The Upper Triassic Formation is sub-abysmal basinal facies deposit in the south and north depressions. A black shale layer developed.

上三叠统在南、北坳陷为次深海盆地相沉积，发育一套黑色页岩烃源层；

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The basin in ontology includes location of the basin in a natural sequence, its own system, geological events in the basin, and the basinal types, facies and models.

本体论的盆地包括盆地在自然序次中的位置、盆地自身系统、盆地中的地质事件，还包括盆地的类别、相和模式等。

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Chenliu formation is a new established lithostratigraphic unit standing for the sedimentation type of basinal littoral facies tract of early tertiary in Guangxi.

陈刘组为新建立的岩石地层单位，代表广西早三叠世盆地滨岸相带沉积类型。

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