Molybdenite Re-Os Isotope Age and Metallogenic Significance of Sebuta Copper Molybdenum Deposit in Tibet
详细信息
- 责任者：Huang Hanxiao (Chengdu Institute of Geology and Mineral Resources ; Chengdu 610081 ; China) ; Li Guangming
- 刊名：Acta Geologica Sinica
- 出版年：2013
- 卷期：87(2)
- 关键词：铜矿 ; copper ores ; 钼矿 ; molybdenum ores ; 铼—锇计时 ; Re-Os dating ; 冈底斯山 ; Gangdise Range
- 页码：p.240-244
- 图表：illus., 1 table, 30 refs.
- 分类号：1001
- issnNo：ISSN0001-5717
- isbnNo：CN11-1951/P
摘要
Sebuta Cu-Mo deposit is located in the north of Gangdese metallogenic belt. It has the characteristics of porphyry copper-molybdenum deposit such as veinlets disseminated mineralization,wall-rock alteration and development etal. This article uses inductively coupled plasma mass spectrometry TJA X-series ICP-MS for the molybdenite Re-Os isotopic dating of granite porphyry in Sebuta, obtained six samples model age is 87.52 ± 1.35～88.8 ± 1.26Ma,and isochron age is 88.8 ± 1. 5 Ma. It shows that the mineralization age of sebuta copper-molybdenum is early Late Cretaceous, and it is the tectonic-magmatic product of Yanshan stage.
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