高精度航磁资料圈定隐伏岩体的效果  

THE EFFECTS OF APPLYING HIGH-PRECISION AEROMAGNETIC DATA TO THE DELINEATION OF CONCEALED INTRUSIVE BODIES

作　　者：郑广如[1] 乔春贵[1] 刘英会[1] 

机构地区：[1]中国国土资源航空物探遥感中心,北京100083

出　　处：《物探与化探》2003年第1期18-22,共5页Geophysical and Geochemical Exploration

摘　　要：通过新完成的云南省罗平—文山地区1:10万高精度航磁资料,对比已知中酸性岩体的圆环状磁场特征,发现有多处磁异常与已知中酸性岩体磁异常相似,结合物性及地质、重力、化探等资料认为,这些圆环状磁异常主要是隐伏中酸性侵入岩的反映。中酸性侵入岩与银、铜、铅、锌多金属矿产关系密切,这类磁异常区是间接寻找上述矿产的有利地带。According to the newly-obtained 1∶100 000 highprecision aeromagnetic data of LuopingWenshan area in Yunnan Province, this paper made a comparative study on characteristics of ringed magnetic fields caused by known intermediate and acid intrusive bodies and, on such a basis, found that some magnetic anomalies are quite similar to known intermediate and acid intrusive bodies in shape. Combined with physical characters and geological, gravity and geochemical data, it is held that these ringed magnetic anomalies mainly reflect concealed intermediate and acid intrusive bodies. As is well known, intermediate and acid intrusive bodies are closely related to silver, copper, lead and zinc polymetallic ore resources. Therefore, such magnetic anomalies seem to be favorable places in search for these resources.

关 键 词：航磁资料 隐伏岩体 地质 重力 地球化学勘探 

分 类 号：P631.2[天文地球—地质矿产勘探]