• 责任者：Han Kui (State Key Laboratory of Continental Dynamics ; Department of Geology ; Northwest University ; Xi’an 710069 ; China) ; Luo Jinhai
• 刊名：Mineral Deposits
• 出版年：2012
• 卷期：31(3)
• 关键词：铅锌矿床 ; lead-zinc deposit ; 角砾岩 ; breccia ; 四川 ; Sichuan Province ; 云南 ; Yunnan Province ; 贵州 ; Guizhou Province
• 页码：p.629-641
• 图表：6 illus., 3 tables, 57 refs.
• 分类号：1001
• issnNo：ISSN0258-7106
• isbnNo：CN11-1965/P

Ore-bearing breccias commonly exist in lead-zinc deposits in the Sichuan-Yuanan-Guizhou border area. On the basis of a comprehensive study of the genetic classification of breccias and the field geological investigation in key deposits, the authors studied the features of ore-bearing breccias in lead-zinc deposits in the Sichuan-Yuanan-Guizhou border area. The results demonstrate that most of the ore-bearing breccias show features of extensional breccias, with compressional breccias seen in a few deposits. Through combining geological evolution of this area with the metallogenic epochs of the existing typical lead-zinc deposits based on isotope dating data, the authors roughly infer that there have existed at least two extensional tectonic events in this lead-zinc ore district since the middle Permian Maokou period.