秦昆结合部塔秀—曲什安地区水系沉积物测量地球化学特征及找矿方向

Geochemical characteristics of stream sediments and ore-prospecting orientation in Taxiu-Qushi'an area at the junction of Qinling and Kunlun

通过开展塔秀等4图幅1∶5万水系沉积物测量工作,在塔秀—曲什安地区获得了较丰富的区域地球化学测量成果。利用数理统计和浓幅分位对17种元素进行了数理分析,通过簇群分析和因子分析讨论了各元素在空间上的分布特征和组合关系。根据异常分布和元素成矿特征优选出了4处成矿远景区,其中玛日当沟—阿尔干龙洼成矿远景区为寻找W、Au矿的有利地区,牧羊沟—托头岗成矿远景区为寻找Au矿的有利部位。

The study of the geochemical characteristics of Taxiu-Qushi-an area was based on the 1∶50 000 stream sediment survey. The authors obtained plentiful regional geochemical survey data. Through mathematical statistics and concentration distribution, the authors carried out mathematical analysis of 17 elements and also discussed spatial distribution and composition relationship of elements by cluster and factor analysis. According to abnormal distribution and elements mineralization characteristics, the authors chose 4 minerali-zation prospective areas through optimization and, on such a basis, suggested that the Maridang-Aerganlongwa prospective area is the favorable area in search for W and Au, and the Muyanggou-Tuotougang prospective area is the favorable area in search for Au.