气候变化领域集成服务门户(CCPortal): Middle Miocene ultrapotassic magmatism in the Himalaya: A response to mantle unrooting process beneath the orogen

CCPortal

DOI	10.1111/ter.12507
	Middle Miocene ultrapotassic magmatism in the Himalaya: A response to mantle unrooting process beneath the orogen
	Liu, Zhi-Chao; Wang, Jian-Gang; Liu, Xiao-Chi; Liu, Yiduo; Lai, Qing-Zhou
通讯作者	Liu, ZC (通讯作者)
发表日期	2021
ISSN	0954-4879
EISSN	1365-3121
起始页码	240
结束页码	251
卷号	33 期号:3
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.
关键词	EAST-WEST EXTENSION SOUTHERN TIBET TECTONIC EVOLUTION SW TIBET ROCKS PETROGENESIS LITHOSPHERE CONSTRAINTS COLLISION DYNAMICS
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000594164600001
来源期刊	TERRA NOVA
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/260368
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]. 中国科学院青藏高原研究所,2021,33(3).
APA	Liu, Zhi-Chao,Wang, Jian-Gang,Liu, Xiao-Chi,Liu, Yiduo,&Lai, Qing-Zhou.(2021).Middle Miocene ultrapotassic magmatism in the Himalaya: A response to mantle unrooting process beneath the orogen.TERRA NOVA,33(3).
MLA	Liu, Zhi-Chao,et al."Middle Miocene ultrapotassic magmatism in the Himalaya: A response to mantle unrooting process beneath the orogen".TERRA NOVA 33.3(2021).