The strata of Mesozoic and Cenozoic in the basin can be divided into three parts, Middle Jurassic (Longjiagou Formation ), Lower Cretaceous and Upper Miocene (Baode Formation ).

根据化石组合，龙家沟盆地的地层可划分为中侏罗统龙家沟组，上白垩统及上中新统保德组。

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Good sealing conditions both upper and lateral with a shale content of more than 60% in upper Zhujiang group in Lower Miocene.

下中新统上珠江组盖层泥岩含量不少于60％，圈闭有好的上封侧堵条件。

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