Lhasa-Qiangtang collision
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000517662800009
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
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/259886
推荐引用方式 GB/T 7714	Li, Shun,Yin, Changqing,Ding, Lin,et al. Provenance of Lower Cretaceous sedimentary rocks in the northern margin of the Lhasa terrane, Tibet: Implications for the timing of the Lhasa-Qiangtang collision[J]. 中国科学院青藏高原研究所,2020,190.
APA	Li, Shun.,Yin, Changqing.,Ding, Lin.,Guilmette, Carl.,Zhang, Jian.,...&Baral, Upendra.(2020).Provenance of Lower Cretaceous sedimentary rocks in the northern margin of the Lhasa terrane, Tibet: Implications for the timing of the Lhasa-Qiangtang collision.JOURNAL OF ASIAN EARTH SCIENCES,190.
MLA	Li, Shun,et al."Provenance of Lower Cretaceous sedimentary rocks in the northern margin of the Lhasa terrane, Tibet: Implications for the timing of the Lhasa-Qiangtang collision".JOURNAL OF ASIAN EARTH SCIENCES 190(2020).