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。
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。
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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