Re-Os and 40Ar/39Ar Dating of the Shujiadian Copper Deposit in Tongling, China: Implications for Regional Metallogenesis
详细信息
- 责任者：Wang Shiwei (School of Resources and Environmental Engineering ; Hefei University of Technology ; Hefei 230009 ; China) ; Zhou Taofa
- 刊名：Acta Petrologica Sinica
- 出版年：2012
- 卷期：28(10)
- 关键词：斑岩铜矿床 ; porphyry copper deposit ; 成矿期 ; metallogenic period ; 安徽 ; Anhui Province
- 页码：p.3170-3180
- 图表：illus., 2 tables, 63 refs.
- 分类号：1001
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
The Shujiadian copper deposit,located between the Tongling fault uplift and the Fanchang fault basin in the Middle and Lower Yangtze River,is a newly discovered porphyry copper deposit. On the basis of geological and petrographic studies,the authors have conducted molybdenite Re-Os and biotite 40Ar-39Ar dating to precisely constrain the timing of mineralization in the deposit.The results show that copper mineralization and hydrothermal biotite alteration occurred at (140.6±2.0) Ma and (142.8 ±1.1) Ma. A synthesis of diagenesis and existing geochronological data indicates that the Shujiadian deposit formed as a result of the Early Cretaceous giant metallogenic event within the Tongling fault uplift.
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