华北陆台北缘金矿类型及成矿区带  

GOLD METALLOGENIC BELTS AND ZONES IN THE NORTH CHINA PLATFORM AND TYPES OF THE GOLD DEPOSITS

作　　者：李宏臣 

机构地区：[1]天津地质研究院,天津300061

出　　处：《地质找矿论丛》2001年第3期167-172,205,共7页Contributions to Geology and Mineral Resources Research

基　　金：原冶金工业部重点科技项目 ( 0 7-14 )部分成果

摘　　要：根据华北陆台北缘金矿的赋存部位和富集特点 ,划分出 9种金矿类型。金矿的形成主要受韧性剪切带控制 ,多形成于韧脆性剪切带的上部 ;金的迁移和富集经历 3个阶段 :( 1)地体表壳岩矿源层形成阶段 ;( 2 )地体拼贴期韧性剪切带形成阶段 ;( 3 )中生代、部分古生代岩浆 -构造带形成阶段。控制金矿分布的是古生代近 EW向和燕山期 NE向构造带 ,主要为继承早期地体拼贴边界的长寿断裂。金矿集中区位于长寿断裂的交汇部位。Based on location of gold deposits and Au enrichment characteristics Au deposits at the north margin of the north China platform are devided into 9 types. Formation of the gold deposits is controlled by ductile shear zones and they occur generally at the upper ductile britlle zone. Gold was mobilized and enriched in 3 stages: the first stage--formation of supercrustal rock (source bed); the second stage--formation of ductile shear zone during montage of terranes and the third stage--formation of mesozoic and some palaeozoic magmatic-tectonic belts. Arrangement of the gold deposits is mainly controlled by EW (Palaeozoic) and NE (Yanshanian) tectonic belts which are generally the long lived inheritable fractures at boundaries of montaged terranes and gold ore deposits are concentrated at intersection of the long lived fractures.

关 键 词：金矿床 矿床类型 成矿区带 华北陆台 韧性剪切带 控矿构造 古生代 

分 类 号：P618.51[天文地球—矿床学]