青海德尔尼铜(钴)矿床研究新进展  

Progress in the Research of De'erni Cu(Co) Ore Deposit

作　　者：焦建刚[1] 黄喜峰[1] 袁海潮 陈博[3] 孙涛[1] 刘瑞平[3] 

机构地区：[1]长安大学地球科学与资源学院,陕西西安710054 [2]西北有色地质勘查局712总队,陕西咸阳712000 [3]西安地质矿产研究所,陕西西安710054

出　　处：《地球科学与环境学报》2009年第1期42-47,共6页Journal of Earth Sciences and Environment

基　　金：国家自然科学基金项目(40702015)

摘　　要：以大比例尺地质填图和实测剖面工作为基础,通过野外详细地质观察,室内电子探针分析对比,再结合前人研究成果,论述了德尔尼铜(钴)矿床成矿晚于超基性岩,矿床主体为海底喷流沉积成因,同时经历了热液叠加成矿作用和构造变位。其成矿过程为:在拉张环境下,蛇绿岩破碎,同时发生了海底喷流—沉积作用,喷流物质沿蛇绿岩中的构造破碎带喷出与沉积,并萃取了超基性岩中大量的钴,矿体形成后又经历了构造变位。Based on geological mapping and profiling combining with existing study achievements,the authors consider that the mineralization of De＇erni Cu（Co） ore deposit should be later than its ultra-basic country rock.The genesis of De＇erni ore deposit is mainly submarine exhalation-sedimentation,and it experiences later superimposed hydrothermal mineralization.The metallogenic process is such that in extensional tectonic setting,submarine exhalation-sedimentation occurs,the ophiolite breaks up,exhalative materials emplace in the ultra-basic rock along fault belt and extract large mount of Cobalt element from ultra-basic rock.Then,the ore bodies experience complicated tectonic events.

关 键 词：矿床成因 成矿过程 海底喷流—沉积 德尔尼 青海省 

分 类 号：P618[天文地球—矿床学]