Qingshankou-Yaojia Formation的意思|示意

On the basis of the larger regional unconformity, Changling depression can be divided into 2 second-order sequences of Quantou Formation-Qingshankou Formation and Yaojia Formation-Nenjiang Formation.

根据较大的区域不整合，长岭凹陷可以划分为泉头组-青山口组和姚家组-嫩江组两个二级层序。

Pu-1 oil layer, one of most important productivity layers, composed with lower part of Cretaceous Yaojia Formation and upper part of Qingshankou Formation, is river and delta sedimentary.

葡一油层是大庆油田的主要产层之一，由白垩纪姚家组底部和青山口组顶部地层组成，为河流-三角洲相沉积。