气候变化领域集成服务门户(CCPortal): Vestiges of the Kerguelen Mantle Plume in Southern Tibet: Evidence from 123-117 Ma Magmatism in the Dingri Area of the Central Tethys Himalaya

CCPortal

DOI	10.1111/1755-6724.15038
	Vestiges of the Kerguelen Mantle Plume in Southern Tibet: Evidence from 123-117 Ma Magmatism in the Dingri Area of the Central Tethys Himalaya
	Yan, Songtao; Wu, Qingsong; Li, Hu; Dai, Xuejian; Zhu, Lidong; Wang, Jie; Xin, Chongyang
发表日期	2023
ISSN	1000-9515
EISSN	1755-6724
起始页码	1163
结束页码	1180
卷号	97 期号:4
英文摘要	The widely distributed Early Cretaceous magmatism in the Tethys Himalaya (TH) of southern Tibet is related to the Kerguelen mantle plume. Associated magmatic activity products are distributed in the eastern TH, where the active age is earlier than the peak ages of the Kerguelen mantle plume. This study investigated magmatic activity of the Dingri area in the central TH which was coeval with the Kerguelen mantle plume. The intrusion in the Dingri area contains diabases and monzonites. The zircon age of diabase is 123 & PLUSMN; 1 Ma, and that of monzonite is 117 & PLUSMN; 1 Ma. Geochemistry and Sr-Nd isotopic analyses show that the mafic-intermediate dikes were formed in an intraplate extensional environment. The diabase is derived from the enriched lithospheric mantle and monzonite is derived from partial melting of the lower crust, with both magmatic evolutions being contaminated by crustal materials. These characteristics are similar to those of the Rajmahal-Sylhet basalt, a typical Kerguelen mantle plume product. The discovery of the Dingri mafic-intermediate dikes of the central TH suggests that the TH and Rajmahal-Sylhet Traps formed a continuous mantle plume overflow magmatic belt which was a product of the continuous eruption of the Kerguelen mantle plume. image
关键词	geochronology mafic-intermediate dikes Kerguelen mantle plume central Tethys Himalaya East Gondwana
英文关键词	LARGE IGNEOUS PROVINCE; A-TYPE GRANITES; TRACE-ELEMENT; TECTONIC IMPLICATIONS; SEDIMENTARY HISTORY; SOUTHEASTERN TIBET; INITIAL ACTIVITY; MAFIC MAGMATISM; VOLCANIC-ROCKS; BUNBURY BASALT
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:001057477600011
来源期刊	ACTA GEOLOGICA SINICA-ENGLISH EDITION
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283187
作者单位	China Geological Survey; Chengdu University of Technology; Chengdu University of Technology
推荐引用方式 GB/T 7714	Yan, Songtao,Wu, Qingsong,Li, Hu,et al. Vestiges of the Kerguelen Mantle Plume in Southern Tibet: Evidence from 123-117 Ma Magmatism in the Dingri Area of the Central Tethys Himalaya[J],2023,97(4).
APA	Yan, Songtao.,Wu, Qingsong.,Li, Hu.,Dai, Xuejian.,Zhu, Lidong.,...&Xin, Chongyang.(2023).Vestiges of the Kerguelen Mantle Plume in Southern Tibet: Evidence from 123-117 Ma Magmatism in the Dingri Area of the Central Tethys Himalaya.ACTA GEOLOGICA SINICA-ENGLISH EDITION,97(4).
MLA	Yan, Songtao,et al."Vestiges of the Kerguelen Mantle Plume in Southern Tibet: Evidence from 123-117 Ma Magmatism in the Dingri Area of the Central Tethys Himalaya".ACTA GEOLOGICA SINICA-ENGLISH EDITION 97.4(2023).