摘要
扬子地块和华夏地块原是统一的陆块,它形成于17～18亿年的构造-热事件。华南裂陷系是由于陆块分裂而出现的。裂陷系内部展布了一系列S形区域断裂,它对沉积建造、火山活动和构造变形都有控制作用。裂陷系经历了中、晚元古代的扩张阶段,早古生代的萎缩阶段和志留纪末的封闭阶段,构造演化的动力学过程与华夏地块相对于扬子地块从逆钟向转为顺钟向转动,以及沿北东东向的左行剪切变为右行剪切有关。
The crystalline rock series of Early Precambrian are located at the Yangzi and Cathaysian massifs. It can be inferred that two massifs were joined together in the late stage of Early precambrian according to the identity of the formation time of massifs,the similarity of the rock association and the interrelation of massifs tectonics. The South China taphrogenic system came out in the Late Precambrian when the integrate landmass was split. There are a series of reginal S-type faults in the taphrogenic system which controlled the tectonic deformation, sedimentary formation and volcanism. The South China taphrogenic system underwent extending stage in the Middle-Late Proterozoic and contracting stage in Early Paleozoic. At last,it closed in Guangxian movement at the end of Silurian. The dynamic process is related to the clockwise rotation of the Cathaysian massif and right-lateral wrench movement between two massifs.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1989年第1期29-36,共8页
Earth Science-Journal of China University of Geosciences
关键词
裂陷系
建造
构造演化
Yangzi massif,Cathaysian massif, South China taphrogenic system, rifting,micromass, prototerrance, Jinningian movement, Guangxian movement
