可控源音频大地电磁法在矿体定位预测中的应用--以山东省乳山市蓬家夼金矿床为例

可控源音频大地电磁法（ＣＳＡＭＴ法）是一种直接探测地下岩性及矿产的电磁测深新技术，在山东省乳山市蓬家夼金矿床的应用研究表明，ＣＳＡＭＴ法可以成功地用于确定矿体的形态，产状和埋藏深度，为矿床地球物理找矿模型的建立提供了科学的依据，是了解矿化规律和进行隐状矿体预测的有效手段。

APPLICATION RESEARCH OF CONTROLLED SOURCE ACOUSTIC MAGNETOTELLURIC IN THE LOCATION FORECASTING OF BURIED OREBODIES

Controlled source acoustic magnetotelluric(CSAMT)is a new technique in electrical surveys,used in ore deposits exploration.The present paper describes the basic principles of CSAMT,taking Pengjiakuang gold deposit as an example.Some apparent resistivity anomaly features,low in the central part and high in the both sides corresponding to the goldbearing structure,were summed up based on the analysis of a large number of data by prospecting the orebodies in Pengjiakuang gold deposit.The location forecasting problem of buried orebodies has been solved according to these features,and the successful rate is very high in well drilling.So,CSAMT can be successfully applied to determine the location,the shape,the occurrence and the depth of buried orebodies and reveal the changing laws of metallization and can work as a guideline for the buried ore exploration.