The Rb-Sr and Sm-Nd Geochronology Constraints on the Formation Age of Jinchuantang and Hongqiling Tin-Polymetallic Deposits in
详细信息
- 责任者：Ma Liyan (Wuhan Institute of Geology and Mineral Resources ; Wuhan 430205 ; China) ; Lu Yuanfa
- 刊名：Geology and Mineral Resources of South China
- 出版年：2010
- 卷期：Sum.104(4)
- 关键词：锡矿 ; tin ores ; 多金属矿 ; polymetallic ores ; 铷—锶计时 ; Rb-Sr dating ; 钐—钕计时 ; Sm-Nd dating ; 湖南 ; Hunan Province
- 页码：p.23-29
- 图表：3 illus., 2 tables, 16 refs.
- 分类号：1001
- issnNo：ISSN1007-3701
- isbnNo：CN42-1417/P
摘要
Jinchuantang and Hongqiling tin-polymetallic deposit are components of Dongpo orefield which is one of the famous mineral resource bases of China and considered to be closely associated to Qianlishan batholith in metallogeny. The results shows that Rb-Sr isochron ages for fluid inclusion in quartz from Jinchuantang and Hongqiling deposit are 133.4±5.9 Ma（MSWD=1.3） and 143.1±8.7 Ma（MSWD=47）, respectively, the Sm-Nd isochron ages for skarn minerals from Jinchuantang deposit are 141±11 Ma（MSWD=0.27）. According to previous research, mineralization of Jinchuantang tin-polymetallic deposit has a strong affiliation to porphyritic granite（first stage） of Qianlishan batholith. As a result, two stages of mineralization are existed in Jinchuantang deposit, which related to the porphyritic（152 Ma） and equigranular（133~141 Ma） granites of Qianlishan batholith respectively within the determination error, and mineralization of Hongqiling deposit is dominately associated to equigranular granites of Qianlishan batholith.