Results There is thrust, imbricate structure and tectonic wedge from north-west to south-east in the south of the center geotectogence.

• 结果中央拗陷带南缘自北西向南东依次发育对冲、叠瓦和构造楔,其中的石板墩与黑墩构造带中二叠统烃源岩叠置,构造裂缝十分发育,油气成藏条件较为优越。