广西河池北香银多金属矿床同沉积断层的厘定及其发现意义  

ASCERTAINMENT AND DISCOVERY SIGNIFICANCE OF SYN-SEDMENTARY FAULTS IN THE BEIXIANG SILVER POLYMETALLIC ORE DEPOSIT IN HECHI, GUANGXI PROVINCE

作　　者：何国朝[1] 

机构地区：[1]桂林矿产地质研究院,桂林541004

出　　处：《地质与勘探》2005年第4期6-9,共4页Geology and Exploration

基　　金：国家重点基础发展规划(国家973)项目(编号:C2001CB409806)资助。

摘　　要：广西河池北香银多金属矿床已经进行了20多年的找矿勘探,基本探明了1～6号脉状矿体,但在找矿理论、矿床资源量上均未能取得实质性的突破,矿床资源也因此未能获得开发利用.通过工作,在矿区内发现了一组具有长期持续活动并控制着矿区内的沉积作用和后期构造活动特征的北西向同沉积断层,已知矿体的产状、空间分布均明显受到该同沉积断层的控制,因此该组构造具有控岩控矿特征.对比显示本矿区同沉积断层与大厂矿田的同沉积构造及其控矿特征具有相似性,在该组同沉积断层的上盘尤其与南北向、北东向构造交汇的部位是成矿的有利地段,脉状矿体的下部可能存在层状矿体.该组同沉积断层的发现开拓了北香地区找矿思路,为今后找矿勘探指明了方向.Beixiang silver polymetallic ore deposit in Hechi of Guangxi province has gone through twenty years prospecting and exploration. Even though six vein orebodies have been explored, there are not more development in prospecting theory and total mineral resources. During the recent two years, we have found out a group of syn-sedimentary faults from south to north in the mining area. The syn-sedimentary faults have been active for a long time, which control sedimentation, succeeding structure, orebody occurrence and spatial distribution in the mining area. The faults have rock-and ore-controlling characters. Compared with Daehang ore field, ore-controlling syn-sedimentary faults are similarity. The ore-forming favorable place is in the upper side of syn-sedimentary fault, especially in convergence place of south -north and east-north direction structures. Stratabound orebodies maybe exist under the vein ores. Discovery of syn-sedimentary faults is important for exploring new ore deposit in the future.

关 键 词：北香银多金属矿 大厂矿田 同沉积断层 控矿作用 层状矿 

分 类 号：P618.52[天文地球—矿床学] P618.4[天文地球—地质学]