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Middle Miocene ultrapotassic magmatism in the Himalaya: A response to mantle unrooting process beneath the orogen

文献类型：期刊论文

作者Liu, Zhi-Chao4,5; Wang, Jian-Gang3; Liu, Xiao-Chi3; Liu, Yiduo2; Lai, Qing-Zhou1
刊名TERRA NOVA
出版日期2020-11-30
页码12
ISSN号0954-4879
DOI10.1111/ter.12507
英文摘要Post-collisional ultrapotassic magmatism received special attention because it is an important indicator for mantle geodynamics in a collisional orogen. So far, no mantle-derived magmatism has been identified within the Himalayan belt, hindering our understanding of the architecture and thermal state of the deep-seated lithosphere in this area during the orogenesis. Here, we report the first discovery of mantle-derived ultrapotassic rock in the Himalayan region. The middle Miocene (ca. 13 Ma) lamprophyre dike intruded the Tethyan Himalaya sedimentary cover of the Ramba dome on the shoulder of the Yadong-Gulu rift. Geochemical analyses suggest that the ultrapotassic melt was derived from the subcontinental lithospheric mantle of the Indian plate, within a relatively shallow depth in the spinel stability field. The ultrapotassic magmatism indicates asthenospheric upwelling in the middle Miocene, a response to the mantle unrooting process beneath the Himalayan orogen.
WOS关键词EAST-WEST EXTENSION ; SOUTHERN TIBET ; TECTONIC EVOLUTION ; SW TIBET ; ROCKS ; PETROGENESIS ; LITHOSPHERE ; CONSTRAINTS ; COLLISION ; DYNAMICS
资助项目Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0802] ; NSF of China[41888101] ; NSF of China[41672055]
WOS研究方向Geology
语种英语
出版者WILEY
WOS记录号WOS:000594164600001
资助机构Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; NSF of China ; NSF of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; NSF of China ; NSF of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; NSF of China ; NSF of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; NSF of China ; NSF of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/98667]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Liu, Zhi-Chao
作者单位1.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing, Peoples R China
2.Univ Houston, Dept Earth & Atmospher Sci, Houston, TX USA
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
4.Sun Yat Sen Univ, Sch Earth Sci & Engn, Guangdong Provincal Key Lab Geodynam & Geohazards, Guangzhou, Peoples R China
5.Southern Lab Ocean Sci & Engn, Zhuhai, Guangdong, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Zhi-Chao,Wang, Jian-Gang,Liu, Xiao-Chi,et al. Middle Miocene ultrapotassic magmatism in the Himalaya: A response to mantle unrooting process beneath the orogen[J]. TERRA NOVA,2020:12.
APA Liu, Zhi-Chao,Wang, Jian-Gang,Liu, Xiao-Chi,Liu, Yiduo,&Lai, Qing-Zhou.(2020).Middle Miocene ultrapotassic magmatism in the Himalaya: A response to mantle unrooting process beneath the orogen.TERRA NOVA,12.
MLA Liu, Zhi-Chao,et al."Middle Miocene ultrapotassic magmatism in the Himalaya: A response to mantle unrooting process beneath the orogen".TERRA NOVA (2020):12.

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来源：地质与地球物理研究所

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