新疆西准噶尔地区金矿成矿规律及其找矿方向  

Metallogenic rule and prospecting orientation of gold deposits in western Junggar,Xinjiang

作　　者：王治华[1] 张勇[1] 王科强[1] 喻万强[1] 张国利[1] 黄辉[1] 马德锡[1] 

机构地区：[1]中国人民武装警察部队黄金地质研究所

出　　处：《黄金》2008年第6期13-18,共6页Gold

基　　金：国土资源大调查项目资助(资[2005]003号)

摘　　要：西准噶尔地区是新疆最好的金成矿域,区内己发现金矿床、矿点近200余处。该地区金矿床有两种成因类型:一是火山晚期热液型,二是岩浆期后中低温热液型。赋矿地层主要为古生界中上石炭统包古图组和太勒古拉组,赋矿岩系为火山碎屑岩,华力西中晚期的中酸性岩浆侵入活动与金矿的关系非常密切。北东向的深大断裂为主干断裂,是主要的导矿构造,控制和限定了带内金矿的分布及产出,北西、近东西、北东向的次级断裂是主要的成矿、容矿构造。东西向构造与北东向主干断裂交汇地段和中酸性侵入体内部、边部、接触带是本区最主要的金矿找矿方向。Western Junggar is the best gold-metallogenic region in Xinjiang. In this area, nearly 200 gold deposits （spots） have been discovered and divided into two genesis types, namely late-stage volcanic hydrothermal and postmagmatic medium-low-temperature hydrothermal. The host strata are Paleozoic group, middle-upper Carboniferous Baogutu Formation and Tailegula Formation, while the host-rock are pyroclastic rock. There is a close relationship between the activities of medium-acid magma in mid-late Hercynian and the gold deposits. NE key faults, which are deep and large, are main structures as passageway for ore fluid and they controlled and restricted the orebodies＇ distribution and occurrences. Subsidiary faults, trending NW, nearly-EW and NE, are main ore-forming and host structures. The most favorable ore-prospecting areas are the junctures of EW faults and NE faults and the inner, side and contact of medium-acid intrusives.

关 键 词：金成矿带 成矿规律 岩浆期后热液 断裂构造 找矿方向 西准噶尔地区 

分 类 号：P618.51[天文地球—矿床学]