埃塞俄比亚北部阿斯格德地区地球化学异常特征与找矿意义

阿斯格德地区位于埃塞俄比亚北部提格雷州施瑞县境内,地球化学景观属半干旱中低山区,一、二级水系发育,以V型河谷为主,剥蚀区地形平缓,覆盖有残坡积物,适宜进行水系沉积物测量和沟系土壤地球化学测量。通过地球化学普查工作,在该区圈定水系沉积物组合异常27处,圈定沟系土壤组合异常19处。对4处组合异常开展了异常查证,发现铁帽型金矿点1处,构造蚀变岩型金矿点1处,铁帽型金矿化点2处,圈定找矿靶区4处,取得了较好的找矿效果,为后续矿产勘查工作及探索和建立境外矿产资源快速评价方法体系提供了依据。

Geochemical anomalous characteristics and prospecting significance in Asgede area, northern Ethiopia

Asgede area is located in Shire area, northern Ethiopia, where it is a semi-arid and low altitude mountain from geochemical landscape view, I and II level drainage were well developed, and river valley is dominated by V shape, and the terrain is flat in erosion area and covered with eluvial material suitable for stream sediments measurement and valley-soil geochemical survey. Through geochemical prospecting work, 27 combined anomalies of stream sediment, 19 combined anomalies of valley-soil were outlined. The filed verification for 4 composite anomalies was carried out, and one gossameous gold-bearing mineralized zone and one structural controlled gold mineralized zone were found, and 4 prospecting areas were delineated. All of geochemical and mineralization information strongly help to establish a suit of effective exploration method and evaluation system for overseas mineral resources evaluation.