气候变化领域集成服务门户(CCPortal): Cenozoic low temperature cooling history of the eastern Lhasa terrane: Implications for high-relief topography of external drainage area in the southern Tibetan Plateau

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DOI	10.1016/j.gsf.2023.101610
	Cenozoic low temperature cooling history of the eastern Lhasa terrane: Implications for high-relief topography of external drainage area in the southern Tibetan Plateau
	Su, Wenbo; He, Zhiyuan; Zhong, Linglin; Glorie, Stijn; Zhong, Kanghui; De Grave, Johan
发表日期	2023
ISSN	1674-9871
卷号	14 期号:5
英文摘要	The Tibetan Plateau geographically contains internal and external drainage areas based on the distributions of river flows and catchments. The internal and external drainage areas display similar highelevations, while their topographic reliefs are not comparable; the former shows a large low-relief surface, whereas the latter is characterized by relatively high relief. The eastern Lhasa terrane is a key tectonic component of the Tibetan Plateau. It is characterized by high topography and relief, but the thermal history of its basement remains relatively poorly constrained. In this study we report new apatite fission track data from the eastern part of the central Lhasa terrane to constrain the thermo-tectonic evolution of the external drainage area in the southern Tibetan Plateau. Twenty-one new AFT ages and associated thermal history models reveal that the basement underlying the external drainage area in southern Tibet experienced three main phases of rapid cooling in the Cenozoic. The Paleocene-early Eocene (-60-48 Ma) cooling was likely induced by crustal shortening and associated rock exhumation, due to accelerated northward subduction of the NeoTethys oceanic lithosphere. A subsequent cooling pulse lasted from the late Eocene to early Oligocene (-40-28 Ma), possibly due to the thickening and consequential erosion of the Lhasa lithosphere resulted from the continuous northward indentation of the India plate into Eurasia. The most recent rapid cooling event occurred in the middle Miocene-early Pliocene (-16-4 Ma), likely induced by accelerated incision of the Lhasa River and local thrust faulting. Our AFT ages and published low-temperature thermochronological data reveal that the external drainage area experienced younger cooling events compared with the internal drainage area, and that the associated differentiated topographic evolution initiated at ca. 30 Ma. The contributing factors for the formation of the high-relief topography mainly contain active surface uplift, fault activity, and the enhanced incision of the Yarlung River.(c) 2023 China University of Geosciences (Beijing) and Peking University. Published by Elsevier B.V. on behalf of China University of Geosciences (Beijing). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
关键词	Cenozoic Apatite fission track thermochronology Exhumation Lhasa terrane External drainage area Tibetan Plateau
英文关键词	INDIA-ASIA COLLISION; FISSION-TRACK; TECTONIC EVOLUTION; GANGDESE BATHOLITH; SUTURE ZONE; STRUCTURAL EVOLUTION; EXHUMATION HISTORY; SOUTHWESTERN TIBET; VOLCANIC-ROCKS; APATITE
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:000980533500001
来源期刊	GEOSCIENCE FRONTIERS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283669
作者单位	Ghent University; Chengdu University of Technology; University of Adelaide
推荐引用方式 GB/T 7714	Su, Wenbo,He, Zhiyuan,Zhong, Linglin,et al. Cenozoic low temperature cooling history of the eastern Lhasa terrane: Implications for high-relief topography of external drainage area in the southern Tibetan Plateau[J],2023,14(5).
APA	Su, Wenbo,He, Zhiyuan,Zhong, Linglin,Glorie, Stijn,Zhong, Kanghui,&De Grave, Johan.(2023).Cenozoic low temperature cooling history of the eastern Lhasa terrane: Implications for high-relief topography of external drainage area in the southern Tibetan Plateau.GEOSCIENCE FRONTIERS,14(5).
MLA	Su, Wenbo,et al."Cenozoic low temperature cooling history of the eastern Lhasa terrane: Implications for high-relief topography of external drainage area in the southern Tibetan Plateau".GEOSCIENCE FRONTIERS 14.5(2023).