Caledonian Diagenetic and Metallogenic Events in Datong District in the osoft-com:office:smarttags" />Western Kunlun : Evidences from LA-ICP-MS Zircon U-Pb Dating and Molybdenite Re-Os Dating
详细信息
- 责任者：Yu Xiaofei (Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Sun Fengyue
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(6)
- 关键词：铜矿 ; copper ores ; 钼矿 ; molybdenum ores ; 铀—铅计时 ; U-Pb dating ; 铼—锇计时 ; Re-Os dating ; 昆仑山 ; Kunlun Mountains
- 页码：p.1770-1778
- 图表：5 illus., 3 tables, 35 refs.
- 分类号：1001
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
Busilajin Cu-Mo occurrence is the new found magmatic hydrothermal vein-type Cu-Mo deposit in Datong district. With LA-ICP-MS zircon U-Pb dating to ore-bearing biotitic adamellite and graniteaplite in Busilajin, diagenetic ages are 446 Ma and 449 Ma respectively. Using molybdenite Re-Os dating in it,metallogenic age is (435±25) Ma. It was shown that metallogenesis is later than diagenesis. Metallogenesis is related with complex evolution of paleo-Asia structural domain and Tethys structural domain. This large scale mineralization in Middle Caledonian may derive from strong magmatic activities and metallogenesis under local extended settings after accretionary orogenesis and crust thickening in the western Kunlun.