- 责任者：Tian Shihong (Institute of Mineral Resources ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Yang Zhusen
- 刊名：Acta Petrologica et Mineralogica
- 出版年：2011
- 卷期：30(3)
- 关键词：铅锌矿床 ; lead-zinc deposit ; 推覆构造 ; nappe structure ; 铷—锶计时 ; Rb-Sr dating ; 钐—钕计时 ; Sm-Nd dating ; 青海 ; Qinghai Province
- 页码：p.475-489
- 图表：10 illus., 4 tables, 25 refs.
- 分类号：1001
- issnNo：ISSN1000-6524
- isbnNo：CN11-1966/P
Located in the northeast margin of Qiangtang terrane between Jinshajiang suture zone and Bangonghu-Nujiang suture zone, the Dongmozhazhua and Mohailaheng Pb-Zn deposits in Yushu area of Qinghai Province are typical Pb-Zn deposits in the Cu-Pb-Zn polymetallic mineralization belt within the northern part of the Nujiang-Lancangjiang-Jinshajiang area. Although these Pb-Zn deposits are in the front belt of Yushu thrust nappe system, the connection between Pb-Zn ore deposits and thrust nappe system remain unclear. Field investigations show that calcite is milk white in color, macrocrystalline, irregular and sack-like in form and is intersected by late mineralization. It was formed during the transitional stage from the compression stage (thrust nappe stage) to the extension stage (mineralization stage) and can be regarded as the link between Pb-Zn ore deposits and the thrust nappe system.