内蒙古临河-集宁断裂带中段构造特征及其演化

Tectonic characteristics and evolution of the central segment of the Linhe-Jining fault belt, Inner Mongolia

摘要: 内蒙古临河-集宁断裂带是华北地台北缘的一条重要断裂带,对其中段沙湾子-大老虎店段进行了重点解剖.依据区域地质资料和地球物理场特征,结合构造形迹特征,对该断裂带的构造演化进行研究并探讨了其大地构造意义.该断裂带在航磁、重力及深震剖面上都有明显的反映.对断裂带上韧性剪切带、碎裂岩带、推覆构造、断层、褶皱等构造形迹的研究表明,该断裂带是一条自新太古代至今长期活动的构造活动带,控制着该区地质构造的形成与演化.

Abstract: The Linhe-Jining fault belt is an important fault belt on the northern margin of the North China platform. In this paper the authors mainly analyze the Shawanzi-Dalaohudian segment in its central part. On the basis of the regional geological data and geop