西北地质2024，Vol.57Issue(2)：184-196,13.DOI:10.12401/j.nwg.2023169
厄立特里亚GASH金矿集区地球化学特征及信息提取
Geochemical Characteristics and Information Extraction in GASH Ore Concentration Area,Eritrea
摘要
Abstract
GASH Au ore concentration area belongs to Bisha gold metallogenic belt in West Eritrea,with a good regional metallogenic setting.The geochemistry of stream sediment mapping at scale of 1∶100,000 indi-cate:Au,Hg,As,W,Bi are characteristic of strong-differentiated distribution,Au,As,Sb,W are characteristic of strong-rich distribution,showing a good prospecting for Au exploration.Through the correlation analysis,F5 factor(Au-Hg association)is confined to guide the Au exploration,F2 factor(Ag-Bi-Mo-W association)and F3 factor(As-Sb-Pb association)which are confined to guide the distribution of fault structures,F1 and F4 factor are confined to guide the distribution of basic and ultrabasic geological unit.with the anomaly information ex-tract from F5 factor combined with the geological characteristic,8 anomaly area with good Au metallogenic prospecting were determined,base on the characteristic of F2,F3,F5 factors,which are useful in indicating the metallogenic hydrothermal activity,12 regional fault with NE,N-NE attitude were deduced.All the information extracted are useful geochemical evidence to the following gold exploration and the work deployment.关键词
非洲/厄立特里亚/金矿/地球化学/异常提取/断裂构造Key words
Africa/Eritrea/gold/geochemical/anomaly extract/fault structure分类
天文与地球科学引用本文复制引用
向文帅,郑雄伟,吴颖,赵凯,曾国平,姜军胜,张紫程,白洋,张元培,罗军强..厄立特里亚GASH金矿集区地球化学特征及信息提取[J].西北地质,2024,57(2):184-196,13.基金项目
中国地质调查局项目"厄立特里亚-埃塞俄比亚钾盐铜金资源调查"(DD20230575),"北部非洲大型铜金资源基地评价"(DD20190443),湖北省自然科学基金项目"努比亚地盾前寒武纪斑岩Cu-Au矿床相关的埃达克质岩成因:对泛非增生造山作用和区域成矿的指示"(2022CFB850)联合资助. （DD20230575）
