Geochemistry of the source rocks in the Huainan foreland thrust zone

Four successions of the source rocks including the Upper Permian,Middle-Lower Jurassic,Lower Cretaceous and Palaeogene strata are developed in the Huainan foreland thrust zone in which prospective oil and gas resources are hosted.The comparison of abundance,type and thermal evolution of the organic matter from the above-mentioned strata shows that the Upper Permian and Middle-Lower Jurassic strata are the best source rocks,followed by the Palaeogene Anjihaihe Formation.The Lower Cretaceous source rocks are less prospective.