Re-Os Isotopic Dating of Molybdenite from the Langyashan Copper Deposit in Chuzhou of Anhui Province
详细信息
- 责任者：Qin Yan (Graduate School of Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Mei Yuping
- 刊名：Rock and Mineral Analysis
- 出版年：2009
- 卷期：28(3)
- 关键词：铜矿 ; copper ores ; 铼—锇计时 ; Re ; Os dating ; 安徽 ; Anhui
- 页码：p.259-264
- 图表：4 illus., 1 table, 17 refs.
- 分类号：1001
- issnNo：ISSN0254-5357
- isbnNo：CN11-2131/TD
摘要
A precise Re-Os age is given for the Langyashan copper deposit in Chuzhou. The model age for five molybdenite samples from the deposit varies from (128.9±1.8) Ma to (130.3±1.9) Ma and the isochron age is (128.6±2.2) Ma, MSWD=0.45. The results indicate that the origin of the deposit is from regional tectno-magmatic activities during the early cretaceous period. The molybdenites from the Langyashan copper deposit have a very high Re content, which indicates that the deposit originated from the mixing of the crust and the mantle sources with the mantle as a primary source.