华北板块与西伯利亚板块缝合带之地球物理特征  

Geophysical characteristics of the suture zone between North China and Siberian plates

作　　者：苏美霞[1] 赵文涛[1] 张慧聪 孙会玲[1] 李红威[1] 范亚丽[1] 

机构地区：[1]内蒙古自治区地质调查院,内蒙古呼和浩特010020 [2]内蒙古第二地质矿产勘查院,内蒙古巴彦淖尔市015000

出　　处：《物探与化探》2014年第5期949-955,共7页Geophysical and Geochemical Exploration

基　　金：中国地质调查局地质大调查项目--全国矿产资源潜力评价(1212011121003)

摘　　要：内蒙古地域辽阔,全区跨越了西伯利亚、华北、哈萨克斯坦、塔里木四大板块。受多期构造运动影响,地质构造环境极其复杂。历年来关于华北板块、西伯利亚板块缝合带界限的位置,始终是地质工作者讨论的热点。笔者从地球物理学的角度,分析了华北板块与西伯利亚板块缝合带之地球物理场(重磁场)特征,认为西拉木伦河断裂带应是华北板块与西伯利亚板块的终极缝合带。Inner Mongolia has vast territory and, according to the theory of plate tectonics, strides across Siberian, North China, Ka- zakhstan and Tarim plates. Its tectonic environment is extremely complex in that it has experienced multi-period structural movements in geological history. For years, the boundary between North China and Siberian plates has been a discussion hotspot among geologists. Based on an analysis of the geophysical gravity and magnetic field characteristics of the suture zone, the authors hold that Xar Moron River fault zone should be the ultimate suture zone between North China and Siberia plates. The results obtained by the authors provide geophysical evidence for the determination of the ultimate suture zone between the two large plates.

关 键 词：华北板块 西伯利亚板块 地球物理 西拉木伦河断裂带 缝合带 

分 类 号：P631[天文地球—地质矿产勘探]