气候变化领域集成服务门户(CCPortal): Magma migration and surface uplift in Pamir-western Tibet driven by deep lithospheric dynamics

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DOI	10.1130/G51216.1
	Magma migration and surface uplift in Pamir-western Tibet driven by deep lithospheric dynamics
	Tang, Gong-Jian; Wyman, Derek A.; Dan, Wei; Wang, Qiang; Gadoev, Mustafo; Oimahmadov, Ilhomjon
发表日期	2023
ISSN	0091-7613
EISSN	1943-2682
起始页码	813
结束页码	817
卷号	51 期号:9
英文摘要	There are two parallel >1200-km-long semi-continuous (ultra)potassic magmatic belts in the southern (Karakorum-Lhasa) and the northern (Central Pamir-western Kunlun) parts of Pamir-western Tibet. The southern belt is widely attributed to northward subduction of the Indian plate, while it has been suggested that the northern belt relates to the southward subduction of the Asian plate. We report new zircon U-Pb ages and isotopic data for the northern belt that show eastward magma migration between ca. 20 Ma and the present, which are contemporaneous with continental-scale thermochronometric cooling ages. Whereas magma migration in the south was caused by progressive west-to-east Indian lithosphere break-off, magma generation in the north is shown to be related to asthenospheric mantle upflow through a small mantle window (similar to 100 km width) forced by Indian lithosphere underthrusting, Pamir-western Tibet lithosphere mantle dripping, and resistance of the Tarim lithosphere. Northern belt magma migration relates to progressively eastward underthrusting of the Indian lithosphere that took similar to 15 m.y. to move northward across similar to 350 km to meet Asian lithosphere. Accordingly, both belts of (ultra)potassic magmatism relate to the northward subduction of the Indian plate that was responsible for plateau uplift in Pamir-western Tibet.
英文关键词	MAFIC MAGMATISM; SLAB DYNAMICS; BREAK-OFF; INDIA; SUBDUCTION; EVOLUTION; BENEATH; DELAMINATION; PLATEAU; BURIAL
WOS研究方向	Geology
WOS记录号	WOS:001091244000003
来源期刊	GEOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282938
作者单位	Chinese Academy of Sciences; Guangzhou Institute of Geochemistry, CAS; University of Sydney; Academy of Sciences of Republic of Tajikistan; Institute of Geology, Seismological Construction & Seismology
推荐引用方式 GB/T 7714	Tang, Gong-Jian,Wyman, Derek A.,Dan, Wei,et al. Magma migration and surface uplift in Pamir-western Tibet driven by deep lithospheric dynamics[J],2023,51(9).
APA	Tang, Gong-Jian,Wyman, Derek A.,Dan, Wei,Wang, Qiang,Gadoev, Mustafo,&Oimahmadov, Ilhomjon.(2023).Magma migration and surface uplift in Pamir-western Tibet driven by deep lithospheric dynamics.GEOLOGY,51(9).
MLA	Tang, Gong-Jian,et al."Magma migration and surface uplift in Pamir-western Tibet driven by deep lithospheric dynamics".GEOLOGY 51.9(2023).