Cathysia

The regional variety of development degree and horizon shows that the turbid-water with mud is from Cathysia on the east of Zhejiang-Anhui Sea Basin .

其发育程度及其层位的区域变化规律表明，泥质浑水系来自海盆东侧的华夏古陆。

They have been formed after the collision peak ( ca.870 Ma ) between the Yangtze and Cathysia blocks , belonging to the post-collisional granites .

这些花岗岩在构造判别图解中也位于碰撞和后碰撞区，形成于扬子和华夏板块间的碰撞高峰（约870Ma）之后，应属后碰撞花岗岩类。

The data offered here favor that the collision between the Yangtze and Cathysia blocks happened in the late Proterozoic era . Before Later Proterozoic era , in this area more than two times of thermodynamic metamorphism took place .

现有资料支持华夏和扬子两地块在晚元古代碰撞拼合的解释。在晚元古代以前该地区至少发生过两次热动力变质作用。