A review of petroleum source rocks in parts of the Middle East

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Abstract
Summary: The oils in the Mesozoic and Tertiary reservoirs of the region surrounding the inner Persian/Arabian Gulf were derived from Jurassic and Cretaceous argillaceous and carbonate source rocks, which accumulated at various times in more or less restricted intrashelf basins and depressions, and were preserved under anoxic conditions. Maturation, migration and accumulation took place from the late Cretaceous onwards, at different times in different parts of the region; however, Upper Cretaceous and Tertiary sediments are, for the most part, still immature. This sourcing history is one of a number of favourable circumstances contributing to the richness of the region.