摘要
通过对小秦岭金矿带容矿围岩(太华群)的原岩建造、形成环境的研究,及太华群和燕山期花岗岩含金性的评价,本文认为小秦岭金矿带的金及其他成矿元素来自太华群,燕山期花岗岩只起到热液叠加改造成矿的作用。同时研究了控(容)矿断裂的性质、矿床地球化学特征,认为小秦岭金矿床为赋存于右旋逆冲型次级韧—脆性剪切带中的变质热液型金矿床。文中提出了成矿模式。
Through a systematic study on the primary rock formation of the Archean ore-hosted wallrock (Taihua Group) of theXiaoqinling gold ore belt,the ore-forming environment and the evaluation of the gold ore potentiality of the Taihua Group andYenshanian granite,it is believed that the gold and other ore-forming elements are orignated from the Taihua Group and theYenshanian granite only plays a role of superimposed hydrothermalism and reworking.It has been also shown from the features ofthe ore controlling (ore-hosted) fractures and geochemical characteristics of the deposits that the Xiaoqinling gold deposit occurredin secondary ductile-brittle shear zone belongs to metamorphic-hydrother(?)ype.A metallogenic pattern for the deposit is sug-gested in this paper.
出处
《地质与勘探》
CAS
CSCD
北大核心
1993年第4期1-6,32,共7页
Geology and Exploration
