甘肃北山炭山子—黄草泉一带水系沉积物地球化学特征及找矿远景
Geochemical Characteristics of Stream Sediments and Prospecting Direction in the Tanshanzi-Huangcaoquan Area of Beishan, Gansu Province

摘要： 摘要：依据甘肃北山炭山子—黄草泉一带1∶5万水系沉积物测量成果，分析了区内地球化学参数特征及其元素的相关性，认为元素地球化学异常主要受断裂、地层及岩浆岩3种因素控制，即主要受大山头断裂带和庙庙井断裂带，蓟县系、寒武系和奥陶系地层，大山头、三个井基性-超基性杂岩体及华力西期中酸性侵入岩的控制。根据异常特征及成矿地质条件圈定出4处具较好找矿潜力的远景区，即大山头铜镍找矿远景区、三个井铜镍找矿远景区、庙庙井金铜钨钼多金属矿找矿远景区、黄草泉东金银多金属矿找矿远景区，为该区下一步找矿工作指明了方向。
Abstract: Abstract:Based on the 1∶50,000 stream sediment survey in Tanshanzi-Huangcaoquan area of Gansu Province, the geochemical parameters of oreforming elements were calculated, and the distribution, correlation, and anomaly assemblages of these elements were analyzed accordingly. It is indicated that the main elemental geochemical anomalies are controlled by faults (Dashantou and Miaomiaojing fracture zone), stratigraphy (Jixian system, Cambrian system, and Ordovician system), and magmatite (Dashantou and Sangejing maficultramafic magma and Variscan granite). According to the characteristics of structures, lithologies, and geochemical anomalies in this area, the authors delineated four polymetallogenic prospective areas, namely Dashantou and Sangejing CuNi metallogenetic prospective areas, Miaomiaojing AuCuWMo polymetallogenic prospective area, Huangcaoquandong AuAg polymetallogenic prospective area. This work is expected to provide some insights for the future exploration