【摘要】 内蒙古北山地区构造分区和深部结构历来为众多地质学家所关注,本研究从地球物理入手,采用有效的技术方法对区域重磁资料进行了处理分析,根据数据处理后的解释结果,将研究区划分为哈萨克斯坦板块东缘构造区和塔里木板块北缘两大Ⅰ级构造区以及6大Ⅱ级构造小区.推断划分北西向深大断裂构造带5条和北东向断裂构造7条.初步判断、圈定出多处磁性决体,并划分出基性岩体、中酸性岩体的分布若干处.结合重磁、地震和地质资料,对深部构造、莫氏界面和基底起伏进行了分析研究.研究结果深化了区域地质和深部构造认识,对研究区内成矿规律研究和矿产资源勘查具有一定的指示意义.更多还原

【Abstract】 The structural division and deep structure of the Beishan area,Inner-Mongolia are always concerned by many geologists.This research starts with geophysics and then adopts advanced and effective methods to process regional magnetic and gravity data sets.The research area is divided into 2 Ⅰ-order structural areas and 6 Ⅱ-order structure areas in the east edge of the Kazakstan plate and north edge of Tarim plate hased on geophysical data process result.Five NW trending deep fault belts and 7 NE faults are inferred.Many magnetic block-bodies are marked off and the distribution of basic rock bodies and medium-acid rock bodies are marked off.Deep structure ,Moho interface and basement undulation are analyzed in conjunction with magnetic,gravity,seismic and geological data.The research result strengthens understanding for regional geology and deep structure and has important significance for metallogenic rules research and mineral prospecting in the research area.更多还原