胶莱盆地东北缘金矿床主要类型与找矿远景评价

Major Types and Propecting Future of Gold Deposits in Northeast Jiaolai Basin

摘要:

通过对胶莱盆地东北缘地质条件、地球物理场、区域化探特征的分析 ,建立了蓬家夼、发云夼 (宋家沟 )金矿的地质物探化探综合模式剖面 ,初步总结了成矿规律 ,指出了找矿远景区段。蓬家夼、发云夼 (宋家沟 )两种类型金矿尽管在成矿构造部位、成矿类型和前期矿质聚集过程等存在一定差异 ,但二者成矿时间和成矿过程具有相似性 ,系同一期成矿作用所致 ,其成矿时间大约为 10 0 .59Ma ,属燕山运动晚期的产物。

Abstract:

Through the ananlysis of geological conditions, geophysical field and geochemical characteristics in northeast Jiaolai basin, geological-geophysical-geochemical comprehensive model (profile) of Pengjiakuang and Fayunkuang gold deposits has been set up, ore-forming rule primarily summarized, and prospecting future areas pointed out as well. Although there are some differences in orebody occurences, ore-forming types and early gold-concentrates process of early period; and better conforming in ore-forming tim...