Re-Os Dating of Molybdenite from the Fenghuangshan Skarn Cu Deposit in Tongling, Anhui Province and Its Geological Significance
详细信息
- 责任者：Qu Hongying (MLR Key Laboratory of Metallogeny and Mineral Assessment ; Institute of Mineral Resources ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Pei Rongfu
- 刊名：Acta Petrologica Sinica
- 出版年：2010
- 卷期：26(3)
- 关键词：铜矿 ; copper ores ; 铼—锇计时 ; Re-Os dating
- 页码：p.785-796
- 图表：4 illus., 2 tables, 67 refs.
- 分类号：1001
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
In this paper the authors yield molybdenite Re-Os model ages ranging from139.1±2.4 to 142.0±2.2 Ma and the isochronal age 141.1±1.4 Ma. The results show that Cu mineralization of the Fenghuangshan Cu deposit occurred at the Early Cretaceous．The ages indicate close temporal relations between Cu mineralization and magmatism. The authors’ study is consistent to previous studies that Cu mineralization occurred at the Mesozoic second mineralization stage，responding to the Mesozoic lithosphere delamination event in south of China．