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DOI	10.1007/s11631-023-00664-0
	Petrogenesis, oxidation state and volatile content of Dongga tonalite in the Gangdese belt, Xizang: Implication for porphyry Cu mineralization
	Zhang, Liqiang; Chen, Xilian; Zou, Shaohao; Xu, Deru; Wang, Xuena; Wang, Hua
发表日期	2024
ISSN	2096-0956
EISSN	2365-7499
起始页码	43
结束页码	2
卷号	43 期号:2
英文摘要	The Gangdese belt in Xizang has experienced both Jurassic subduction and Cenozoic continental collision processes, making it a globally renowned region for magmatic rocks and porphyry copper deposits. Numerous Jurassic intrusions have been identified in the belt. Apart from the quartz diorite porphyry in the large Xietongmen deposit, the Cu mineralization potential of other Jurassic intrusions in this belt remains unclear. This study presents zircon U-Pb dating and trace elements, apatite major and trace elements as well as published whole-rock geochemical and isotopic data of the Dongga tonalite in the central part of the Gangdese belt, aiming to reveal the petrogenesis, oxidation state, volatile content, and Cu mineralization potential of this intrusion. The Dongga tonalite has a zircon U-Pb age of 179.4 +/- 0.9 Ma. It exhibits high whole-rock V/Sc values (8.76-14.6), relatively low apatite CeN/CeN* ratios (1.04-1.28), elevated zircon (Eu/Eu*)N values (an average of 0.44), high Ce4+/Ce3+ values (205-1896), and high increment FMQ values (1.3-3.7), collectively suggesting a high magmatic oxygen fugacity. The Dongga tonalite features amphibole phenocrysts, relatively high whole-rock Sr/Y ratios (20.3-58.9), and lower zircon Ti temperatures (502-740 degrees C), reflecting a high magmatic water content. Estimation of magmatic sulfur content (0.002-0.024 wt%) based on apatite SO3 contents indicates an enriched magma sulfur content. Combined with previous studies and the collected Sr-Nd-Hf isotopes, the Dongga tonalite is derived from juvenile lower crust related with subduction of the NeoTethys oceanic slab. When compared with Xietongmen ore-bearing porphyries, the Dongga tonalite exhibits remarkable similarities with the Xietongmen ore-bearing porphyries in terms of magma source, tectonic background, magmatic redox state, and volatile components, which indicates that the Dongga tonalite has a high porphyry Cu mineralization potential, and therefore, provides important guidance for the future mineralization exploration.
英文关键词	Tonalite; Zircon; Apatite; Mineralization potential; Dongga area; Gangdese belt
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:001138062000001
来源期刊	ACTA GEOCHIMICA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/304986
作者单位	East China University of Technology; East China University of Technology
推荐引用方式 GB/T 7714	Zhang, Liqiang,Chen, Xilian,Zou, Shaohao,et al. Petrogenesis, oxidation state and volatile content of Dongga tonalite in the Gangdese belt, Xizang: Implication for porphyry Cu mineralization[J],2024,43(2).
APA	Zhang, Liqiang,Chen, Xilian,Zou, Shaohao,Xu, Deru,Wang, Xuena,&Wang, Hua.(2024).Petrogenesis, oxidation state and volatile content of Dongga tonalite in the Gangdese belt, Xizang: Implication for porphyry Cu mineralization.ACTA GEOCHIMICA,43(2).
MLA	Zhang, Liqiang,et al."Petrogenesis, oxidation state and volatile content of Dongga tonalite in the Gangdese belt, Xizang: Implication for porphyry Cu mineralization".ACTA GEOCHIMICA 43.2(2024).