气候变化领域集成服务门户(CCPortal): Provenance of Late Triassic-Early Jurassic forearc basin in southern Tibet and its tectonic significance

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DOI	10.18814/epiiugs/2022/022043
	Provenance of Late Triassic-Early Jurassic forearc basin in southern Tibet and its tectonic significance
	Li, Nan; Yang, Wenguang; Zhu, Lidong; Xie, Long; Zhong, Yao; Zhou, Yu; Mai, Yuanjun; Zhang, Hongliang
发表日期	2023
ISSN	0705-3797
起始页码	439
结束页码	450
卷号	46 期号:3
英文摘要	The Late Triassic-Early Jurassic tectonic setting that produced arc magmatism in the southern Gangdese region and the timing of the initial Yarlung Zangbo Ocean sub-duction remain controversial. Arc-related basin records can provide sedimentological constraints on these con-troversial events. In this study, the sedimentary tectonic setting of the Liuqiong Formation and the tectonic evolu-tion of the Yarlung Zangbo Ocean in the southern Gang-dese were investigated using detrital zircon U-Pb chronology and Hf isotope data. The Liuqiong Formation mainly comprises intercalated clastic and volcanic rocks, locally developed limestone blocks, and is characterized by deep -water gravity flow deposits. The detrital zircon U-Pb ages were concentrated at 202-249 Ma, with highly positive epsilon Hf(t) values (+10.3-+14.4). Provenance analyses indi-cate that the sedimentary detritus in the Liuqiong Forma-tion was sourced from Late Triassic-Early Jurassic arc magmatic rocks in the southern Gangdese region. Based on comprehensive investigations of the regional geology, the Late Triassic-Early Jurassic Liuqiong Formation was deposited in a forearc basin setting, and contains a basin record of the northward subduction and southward accre-tion of the Yarlung Zangbo Ocean.
英文关键词	NEO-TETHYS OCEAN; LHASA TERRANE IMPLICATIONS; PORPHYRY COPPER BELT; U-PB GEOCHRONOLOGY; XIONGCUN DISTRICT; VOLCANIC-ROCKS; LU-HF; ISOTOPIC COMPOSITION; GANGDESE BATHOLITH; LANGJIEXUE GROUP
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:001080319800002
来源期刊	EPISODES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283442
作者单位	Chengdu University of Technology; Sichuan University
推荐引用方式 GB/T 7714	Li, Nan,Yang, Wenguang,Zhu, Lidong,et al. Provenance of Late Triassic-Early Jurassic forearc basin in southern Tibet and its tectonic significance[J],2023,46(3).
APA	Li, Nan.,Yang, Wenguang.,Zhu, Lidong.,Xie, Long.,Zhong, Yao.,...&Zhang, Hongliang.(2023).Provenance of Late Triassic-Early Jurassic forearc basin in southern Tibet and its tectonic significance.EPISODES,46(3).
MLA	Li, Nan,et al."Provenance of Late Triassic-Early Jurassic forearc basin in southern Tibet and its tectonic significance".EPISODES 46.3(2023).