摘要
胶东金成矿域有三种不同类型的金矿，胶莱盆地烃金双源层中的层控金矿床是新发现的金矿类型。烃金双源层是在盆地形成初期陆相局限水体中富金及富含有机质岩石，在成岩及热液作用中，Ａｕ 与油气同时活化，经水油岩反应体系作用形成矿床。在燕山晚期受构造岩浆活动及复杂成矿热液加富加大，使胶东有可能形成超大型金矿床的类型。崖子地区是可望突破寻找超大型金矿床的靶区。
There are three types of gold deposit in Jiaodong gold metallogenetic domain. The stratabound gold deposit is a new type, which occurred in hydrocarbon gold two sources bed enriched in gold (Au 174 ng/g) and organic carbon (0.007%～4.225%). At diagenesis and hydrothermal process stages, the water and oil were simultaneously activated and the stratabound gold deposits were formed from the reaction between water oil and rocks. In the late Yanshan, the tectonomagmation produced complex ore forming hydrothermal solutions and then made the gold orebody enlarged and enriched. Therefore, there is most possibility for this type of gold deposit to be superlarge.
出处
《地球化学》
CAS
CSCD
北大核心
1999年第3期203-212,共10页
Geochimica
基金
国家攀登计划资助!(编号:攀登A3011)
关键词
金矿床
矿床成矿
找矿远景
成矿域
胶莱盆地
gold metallogenetic domain, hydrocarbon gold two sources bed, water oil rock reaction, superlarge gold deposit, prospecting, Shandong Province
