The Cretaceous sedimentation rate is high with good oil generating condition because of the slipping of Muglad basin. Subsiding center transferring from north to south created clean mudstone of Darfur group of KK depression in south part of the basin.

• M盆地的走滑性质使其白垩系沉积速率大 ,生油条件好 ,沉降中心从早至晚自北而南转移 ,决定了南部KK坳陷的达富尔群泥岩纯净 ,封盖性能好 ,石油地质条件优越 ,大油田均发现于KK坳陷。