Discussion on Petrogenetic and Ore-Forming Ages of Machangqing Porphyry-Type Copper—Molybdenum—Gold Orefield, Western Yunnan
详细信息
- 责任者：Guo Xiaodong (Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Wang Zhihua
- 刊名：Geological Review
- 出版年：2011
- 卷期：57(5)
- 关键词：斑岩铜矿床 ; porphyry copper deposit ; 斑岩钼矿床 ; porphyry molybdenum deposit ; 金矿 ; gold ores ; 云南 ; Yunnan Province
- 页码：p.659-669
- 图表：5 illus., 3 tables, 27 refs.
- 分类号：1001
- 出版序号：414
- issnNo：ISSN0371-5736
- isbnNo：CN11-1952/P
摘要
Systematic geochronological study on the petrogenetic and metallogenic ages of the Machangqing porphyry-type copper-molybdenum-gold orefield,western Yunnan Province has been discussed in this paper. The research reflect that theⅡperiod magmatic combination whose emplacement age is from 33 to 36 Ma, consisting of syenite porphyry+monzonite porphyry+granitic porphyry+ porphyritic granite, is the ore-forming geological body and supplies materials, fluid and dynamic for copper-molybdenum-gold mineralization. The porphyry-type copper-molybdenum mineralization whose age is 35.8 Ma, Luandongshan skarn-type gold mineralization and Rentouqing tectonite-type gold mineralization form at the early-middle stage of Ⅱ-period magma activity.