甘肃省肃北县二段井金铅矿地质特征及成因浅析

Geological characteristics and genesis of gold lead ore in the second member well of Subei County, Gansu Province

二段井金铅矿大地构造位置位于甘肃北山地区。其大地构造位置属于塔里木陆块区敦煌陆块的柳园裂谷。区域构造线总体展布方向为近北西西向,该区经历了多期次的构造运动和岩浆热液活动。在成矿区划上属于小独山-白山堂钨-金(银)-铜(铅、锌)-铁-钼-铬-稀土-菱镁矿-萤石成矿亚带。其成矿与地层、构造、岩浆活动具有一定的相关关系。通过研究构造背景,成矿地质特征等,对二段井金铅矿地质特征进行了初步分析讨论成因。

The geotectonic location of the second member well is located in Beishan area,Gansu Province.Its geotectonic location belongs to Liuyuan rift of Dunhuang block in Tarim block.The overall distribution direction of the regional tectonic line is nearly northwest,and the area has experienced multiple tectonic movements and magmatic hydrothermal activities.It belongs to xiaodushan Baishantang W-Au (Ag)-Cu (Pb,Zn)-fe-mo-cr-re-magnesite-fluorite metallogenic subzone.Its mineralization is related to strata,structure and magmatism.Based on the study of tectonic background and metallogenic geological characteristics,the geological characteristics of gold lead ore in the second member well are analyzed and discussed.