甘肃洛坝铅锌矿床的构造控矿作用  

FAULT CONTROLLING IN LUOBA LEAD-ZINC DEPOSIT,GANSU PROVINCE

作　　者：祝新友[1] 汪东波[2] 卫治国[3] 

机构地区：[1]北京矿产地质研究院,北京100012 [2]中国地质科学院地质研究所,北京100037 [3]甘肃有色地质勘查局106地质队,兰州730000

出　　处：《地质与勘探》2005年第6期38-41,共4页Geology and Exploration

基　　金：中国地质调查局科研项目(编号:G1999043200)资助

摘　　要：甘肃洛坝铅锌矿床矿体形态复杂,长期存在“背斜控矿”与“单斜控矿”的争论。矿体及赋矿岩石夹持于区域性的黄渚关断裂与江洛—人土山断裂间,两断裂在矿区相距不足1 km,矿床整体处于其间的断裂破碎带中。层状矿体形成后遭受了强烈的构造挤压变形改造,相当一部分“千枚岩”为强挤压的断层岩,其中含有灰岩及矿石角砾。矿体不再是简单的“秦岭型”铅锌矿的背斜控矿或单斜控矿,而是受控于断裂破碎带。对矿区控矿断裂的研究将有助于已知矿体的开采和深部与外围地区盲矿的勘探。The fault-controlling characteristics is discuss in Luoba lead-zinc deposit, Gansu province. The shape of ore-bodies at the deposit is very complicated and there are differences reorganizations about the ore-body occur. The deposit is located between the two regional EW faults that are less than 1 kilometer apart. Ore-bodies occur in the fault zone and stratiform ore was reshaped in structure movement, Most of phyllite is considered as fracture breccias rock which includes limestone and ore breccias. The shape of the ore-bodies is controlled mainly by fault zone but not by anticline or monocline. It is significant that lead-zinc ore exploring in the near or deep of the deposit.

关 键 词：甘肃 铅锌矿床 控矿因素 

分 类 号：P618.42[天文地球—矿床学] P618.43[天文地球—地质学]