气候变化领域集成服务门户(CCPortal): Detrital zircon U-Pb geochronology of the Wuyu (Oiyug) Basin, southern Tibetan Plateau, and its geological implications

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DOI	10.1016/j.gr.2020.01.017
	Detrital zircon U-Pb geochronology of the Wuyu (Oiyug) Basin, southern Tibetan Plateau, and its geological implications
	Feng, Wei; Meng, Qingquan; Song, Chunhui; Fang, Xiaomin; Huang, Ruohan; He, Pengju; Feng, Ying; Chen, Shuo; Xing, Zhenxing; Wang, Daichun
通讯作者	Meng, QQ (通讯作者)
发表日期	2020
ISSN	1342-937X
EISSN	1878-0571
起始页码	36
结束页码	48
卷号	83
英文摘要	Cenozoic strata in the Wuyu Basin record the tectonic evolution of the southern Tibetan Plateau. Here, we use detrital zircon isotope data and paleocurrents based on petrographic and sedimentary facies analyses to constrain the provenance of sediments in the Wuyu Basin. On this basis, we recognize multiple phases of tectonic activity in the southern Tibetan Plateau since the Miocene. Tectonic activity at ca. 15 Ma ended the lacustrine sedimentary facies of the Mangxiang Fm. and caused volcanic eruptions; the Wuyu Basin received deposits of the Laiying Fm. dominated by volcanic and pyroclastic rocks. Tectonic activity at ca. 8 Ma resulted in the volcanic and pyroclastic rocks of the [Aging Fm. becoming one of the main provenances for the overlying Wuyu Fm. The lacustrine environment in the Wuyu Basin ended again and shifted to braided river sedimentation, the paleocurrent directions changed from northward to southward, and the central Lhasa subterrane became one of the main provenances at ca. 2.5 Ma. By comparing the detrital zircon ages of our samples in the Wuyu Basin and sands from the Lhasa River, we infer that a long river comparable to the modem Lhasa River existed in the Wuyu Basin area at ca. 2.5 Ma. During the Quaternary, due to the consistent convergence between the Indian and Eurasian plates, the eastern Gangdese Mountains uplifted, which resulted in the blocking of this river and the development of the current geomorphic features in the Wuyu Basin area. (C) 2020 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
关键词	CENOZOIC TECTONIC EVOLUTION LHASA TERRANE GANGDESE ARC CRUSTAL EVOLUTION VOLCANIC-ROCKS MA MAGMATISM SHEAR ZONE MYR AGO CONSTRAINTS UPLIFT
英文关键词	Detrital zircon; Provenance; Uplift history; Wuyu Basin
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000540384800003
来源期刊	GONDWANA RESEARCH
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/259707
推荐引用方式 GB/T 7714	Feng, Wei,Meng, Qingquan,Song, Chunhui,et al. Detrital zircon U-Pb geochronology of the Wuyu (Oiyug) Basin, southern Tibetan Plateau, and its geological implications[J]. 中国科学院青藏高原研究所,2020,83.
APA	Feng, Wei.,Meng, Qingquan.,Song, Chunhui.,Fang, Xiaomin.,Huang, Ruohan.,...&Wang, Daichun.(2020).Detrital zircon U-Pb geochronology of the Wuyu (Oiyug) Basin, southern Tibetan Plateau, and its geological implications.GONDWANA RESEARCH,83.
MLA	Feng, Wei,et al."Detrital zircon U-Pb geochronology of the Wuyu (Oiyug) Basin, southern Tibetan Plateau, and its geological implications".GONDWANA RESEARCH 83(2020).