滇西北兰坪金顶超大型矿床研究新进展:侵位角砾岩的发现及其地质意义  

New progress in study of superlarge Jinding Pb-Zn deposit:Discovery of intrusive breccia and its geological implications

作　　者：高兰[1] 王安建[2] 刘俊来[3] 修群业[2] 曹殿华[1] 翟云峰[3] 

机构地区：[1]中国地质科学院矿产资源研究所,北京100037 [2]中国地质科学院全球矿产资源战略研究中心,北京100037 [3]中国地质大学,北京100083

出　　处：《矿床地质》2005年第4期457-461,共5页Mineral Deposits

基　　金：国家重点基础研究发展规划项目(2002CB4126007);国家科技攻关项目(2003BA612A_05)的联合资助

摘　　要：兰坪金顶超大型矿床各种角砾岩和角砾岩型矿体十分发育,通过对角砾岩型矿体形态、产状、与围岩接触关系和角砾岩自身结构特点的研究,作者首次发现并提出灰岩角砾岩型矿体是一种侵位角砾岩,其形成机制类似于现代泥火山。There are many breccia-type orebodies in the Jinding lead-zinc ore district, in which the authors found for the first time intrusive breccia-type orebodies. Studies show that the original rock of the limestone breccia-type orebody is a kind of intrusive breccia. Instead of a kind of Paleocene continental sedimentary breccia, it is a halffluid mixture of oil, lead-zinc carbonate and gypsum-solution rubbles, and its origin is similar to that of modern mud volcano. The longitudinal axial fracture zone of Lanping basin is a mud-volcano conduit, and the intrusive breccia type lead-zinc orebody with “concrete characteristics” was formed in the upright fractural zone of Jinding district.

关 键 词：地质学 侵位角砾岩 铅锌矿床 超大型 兰坪金顶 

分 类 号：P618.42[天文地球—矿床学] R618.43[天文地球—地质学]