甘肃北祁连西段朱龙关裂谷带地质特征及典型矿床  

The geological character and typical deposit of Zhulongguan fault rift zone in the west of North Qilian,Gansu

作　　者：东建星[1] 李杰[1] 林森[1] 司雪峰[1] 

机构地区：[1]甘肃有色地质勘查局四队,甘肃张掖734012

出　　处：《桂林工学院学报》2002年第3期341-344,共4页Journal of Guilin University of Technology

基　　金：国土资源部国土资源大调查项目 (2 0 0 0 10 2 0 0 15 11)

摘　　要：北祁连西段朱龙关裂谷带为一古老裂谷带 ,带内主要赋矿地层为镜铁山群及朱龙关群 ,以基性为主的火山岩十分发育 ,经历了多次构造活动 ,变形强烈 ,加里东期有二长花岗岩侵入 ,成矿作用复杂 ,该带是寻找火山喷发沉积改造型铁矿、铁铜矿、层控叠加钨矿矿床的有望地段 .带内典型矿床小柳沟铜钨矿床是继塔儿沟钨矿床之后又一重大发现 ,矿床产于朱龙关群中 ,矿区地层由朱龙关群不同岩段共同构成“D”型穹隆构造 ,断裂发育 ,矿化受地层、构造、隐伏岩体控制 .已知矿体的走向及纵深方向。Zhulongguan fault rift zone in the west of North Qilian is an old fault rift zone.The mineralization layer belongs to Jingtieshan group and Zhulogguan group.The basic extrusive rock is very common.With many times of tectonic movements,the rock formation changes.The mineralization action was complex.The zone is rich with extrusive blow deposits.The deposit in the zone-Xiaoliugou tungsten polymetallic deposit is a very important discovery following the finding of Ta'ergou tungsten deposit.The layer is Zhulongguan group.There is a 'D' fornix structure with many rifts in the mining area.The mineralization is controlled by layer structure and hidden rock mass.The direction of mine seeking is the alignment of ore bodies in the zone with many quartz net ranges.

关 键 词：钨多金属成矿带 裂谷带 “D”型穹隆构造 甘肃 找矿方向 

分 类 号：P618.67[天文地球—矿床学]