摘要
综合分析南秦岭地质组成与构造特征,显示出区内经历了太古-早、中元古代基底形成阶段,晚元古-早古生代统一扬子大陆北缘演化阶段,古生代勉略-石泉海槽的形成、闭合造山阶段和燕山以来的陆内造山4个大的演化阶段,并形成了相应的岩石建造与构造变形组合。
Comprehensive analysis of the geological composition and structural features in the southern Qinling indicates that this region passed through four evolution phases, i. e. basement formed at the time from Archaen to early and middle Proterozoic era, marginal evolu tion of the Yangtze continent from the late Proterozoic to early Paleozoic periods, formation of sea trough between Mianxian and Shiquan in Paleozoic time and closed orogeny and intracontinental orogeny in the Yanshanian time, forming a corresponding composition between lithological formation and structural deformation.
出处
《陕西地质》
1996年第A01期20-26,共7页
Geology of Shaanxi
关键词
陕西南秦岭
秦岭小板块
蛇绿岩结晶基底
过渡基底
陆内造山
Southern Qinling of Shaanxi
Qinling lesser plate
Ophiolite
Crystalline basement
Transitional basement
Intracontinental orogeny