气候变化领域集成服务门户(CCPortal): New paleomagnetic constraints on rift basin evolution in the northern Himalaya mountains

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DOI	10.1016/j.gr.2019.07.008
	New paleomagnetic constraints on rift basin evolution in the northern Himalaya mountains
	Zhang, Weilin; Zhang, Dawen; Fang, Xiaomin; Zhang, Tao; Chen, Chihao; Yan, Maodu
通讯作者	Zhang, WL (通讯作者)
发表日期	2020
ISSN	1342-937X
EISSN	1878-0571
起始页码	98
结束页码	110
卷号	77
英文摘要	The late Cenozoic sediments in the rift basins in the northern Himalaya Mountains document important information about the uplift and deformation of the most active tectonic region in the Tibetan Plateau. However, these sediments have not been precisely dated, hindering our ability to address the basin development and termination associated with a series of uplifts in the southern Tibetan Plateau. Here, we report a detailed magnetostratigraphic study on the fluvio - lacustrine sedimentary sequence of the Dati Formation bearing abundant Hipparion forstenae fossils in the Dati Basin in the northern frontal region of the Himalaya Mountains. The 195 m - thick section yielded six normal and seven reversed polarity zones that correlate well with Chrons C3An.1r to C4r.2r of the geomagnetic polarity time scale, constraining the section age to similar to 8.6 - similar to 6.2 Ma. Together with the magnetostratigraphic results from other rift basins in the region, these results indicate that the horizons bearing the Hipparion fossils were deposited during the age interval of 7.1-6.5 Ma in the northern Himalaya Mountains. The regional tectonic activity and comprehensive magnetostratigraphic and sedimentologic comparisons suggest that the evolution of the rift basins in the northern Himalaya Mountains has involved three major stages since the late Cenozoic, i.e., (1) similar to 10.0-8.0 Ma, onset of the basins with fan delta facies; (2) similar to 8.0-3.0 Ma, expansion of the basins with mainly lacustrine facies; (3) similar to 3.0-1.7 Ma, shrinking and termination of the basins with alluvial fans. The basin evolutionary history indicates an accelerated tectonic uplift of the Himalaya Mountains at similar to 10.0 Ma, and two deformational events at similar to 3.0 Ma and at similar to 1.7 Ma. (C) 2019 Published by Elsevier B.V. on behalf of International Association for Gondwana Research.
关键词	HIGH-RESOLUTION MAGNETOSTRATIGRAPHY WESTERN QAIDAM BASIN TIBETAN PLATEAU SOUTHERN TIBET SEDIMENTARY RECORDS TECTONIC EVOLUTION YELLOW-RIVER LATE MIOCENE UPLIFT ASIA
英文关键词	Late Cenozoicsediment; Dati Basin; Magnetostratigraphy; Tectonicdeformation; Himalaya Mountains
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000502330900006
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/259702
推荐引用方式 GB/T 7714	Zhang, Weilin,Zhang, Dawen,Fang, Xiaomin,et al. New paleomagnetic constraints on rift basin evolution in the northern Himalaya mountains[J]. 中国科学院青藏高原研究所,2020,77.
APA	Zhang, Weilin,Zhang, Dawen,Fang, Xiaomin,Zhang, Tao,Chen, Chihao,&Yan, Maodu.(2020).New paleomagnetic constraints on rift basin evolution in the northern Himalaya mountains.GONDWANA RESEARCH,77.
MLA	Zhang, Weilin,et al."New paleomagnetic constraints on rift basin evolution in the northern Himalaya mountains".GONDWANA RESEARCH 77(2020).