地台基底(basement of platform) 地台具有双层结构:上层为地台盖层,下层为地台基底,其间被区域性的角度不整合隔开,代表明显不同的两个构造演化阶段。
双语例句
1
A craton includes a crystalline basementof commonly Precambrian rock called a shield, and a platform in which flat-lying or nearly flat-lying sediments or sedimentary rock surround the shield.
The unevenness of crystalline basement is found to be the governing factor for forming the NNE-striking blind basement strike-slip zone and the strike-slip tectonics in the Cenozoic platform cover.