摘要
通过分析皖南休宁天井山金矿床和小贺铅锌矿床的构造控矿因素,认为燕山晚期花岗岩和北东向断裂是安徽休宁—歙县东南部地区金多金属矿形成最重要的控矿因素。歙县南源口和休宁桃溪两个地段的构造分析表明,该区中生代以来至少经历四期构造变形,其中早期向北西的逆冲推覆和北—北东向左行平移断层是成矿前构造;燕山晚期北东向高角度正断层控制燕山晚期花岗岩类侵入和成矿,是成矿期构造;随后的右行平移断层为成矿后构造。
By studying on the ore-controlling structural factors of the Tianjingshan gold deposit and Xiaohe lead-zinc deposit in Xiuning, Anhui Province, it is considered that the late Yanshanian granite and NE-trending faults are the most important ore-controlling factors of the gold polymetallic mineralization. Detailed structural analysis of Nanyuankou in Shexian and Taoxi in Xiuning indicates that since the Mesozoic Era, the two areas experienced four deformation stages. Among them, early northwestern thrusting and NNE-trending strike-slip fault were Pre-mineralization structures, and the NE-trending high-angle normal fault that controlled the intrusion and mineralization of late Yanshanian granite was mineralization structure. And the following right-lateral strike-slip faults were post-mineralization structure.
出处
《华东地质》
2016年第4期259-265,共7页
East China Geology
基金
安徽省国土资源厅"皖南构造带形成演化及其与成矿关系"(项目编号:2012-g-38)和"休宁-歙县整装勘查区构造编图及金矿靶区优选"(项目编号:2014-g-1)资助
关键词
休宁—歙县东南部地区
天井山
金多金属矿
控矿构造
southeastern Xiuning-Shexian area
Tianjingshan
gold polymetallic deposit
ore-controlling structure
