南祁连敖果吞乌兰山地区地球物理、地球化学特征及找矿潜力  

Geophysical and geochemical characteristics and prospecting potentials in Aoguotunwulanshan Area,South Qilan

作　　者：白洪溪 周瑾 李华 李兄 吉明甲 Bai Hongxi;Zhou Jin;Li Hua;Li Xiong;Ji Mingjia(Qinghai Geological Survey)

机构地区：[1]青海省地质调查局

出　　处：《黄金》2019年第10期14-19,共6页Gold

基　　金：青海省地质勘查基金项目(2013225017jc011)

摘　　要：敖果吞乌兰山地区位于南祁连铅、锌、金、铜、镍、铬成矿带,成矿条件优越。对研究区地球物理特征进行了研究,结果显示:不同岩性磁性、电性差异大,具有使用磁法或电法开展工作的前提;航磁异常与地磁异常形态基本一致,磁异常表现为西强东弱、南强北弱的特征,并圈定地磁异常16处。地球化学特征研究结果显示:研究区位于1∶20万水系沉积物综合异常AS20丙BeWAu内,为寻找金、钨的重要区域;圈定土壤综合异常10处,其中4处土壤综合异常(AP3、AP7、AP9、AP10)具有较好的找矿潜力。根据研究区地质、地球物理及地球化学特征,圈定找矿潜力区9处,优选找矿靶区4处。通过对找矿靶区A4的验证,认为研究区内具有进一步探获厚大、高品位金矿体的潜力。Aoguotunwulanshan Area is located in South Qilan lead,zinc,gold,copper,nickel and chromium metallogenic belt with favorable ore-forming conditions. Geophysical characteristics study in the area shows that magnetism and electric property vary greatly between different kinds of lithology,making magnetic or electric methods available for carrying out work;aeromagnetic and geomagnetic anomalies take basically the same form,which is strong in the west and weak in the east,and strong in the south and weak in the north. 16 geomagnetic anomalies were delineated.Geochemical characteristics study shows that the study area is located in the 1 ∶ 200 000 stream sediment comprehensive anomaly AS丙20 BeWAu,which is an important area for gold and tungsten prospecting;10 comprehensive soil anomalies were delineated and 4 of them( AP3,AP7,AP9,AP10) bear good prospecting potentials. According to the geological,geophysical and geochemical characteristics,9 prospecting potential areas were delineated and 4 prospecting target areas were selected. Through the verification of A4 prospecting target area,the study area is considered to have the potential to further explore for thicker and high-grade ore bodies.

关 键 词：地球物理特征 地球化学特征 找矿潜力 找矿靶区 敖果吞乌兰山地区 南祁连 

分 类 号：TD15[矿业工程—矿山地质测量] P631.2[天文地球—地质矿产勘探]