论文部分内容阅读
浙江桐庐栖霞组可划分为二个带:上部为Cancelli naneoschwagerinoides-Verbeekina grabaui带,归属祥播阶;下部为Misellinaclaudiae带,归属罗甸阶。栖霞组被划分出3个正层序和6个四级层序。高频旋回层研究表明:栖霞组主要的成岩环境有台地相、浅海陆棚相和盆地相三种类型,从下至上总体反映为台地向盆地的演化环境。
Zhejiang Qilu Qixia group can be divided into two belt: the upper is Cancelli naneoschwagerinoides-Verbeekina grabaui belt, belongs to auspicious broadcast order; the lower part of the Misellinaclaudiae belt, belongs to Luodian order. Qixia Formation is divided into three positive and six fourth-order sequences. The study of high-frequency spiral layers shows that the main diagenetic environments of Qixia Formation are platform facies, shallow sea shelf facies and basin facies, which are generally reflected from bottom to top as the evolutionary environment of platform to basin.