摘要
太白维山大型银矿床为典型的中低温火山潜火山隐爆角砾岩型银矿床。其水系沉积物异常强度高、面积大、元素套合好,Ag、Pb、Zn、Mn等单元素异常中心与矿床的产出部位一致。利用1∶20万水系沉积物资料,在各单元素异常成图的基础上筛选出主成矿因子得分图、相似距离评价法、以及AgCuPbZnCd/(Cu+Zn+Pb)、AgPbZnCd/(AuCuCoNi)等异常综合指标,应用到其他银多金属矿化区。
Taibaiweishan large sized silver deposit is a typical cryptoexplosive breccia type deposit of low to moderate temperature volcanics subvolcanics. The characteristic of its stream sediment anomaly is high anomaly intensity, large area and good identity of concentration centres for elements. The concentration centres of Ag, Pb, Zn and Mn etc. are identical to the occurrence of the deposit in space. On the basis of graphing diagrams of element anomalies by using data of 1∶200000 stream sediment measurement in the area, the score map of main metallogenic factor, evaluation method of correlation distance, AgCuPbZnCd/(Cu+Pb+Zn) and AgPbZnCd/(AuCuCoNi) synthetic indexes of anomaly etc. are chosen as composite anomalous indicatrices. Furthermore, these indicatrices are ultilized in other areas and some good results are obtained.
出处
《现代地质》
CAS
CSCD
北大核心
1997年第2期183-190,共8页
Geoscience
关键词
银矿床
化学成分
水系沉积物
综合异常信息
矿化
Taibaiweishan, silver deposit, factor score, evaluation method of correlation distance, composite anomalous indicatrices