Discovery of Late Carboniferous Strata near Aonaodaba Cu-Ag-Sn Deposit in Eastern Inner Mongolia
详细信息
- 责任者：Jiang Sihong (Key Laboratory of Metallogeney and Mineral Assessment ; MLR ; Institute of Mineral Resources ; CAGS ; Beijing 100037 ; China) ; Nie Fengjun
- 刊名：Mineral Deposits
- 出版年：2012
- 卷期：31(1)
- 关键词：晚石炭世 ; Upper Carboniferous ; 铀—铅计时 ; U-Pb dating ; 内蒙古 ; Inner Mongolia
- 页码：p.161-164
- 图表：3 illus., 1 table, 18 refs.
- 分类号：1200
- issnNo：ISSN0258-7106
- isbnNo：CN11-1965/P
摘要
Most economically important medium-to large-sized Ag-polymetallic deposits occurring in south-central part of the Da Hinggan Mountains in east Inner Mongolia are hosted by Permian strata. The LA-MC-ICP-MS dating of zircons from tuffaceous slate outcropped in the western part of the Aonaodaba Cu-Ag-Sn deposit yielded an U-Pb age of (302.6±1.9) Ma with MSWD being 2.0, which indicates that the original rock of the tuffaceous slate was formed in late Carboniferous instead of in Permian considered by previous researchers.