In this basin, the thickness of Meso-Cenozoic strata is huge, and the main part is J-K strata, Meso-Cenozoic non-marine detrital rocks including volcaniclastic deposition.

• 信阳盆地位于大别山带，盆地内以北西西向的基底断裂规模最大，其次为规模较小的北东向断裂，断裂控制了盆地的边界。