摘要:
在地表覆盖严重的地区开展地质工作,勘探方法的选择非常重要,高精度磁法是寻找磁性矿物的首选物探方法,目前在祁漫塔格地区的地质找矿工作中起到了非常重要的作用。那陵郭勒河西地区分布有大面积砂梁,高数米至十余米。依钻孔数据,厚度为160～314m,所有形迹都被沙漠覆盖,地面磁异常宽缓不明显。由于缺乏本区地质资料,这给磁测资料的解释带来困难,使得不能给验证钻孔准确定位,这时异常解释手段的选择显得非常重要。通过实例说明综合采用磁法地-井资料的精细反演技术,在沙漠覆盖区实现找矿重大突破。
Abstract:
It is very important that choosing the methods of exploration when we carry out geological work in areas whose surface is covered seriously.High-precision magnetic method is the preferred method of geophysical techniques for finding magnetic mineral,and this method played a very important role in geological prospecting work in Qimantage area.There are a large area of sand beams in the west of Nalingguole river,which are a few meters to ten meters in height.According to the data of bore hole,the overburden thickness is 160-314m.Trail are all covered by desert,and the ground magnetic anomaly is wide-gentle and unobvious.Lack of local geological data led to the interpretation of magnetic survey data is very difficult,and can not provide the exact location to verify bore hole.So the progress of magnetic anomaly interpretation plays a key role.This paper will illustrate examples of using the technology of joint inversion of surface and borehole magnetic data,in order to get more breakthrough in the desert coverage prospecting.
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