气候变化领域集成服务门户(CCPortal): Rift propagation in south Tibet controlled by under-thrusting of India: a case study of the Tangra Yumco graben (south Tibet)

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DOI	10.1144/jgs2022-090
	Rift propagation in south Tibet controlled by under-thrusting of India: a case study of the Tangra Yumco graben (south Tibet)
	Wolff, Reinhard; Hetzel, Ralf; Hoelzer, Kyra; Dunkl, Istvan; Xu, Qiang; Anczkiewicz, Aneta A.; Li, Zhenyu
发表日期	2023
ISSN	0016-7649
EISSN	2041-479X
卷号	180 期号:2
英文摘要	Active graben systems in south Tibet and the Himalaya are the surface expression of ongoing east-west extension, although the cause and spatiotemporal evolution of normal faulting is a still a matter of debate. We reconstructed the exhumation history driven by normal faulting in the southern Tangra Yumco graben using new thermochronological data. The Miocene cooling history of the footwall of the main graben-bounding fault is constrained by zircon (U-Th)/He ages (16.7 +/- 1.0 to 13.3 +/- 0.6 Ma), apatite fission track ages (15.9 +/- 2.1 to 13.0 +/- 2.1 Ma) and apatite (U-Th)/He ages (7.9 +/- 0.4 to 5.3 +/- 0.3 Ma). Thermo-kinematic modelling of the data indicates that normal faulting began 19.0 +/- 1.1 Ma at a rate of c. 0.2 km myr(-1) and accelerated to c. 0.4 km myr(- 1) at c. 5 Ma. In the northern Tangra Yumco rift, remodelling of published data shows that faulting started c. 5 myr later at 13.9 +/- 0.8 Ma. The age difference and the distance of 130 km between these two sites indicates that rifting and normal faulting propagated northward at an average rate of c. 25 km myr(-1). As this rate is similar to the Miocene convergence rate between India and south Tibet, we argue that the under-thrusting of India beneath Tibet exerted an important control on the propagation of rifts in south Tibet.
英文关键词	ASIA SUTURE ZONE; TECTONIC EVOLUTION; RADIATION-DAMAGE; COLLISION ZONE; NORMAL FAULTS; LHASA BLOCK; (U-TH)/HE THERMOCHRONOMETRY; NEIGHBORHOOD ALGORITHM; GEOPHYSICAL INVERSION; CRUSTAL DEFORMATION
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:001008426400007
来源期刊	JOURNAL OF THE GEOLOGICAL SOCIETY
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/282794
作者单位	University of Munster; University of Gottingen; Southwest Petroleum University; China National Petroleum Corporation; Polish Academy of Sciences; Institute of Geological Sciences of the Polish Academy of Sciences; Chinese Academy of Sciences; Institute of Tibetan Plateau Research, CAS
推荐引用方式 GB/T 7714	Wolff, Reinhard,Hetzel, Ralf,Hoelzer, Kyra,et al. Rift propagation in south Tibet controlled by under-thrusting of India: a case study of the Tangra Yumco graben (south Tibet)[J]. 中国科学院青藏高原研究所,2023,180(2).
APA	Wolff, Reinhard.,Hetzel, Ralf.,Hoelzer, Kyra.,Dunkl, Istvan.,Xu, Qiang.,...&Li, Zhenyu.(2023).Rift propagation in south Tibet controlled by under-thrusting of India: a case study of the Tangra Yumco graben (south Tibet).JOURNAL OF THE GEOLOGICAL SOCIETY,180(2).
MLA	Wolff, Reinhard,et al."Rift propagation in south Tibet controlled by under-thrusting of India: a case study of the Tangra Yumco graben (south Tibet)".JOURNAL OF THE GEOLOGICAL SOCIETY 180.2(2023).