【摘要】 本文在分析西北主要构造体系特征的基础上,研究了西北构造体系的成生历史、型相演变、复合关系及其发展趋势。进而探讨了活动构造体系特征。最后提出了几点认识。其目的是为地震活动规律的研究,提供区域性地壳运动的地质背景。更多还原

【Abstract】 Based on the analysis of characteristics of major structural systems in the Northwestern region of China, the author has studies the formative process, the phase of type evolution, the compound relationship, and the trend of development of them The characteristies of active structural sysrems are further studied. Finally, several view poins are put forward. The purpose of this paper for offering geological background of regional crustal motion for study of the laws of seismic activities.更多还原