RE:RE:RE:OIL_RUNSee attached index of upper cretacous aged sediments - or, layers of sediments comprising cretacous aged deposits. https://www.geolsoc.org.uk/Groups-and-Networks/Commissions/Stratigraphy-Commission/Brief-Summary-of-British-Stratigraphy/Upper-Cretaceous
Also attached is an index of tertiary aged sentiments https://www.universetoday.com/79271/tertiary-period/
Note, in several of the Exxon/Hess public announcments - they have mentioned the aged of the reservoir they encountered as partin the for each discovery.
Key point here is that some of these play types Exxon has de-risked (from what we have been told by CGX and other participants in the basin) do extend to the shelf. In some cases, these discoveries Exxon has announed (Pluma & Haimara) are part of a channel systems that run through adjacent blocks owned by CGX, Tullow, Repsol, etc.