“白垩统”的英语？

下白垩统的扎赉诺尔群的沉积相的主要类型为三角洲相, 湖相和浊流相.The facies types of the Lower Cretaceous are mainly delta, lake and turbidity.酒泉盆地普遍发育了始新统与下白垩统之间的不整合.The unconformity between the Eocene and the Lower Cretaceous is common in Jiuquan bas...