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 highprecision aeromagnetic data of LuopingWenshan 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.
出处
《物探与化探》
CAS
CSCD
2003年第1期18-22,共5页
Geophysical and Geochemical Exploration
关键词
航磁资料
隐伏岩体
地质
重力
地球化学勘探
high-precision aeromagnetic survey
delineation of concealed rock body
prospecting for ore resources
