|
|
THE APPLICATION OF MAGNETOTELLURIC SOUNDING TO THE INVESTIGATION OF ORE RESOURCES AT DEPTH |
XU Xin-Xue |
Mining Investment Co., Ltd., Tianjin North China Geological Exploration Bureau, Tianjin300170, China |
|
|
Abstract The magnetite resource investigation and drilling verification in Linfen shows that the magnetotelluric sounding method has the advantage of detecting deep highconductivity layer, and hence is effective in prospecting for deep and concealed ore deposits. With a practical example, the authors revealed the relationship between borehole data and low resistance contour lines, and delineated the top and bottom interfaces of the ore body at the depth of 1 400 m as well as the position of the orecontrolling fault. The results show that the inferred depth is consistent with borehole data, with the errors for the top and the bottom being only 3.8% and 0.5%. This is a successful example in the application of the frequencydomain electromagnetic sounding method.
|
Received: 10 February 2010
Published: 10 February 2011
|
|
|
|
|
|
|
|