摘要
哈得尔甘南地区位于柴达木盆地西南缘,所处大地构造位置在区域上隶属东昆仑岩浆弧带祁漫塔格造山亚带,具有良好的找矿前景.已发现矿体与区域成矿格局和物化探异常不甚相符,经对该区物性资料的分析,结合区域成矿规律,提出了在该区寻找矽卡岩型铁多金属矿的找矿标志和物探工作方法.通过高精度扫面圈定磁异常,在磁异常处布设激电中梯剖面进一步确定异常源,结合磁电异常特征,能够快速圈定铁及多金属矿体在地表的投影位置.对利用物探方法预测的成矿靶区进行深部验证,发现多个矿体,为该区今后的找矿工作提供经验.
The Hadeer Gannan area is located in the southwestern margin of the Qaidam Basin,and the tectonic location is located in the area of the East Kunlun magma arc belt Qiyantaiya orogenic belt,with good prospecting potential. It has been found that the ore body is not consistent with the regional metallogenic pattern and the geophysical and geochemical anomalies. Based on the analysis of the physical properties of the area and the regional metallogenic regularity,it is proposed to find the prospecting mark of the skarn type iron polymetallic ore And geophysical methods of work. It is possible to quickly delineate the projection position of iron and polymetallic ore bodies on the surface by further determining the anomalous source and combining the magnetic anomaly characteristics with the high-precision sweep circle. Depth verification of the metallogenic targets predicted by geophysical methods and the discovery of multiple ore bodies to provide experience for future prospecting work in the area.
作者
周立国
ZHOU Li-guo(Eighth Institate Geology and Mineral Exploration of Shandong Provincial, Rizhao 276826, Chin)
出处
《地球物理学进展》
CSCD
北大核心
2017年第5期2176-2181,共6页
Progress in Geophysics
关键词
矽卡岩
激电中梯
高精度磁测
skarn
IP- intermediate gradient
high precision magnetic survey
