在北波拿巴盆地北部地区，针对该区域的地质特征重点分析了中生界的层序地层和沉积相特征。在研究过程中，利用层序地层学和沉积学原理，将中生界划分为4 个二级层序和9 个三级层序，并将其分为2 种层序组合序列。中下部层序下降旋回占主体，属海退式沉积组合序列；上部层序上升旋回占主体，多为海进式沉积组合序列。沉积环境从海洋环境过渡到陆相河流环境再逐渐过渡到海陆过渡相三角洲环境和浅海相环境,再到海相沉积，整体上是一个完整的水退至水进的沉积过程。最后，指出北部地区Sahul台地三级层序Ⅳ，Ⅴ和Ⅵ的三角洲、滨岸和东部斜坡带滨岸区为该区域的有利油气勘探区带。

Based on the theory of sequence stratigraphy and sedimentology, the characteristics of sequence stratigraphy and sedimentary facies of Mesozoic in northern Bonaparte Basin are studied. The Mesozoic formation can be divided into four second-order sequences and nine third-order sequences, which is classified into two kinds of sequence combination. The lower and middle sequences are dominated by descending cycle, which belongs to typical regression series, while the upper sequence is dominated by rising cycle, which belongs to transgression series. The sedimentary environment changed frommarine facies to fluvial facies then transitional delta facies, eventually neritic facies, forming a whole set of regression and transgression cycle. Finally, it is pointed out that the shore in the eastern slope and the delta and the shore in the Sahul platform are the favorable exploration belts.