COMPREHENSIVE GEOPHYSICAL INTERPRETATION FOR THE GEOLOGICAL AND MINERAL SURVEY IN BASALT-COVERED REGION OF CHANGBAI MOUNTAIN: A Case Study of Kaifeng Forest Farm Area

Combined with 7 comprehensive geophysical sections in the basalt-covered area of Changbai Mountains, multiple geophysical exploration methods such as gravity, high-precision magnetic survey, controlled source audio-frequency magnetotellurics (CSAMT) and shallow seismic exploration are used to study the spatial distribution, lithology and structural characteristics of basalt-covered geological bodies. Through geological mapping and validity test of prospecting methods, the results are verified with engineering drilling. Furthermore, the paper draws the inferred map of basement in the basalt covered area and contour map of basalt thickness, and summarizes the effective methods of geological and mineral survey in Cenozoic basalt-covered region.