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DOI	10.3390/min13030342
	High Degree of Differentiation and Enrichment of Li, Rb and Cs in Potassic-Ultrapotassic Volcanic Rocks: An Example from the Lhasa Block, Tibet
	Che, Dong; Zheng, Mianping; Zhao, Yuanyi; Zhang, Zhaozhi; Ye, Chuanyong; Xing, Enyuan; Zhang, Xuefei; Li, Mingming
发表日期	2023
EISSN	2075-163X
卷号	13 期号:3
英文摘要	Post-collisional potassic-ultrapotassic volcanic rocks are widely developed in the Lhasa block, Qinghai-Tibet region. In this paper, it was observed for the first time that dilute alkali elements-Li, Rb, and Cs-exhibit supernormal enrichment in the research data of numerous potassic-ultrapotassic volcanic rocks in the Lhasa block. At the same time, there are few studies on the genesis of enrichment. Currently, 568 sets of published volcanic rock data and 8 sets of measured data in the Lhasa block are sorted in detail, and the genesis of dilute alkali element enrichment is explained by means of geochemical research methods. It is believed that the high degree of magmatic fractionation of potassic-ultrapotassic volcanic rocks in the Lhasa block is the main reason for the abnormal enrichment of dilute alkali elements such as Li, Rb, and Cs. The abnormal enrichment area is mainly located in the central and western parts of the Lhasa block with an age range of 25-13 Ma. The discrimination range of Zr/Hf and Nb/Ta with a high degree of differentiation of potassic-ultrapotassic volcanic rocks in the Lhasa block is divided by analogy with the research results of highly fractionated granites, which provides a reference for the study of the supernormal enrichment of dilute alkali elements in potassic-ultrapotassic volcanic rocks in this area.
关键词	Lhasa block potassic-ultrapotassic volcanic rocks alkali-rich highly fractionated Tibet
英文关键词	HIGH MG-NUMBER; MANTLE SOURCE; NORTHERN TIBET; REE PATTERNS; NB-TA; PETROGENESIS; GRANITES; GEOCHEMISTRY; CONSTRAINTS; SOUTHERN
WOS研究方向	Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing
WOS记录号	WOS:000958149800001
来源期刊	MINERALS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282800
作者单位	China Geological Survey; Chinese Academy of Geological Sciences; China University of Mining & Technology
推荐引用方式 GB/T 7714	Che, Dong,Zheng, Mianping,Zhao, Yuanyi,et al. High Degree of Differentiation and Enrichment of Li, Rb and Cs in Potassic-Ultrapotassic Volcanic Rocks: An Example from the Lhasa Block, Tibet[J],2023,13(3).
APA	Che, Dong.,Zheng, Mianping.,Zhao, Yuanyi.,Zhang, Zhaozhi.,Ye, Chuanyong.,...&Li, Mingming.(2023).High Degree of Differentiation and Enrichment of Li, Rb and Cs in Potassic-Ultrapotassic Volcanic Rocks: An Example from the Lhasa Block, Tibet.MINERALS,13(3).
MLA	Che, Dong,et al."High Degree of Differentiation and Enrichment of Li, Rb and Cs in Potassic-Ultrapotassic Volcanic Rocks: An Example from the Lhasa Block, Tibet".MINERALS 13.3(2023).