气候变化领域集成服务门户(CCPortal): Strongly Peraluminous Highly Fractionated I-Type Granite from Bangong-Nujiang Metallogenic Belt, Tibet: Implications for Continental Evolution and Evaluation of Economic Potentiality

CCPortal

DOI	10.3390/min13091152
	Strongly Peraluminous Highly Fractionated I-Type Granite from Bangong-Nujiang Metallogenic Belt, Tibet: Implications for Continental Evolution and Evaluation of Economic Potentiality
	Wang, Nan; Liu, Zhibo; Lei, Min
发表日期	2023
EISSN	2075-163X
卷号	13 期号:9
英文摘要	The research on highly fractionated granite has significant implications for both the evolution and compositional maturation of the continental crust and metallogenic exploration. As a means of further understanding crustal evolution and promoting ore exploration in the Bangong-Nujiang metallogenic belt (BNMB), we present the petrography, zircon LA-ICP-MS U-Pb age, and Hf isotopic data, along with the whole-rock geochemical and Sr-Nd isotopic composition on Kese highly fractionated granite in the Baingoin area within the BNMB, central Tibet. The results show that Kese granite possesses a zircon U-Pb age of 127.8 +/- 1.7 Ma and a relative enrichment in zircon Hf isotopic composition (-12.8 similar to+0.3) with a two-stage Hf model age of 1.2 similar to 2.0 Ga. This granite belongs to the high-K calc-alkaline series, characterized by a strongly peraluminous feature, and is enriched in large-ion lithophile elements (LILEs) and Nd isotopes (-7.86 similar to-7.74). The granite was likely to have been derived from the mixed melts derived from 40%similar to 45% juvenile basaltic lower crust, 15%similar to 20% ancient lower, and 40% middle-upper, following intense fractional crystallization processes involving amphibole, biotite, plagioclase, and some accessory minerals during the magma's evolution. We infer that Kese highly fractionated granite can be formed from the continental collision of the Lhasa-Qiangtang terranes initiated before 128 Ma. The reworking of pre-existing juvenile and ancient crustal materials drove the composition of the northern Lhasa terrane to that of a mature continental crust. Moreover, the distinctive geochemical features have shown that the high degree of differentiation led to intense magmatic-hydrothermal interaction during the formation of Kese granite. A comparison of the geochemical characteristics of mineralized and barren granites suggests that the highly fractionated granites in Baingoin from the BNMB have a high economic potential and are suitable for preliminary exploration of Sn-W-(U) deposits.
关键词	economic potentiality reworking of continental crust petrogenesis highly fractionated granite Bangong-Nujiang metallogenic belt
英文关键词	A-TYPE GRANITES; PLASMA-MASS SPECTROMETRY; NORTHERN LHASA TERRANE; HIGH-SILICA GRANITES; TETRAD REE PATTERNS; S-TYPE GRANITES; U-PB ZIRCON; HF-ISOTOPE; INTRUSIVE ROCKS; TRACE-ELEMENTS
WOS研究方向	Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing
WOS记录号	WOS:001077667900001
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/283343
作者单位	China Geological Survey; Chinese Academy of Geological Sciences; China Geological Survey; Institute of Geology, Chinese Academy of Geological Sciences; Chinese Academy of Geological Sciences
推荐引用方式 GB/T 7714	Wang, Nan,Liu, Zhibo,Lei, Min. Strongly Peraluminous Highly Fractionated I-Type Granite from Bangong-Nujiang Metallogenic Belt, Tibet: Implications for Continental Evolution and Evaluation of Economic Potentiality[J],2023,13(9).
APA	Wang, Nan,Liu, Zhibo,&Lei, Min.(2023).Strongly Peraluminous Highly Fractionated I-Type Granite from Bangong-Nujiang Metallogenic Belt, Tibet: Implications for Continental Evolution and Evaluation of Economic Potentiality.MINERALS,13(9).
MLA	Wang, Nan,et al."Strongly Peraluminous Highly Fractionated I-Type Granite from Bangong-Nujiang Metallogenic Belt, Tibet: Implications for Continental Evolution and Evaluation of Economic Potentiality".MINERALS 13.9(2023).