The lithostratigraphic cross sections, thickness variations, and lithofacies of some Jurassic and Cretaceous rock units are discussed in order to distinguish the shape and the extent of sedimentary basins and the environment of deposition. The geochemical study assisted in the identification of potential source intervals within the studied rock units. The results showed that the Middle Jurassic source rocks are mature and have good to very good organic richness with mixed kerogen type (III/II). The Cretaceous source rocks vary from poor to very good with mixed oil and gas and characterized by immature to marginally mature in the study area.