摘要
利用航空电磁法进行岩性构造填图,可以弥补航空磁法对无磁性地层较难划分的问题,并对今后有效利用航空物探进行地质填图具有一定的指导意义。以2004年内蒙乌达地区1:5000大比例尺的直升机航空电磁数据为基础资料,分析和研究了航空电磁场特征与地层岩性和断裂构造的关系,并以此为基础建立了该区地层岩性和断裂构造的划分标志,对该区的地层岩性和断裂构造进行了划分,通过与以往内蒙乌达地区地质图进行对比,发现二者吻合较好,并增加和细化了若干新的地层单元。
The use of Airborne Electromagnetic Method for Geological Structrue Mapping is the supplement to the formation which can not be divided by airborne magnetic survey. This achievement will serve as some guidelines for geological mapping by using airborne geophysical method for the future. Based on the data of helicopter electromagnetic method with the large-scale of 1.5000 in WUDA District of Inner Mongolia, this paper analyzes and researches the relationship among airborne electromagnetic characteristics, formation lithology and fault structure. In the comprehensive analysis, this paper builds the sign for the division of the formation lithology and fault structure, and divides them. Compared with the geological map in the past of Wuda, Inner Mongolia, most divisions between them coincide well. And this paper increases the number and details of the formation of the new stratigraphic units .
出处
《工程地球物理学报》
2009年第4期411-417,共7页
Chinese Journal of Engineering Geophysics
关键词
航空电磁法
地质构造填图
应用效果
airborme electromagnetic
geological structrue mapping
applied effect
