东准噶尔卡拉麦里地区韧-脆性剪切带,形成于陆-陆碰撞体制,在330～265Ma期间,受挤压伸展体制转换影响,先后经历了韧、脆性构造变形.通过对与该韧-脆性剪切带有关的金矿床的流体包裹体、同位素组成研究表明:包裹体以气液相为主,均一温度集中在160～240℃,成矿流体盐度w(NaCl)为3.55%～4.5%;成矿流体氢、氧同位素组成表明成矿流体的水为变质成因水;金属硫化物硫同位素δ34S值为3.54‰～10.68‰,显然属于混染硫;黄铁矿包裹体氦氩同位素3He/4He值为0. 18～2.18 Ra,属幔壳混源.综合研究认为,金矿成矿在时间、空间上严格受韧-脆性剪切构造变形带控制.
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