西昆仑卡拉牙斯卡克Pb——Zn——Cu 多金属矿床控矿构造及成矿模式

运用地质与地球化学方法，对西昆仑卡拉牙斯卡克矿区控矿构造及成矿模式进行了研究。矿床地球化学测试δ34 S 为－ 5. 3‰ ～ － 32. 6‰，206 Pb /204 Pb 为17. 712 ～ 18. 082，207 Pb /204 Pb 为15. 358 ～ 15. 664，208Pb /204Pb 为37. 513 ～ 38. 399。分析显示，泥盆-石炭纪时期深部成矿物质在构造或其他动力的作用下沿区域深大断裂上涌至地表，与碎屑物质共同沉淀形成矿源层。后经主要成分为天水的流体萃取，形成含矿热液，然后在矿区构造系统中运移、富集成矿-即区域构造控制矿源层形成。矿区内低角度逆掩断层( 导矿构造) 和高角度逆冲断层及其派生的次级节理裂隙( 容矿构造) 控制矿体的形成。

Ore-controlling structure and metallogenic model of Kalayasikake Pb-Zn-Cu polymetallic deposit in West Kunlun

The authors studied the ore-controlling structure and metallogenic model of Kalayasikake of West Kunlun using geological and geochemical methods. Research on deposit geochemistry found ^δ34S as -5. 3‰-32.6‰,^206Pb/204pb as 17.712 - 18. 082,^207Tpb/^204pb was 15. 358 - 15.664 and ^208spb/^204 npb as 37.513 -38. 399 in contents. The research showed that deep-metallogenic materials upwelled to surface along with the deep faults as to tectonic force or others during Devonian-Carboniferous, and deposited with detrital materials to form source beds. After that, the hydrotherm formed by the extraction with atmospheric rainwater, and then transported and concentrated, that was the formation of ore source bed. The mild-overthrust fault （transmitting ore structure ） and the steep-thrust fault including the joint-fissure came from it （ ore-hosting structures） in the mining area controlled the formation of ore body.