新疆西天山吐拉苏火山盆地金矿的构造控矿规律  

PATTERNS OF STRUCTURAL CONTROLS ON GOLD DEPOSITS IN TULASU VOLCANIC BASIN,WEST TIANSHAN, XINJIANG

作　　者：张桂林[1] 梁金城[1] Nick Hayward 漆树基 

机构地区：[1]中南大学资源环境与建筑工程学院 [2]西澳矿业公司勘探部 [3]新疆地质矿产局第一区调队,乌鲁木齐830011

出　　处：《地质与勘探》2002年第5期24-29,共6页Geology and Exploration

摘　　要：新疆西天山吐拉苏火山盆地金矿在不同尺度上受不同级别的构造控制。在大地构造尺度上 ,Ⅰ级控矿构造为与博罗科努古生代岛弧带平行的NWW向基底断裂带 ,该断裂带控制与石炭纪火山岩有关的金矿带的展布。在区域尺度上 ,Ⅱ级控矿构造为NW向走滑断裂和NE向张性断裂 ,控制金矿床的分布。在矿床尺度上 ,Ⅲ级控矿构造为陡倾的近SN向张性断裂和与破火山口有关的环状断裂 ,控制金矿体的定位和产状。Gold deposits in Tulasu volcanic basin, West Tianshan, Xinjiang, are controlled by different order structures on different scales. On tectonic scale, the first-order structural control is NWW basement fracture zone, which is parallel to Borohoro Paleozoic arc. The NWW basement fracture zone defines the gold mineralization province, which is associated with Carboniferous volcanic rocks. On regional scale, the second-order structural controls are NW strike-slip fractures and NE extensional fractures, which control the distribution of gold deposits. On deposit scale, the third-order structural controls are steep-dipping near SN tensile faults and caldaria ring, which control the location and occurrence of ore bodies.

关 键 词：吐拉苏火山盆地 控矿规律 金矿床 天山 张性断裂 环状断裂 

分 类 号：P618.51[天文地球—矿床学]