青海省格尔木市西大滩东多金属矿控矿因素及找矿前景

青海省格尔木市西大滩东多金属矿出露地层主要为早-中三叠世昌马河地层走向呈北西~南东向,与区域构造线方向基本一致。是测区的主要矿源层,为后期矿化提供了物质基础。比较发育的北西向、北西西向逆断层具有明显的多期活动特点,多形成破碎带,为热液活动、成矿元素富集提供了良好空间,对本区矿化起着一定的控制作用,破碎蚀变带控制了土壤异常展布。本文对西大滩东多金属矿控矿因素及找矿前景进行分析探讨。

Ore controlling factors and prospecting prospect of polymetallic ore in the east of Xidatan,Golmud City,Qinghai Province

The exposed strata of Xidatan East Polymetallic Mine in Golmud City,Qinghai Province are mainly the Changmahe formation of early Middle Triassic,which is oriented from northwest to Southeast,basically consistent with the direction of regional structural line.It is the main source bed of the survey area and provides material basis for later mineralization.The relatively developed NW and NW trending reverse faults have obvious characteristics of multi-stage activity,and most of them form fracture zones,which provide a good space for hydrothermal activity and enrichment of ore-forming elements,play a certain role in controlling mineralization in this area,and the fracture alteration zones control the abnormal distribution of soil.In this paper,the ore controlling factors and prospecting prospects of the polymetallic ore in the east of Xidatan are analyzed and discussed.