“曲化平”方法在吉林×××矿区的应用和效果

一、前言 M_4低缓异常(图1),是吉林冶金地质公司608队在1981年做地面磁法普查时发现的。该异常位于吉林省南部×××铁矿西南四公里处,处于老岭背斜南东翼隆起部位。异常区内地层主要是震旦系大罗圈河组,不整合覆盖于老岭群大栗子组之上,厚度约300—500米。×××组地层呈一些小天窗零星出露于沟谷之中。测区的西南角和东北角有少量的中生界侏罗系一白垩系地层分布,不整合(构造不整合)于大罗圈河组地层之上。×××铁矿位于该区的东北部。××××铁矿赋存于大栗子组含铁层中,矿体上盘为千

AN INTRODUCTION ABOUT THE APPLICATION AND RESULT FOR THE METHOD OF "REDUCING FROM AN ARBITRARY SURFACE INTO PLANE" AT A CERTAIN MINING DISTRICT, JILIN

In this paper the auther describes the application and result of "reducing from an arbitrary surface into a plane" method It is very beneficial to proper understanding of the characteristics of geophysical field and to making a correct interpretation for them, transforming the measured field at a relief topography into the field at a plane, as the topography of this district is very rugged.In particular, for the calculation of "reducing from a arbitrary surface into a plane"in the half space below the ground surface, the resolution of combined field will give us a new idea about the anomalies, the distribution of the orebodies and the structural features of a deposit.The case history presented here has shown that the reducing process method is very necessary under the conditions of complex relief.