华北北缘白云鄂博地区陆壳增生带断裂构造特征

The characteristics of faults for the continental crust growth in Bayan Obo area in the northern margin of North China

为了深入了解白云鄂博地区陆壳增生带断裂构造的特征和形成时代,对研究区区域断裂进行地质测量和研究。研究表明,研究区内断裂构造受多期构造运动的影响,逆断层较发育。逆断层强烈变形,卷入了结晶基底地层,主要形成于晚古生代;正断层控制了晚中生代沉积地层的发育,主要形成于中生代。

To understanding the characteristic and age for the faults of continental crust growth belt in Bayan Obo area, regional faults has been surveyed in the study area. Studies have shown that the faults in the study area had effected by several tectonic movements. Reverse faults normally developed with strong deformation. The character shows involvement of the crystalline basement rocks, formed in late Paleozoic. Which the normal faults controled the development of late Mesozoic sedimentary rocks and formed in the Mesozoic.