新平大红山铜矿二期基建探矿控矿构造特征

CHARACTERISTICS OF STRUCTURE CONTROLLING ORE OF EXPLORATION IN CAPITAL CONSTRUCTION OF PERIOD 2 OF DAHONGSHAN CU DEPOSIT,XINPING

二期基建揭露的断层按其产出方向分为四个组:NWW向的正断层,NNE向的平移正断层,NE^NEE向的正断层,NW向的矿区断层F3;按形成时间可分为早期断层和晚期断层,除边界断层F3外均为早期断层。早期断层又按其切错关系,可分为5个活动期次。断层构造将矿体沿走向切错成条块状,沿倾向切错成阶梯状排列,形成堑、垒式构造,对矿床开采产生较大的影响。

The faults discovered in the capital construction of period 2 can be divided into 4 groups according to the distribution direction as follows： 1. NWW normal fault; 2. NNE strike - slip normal fault; 3. NE - NEE normal fault; 4. NW fault of coalfield F3. And they can be divided into earlier and later ones according to the formation period, which all are the earlier faults except the later fault F3. According to the interception relationship, the earlier faults can be divided into 5 faulting periods, ie ： period 1 - 1 ; 1 - 2 ; 2 - 1 ; 2 - 2 ; 3 - 1. These faults cause the ore body to be strip or fragment in striking; stepwise in dipping, graben - horst structure, which have the important influence on the development of the ore deposit.