气候变化领域集成服务门户(CCPortal): Early Triassic Volcanic Rocks in the Western Yarlung Zangbo Suture Zone: Implications for the Opening of the Neo-Tethys Ocean

CCPortal

DOI	10.1111/1755-6724.15141
	Early Triassic Volcanic Rocks in the Western Yarlung Zangbo Suture Zone: Implications for the Opening of the Neo-Tethys Ocean
	He, Juan; Li, Yalin; Hou, Yunling; Zhou, Aorigele; Wei, Yushuai; Chen, Xi; Dai, Jingen
发表日期	2024
ISSN	1000-9515
EISSN	1755-6724
起始页码	98
结束页码	2
卷号	98 期号:2
英文摘要	In this study, zircon U-Pb dating of volcanic rocks from the Zhongba ophiolite of the Yarlung Zangbo Suture Zone (YZSZ) in southern Xizang (Tibet) yielded an age of 247 +/- 3 Ma. According to whole rock geochemical and Sr-Nd-Pb isotopic data, the Early Triassic samples could be divided into two groups: Group 1 with P-MORB affinity, showing initial 87Sr/86Sr ratios of 0.70253-0.70602, epsilon Nd(t) values of 4.2-5.3, (206Pb/204Pb)t ratios of 16.353-18.222, (207Pb/204Pb)t ratios of 15.454-15.564, and (208Pb/204Pb)t ratios of 35.665-38.136; Group 2 with OIB affinity, showing initial 87Sr/86Sr ratios of 0.70249-0.70513, epsilon Nd(t) values of 4.4-4.9, (206Pb/204Pb)t ratios of 17.140-18.328, (207Pb/204Pb)t ratios of 15.491-15.575, and (208Pb/204Pb)t ratios of 36.051-38.247. Group 2 rocks formed by partial melting of the mantle source enriched by a former plume, and assimilated continental crustal material during melt ascension. The formation of Group 1 rocks corresponds to the mixing of OIB melts, with the same components as Group 2 and N-MORBs. The Zhongba Early Triassic rocks belong to the continental margin type ophiolite and formed in the continental-oceanic transition zone during the initial opening of the Neo-Tethys in southern Xizang (Tibet). image
英文关键词	rift; Early Triassic magmatism; Yarlung Zangbo Suture Zone; Neo-Tethys; Southern Xizang; Tibet
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001224655300006
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/308430
作者单位	West Yunnan University of Applied Sciences; China University of Geosciences; West Yunnan University of Applied Sciences; China Geological Survey; Chinese Academy of Geological Sciences
推荐引用方式 GB/T 7714	He, Juan,Li, Yalin,Hou, Yunling,et al. Early Triassic Volcanic Rocks in the Western Yarlung Zangbo Suture Zone: Implications for the Opening of the Neo-Tethys Ocean[J],2024,98(2).
APA	He, Juan.,Li, Yalin.,Hou, Yunling.,Zhou, Aorigele.,Wei, Yushuai.,...&Dai, Jingen.(2024).Early Triassic Volcanic Rocks in the Western Yarlung Zangbo Suture Zone: Implications for the Opening of the Neo-Tethys Ocean.ACTA GEOLOGICA SINICA-ENGLISH EDITION,98(2).
MLA	He, Juan,et al."Early Triassic Volcanic Rocks in the Western Yarlung Zangbo Suture Zone: Implications for the Opening of the Neo-Tethys Ocean".ACTA GEOLOGICA SINICA-ENGLISH EDITION 98.2(2024).