Characteristics and Geochronology of the W, Mo-Bearing Granodiorite Porphyry in Dongyuan, Southern Anhui Province
详细信息
- 责任者：Zhou Xiang (School of Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Yu Xinqi
- 刊名：Geoscience
- 出版年：2011
- 卷期：25(2)
- 关键词：花岗闪长斑岩 ; granodiorite porphyry ; 钼矿 ; molybdenum ores ; 钨矿 ; tungsten ores ; 安徽 ; Anhui Province
- 页码：p.201-210
- 图表：8 illus., 2 tables, 37 refs.
- 分类号：1001
- 出版序号：20120283
- issnNo：ISSN1000-8527
- isbnNo：CN11-2035/P
摘要
Based on the field investigation, profiling and geochemical testing in detail, the systematic studies have been performed on geochronology of the Dongyuan W, Mo-bearing granodiorite porphyry in southern Anhui Province. The Sensitive High Resolution Ion Micro Probe (SHRIMP) U-Pb zircon dating yields a concordant age of (146 ±1) Ma for granodiorite, suggesting that the intrusive body was formed during Late Jurassic. While the Re-Os dating result of 146 Ma shows that the molybdenite from the body was formed in the Late Jurassic, the same stage when the intrusive body formed. The content of Re from the molybdenite (22.02×10-6~98.09×10-6) shows that the ore-forming materials are derived from the crust-mantle mixed source.
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