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Wilcox and Upper Cretaceous Sediments were Established from Campeche, Alaminos Canyon, and South Marsh Island wells, Gulf of Mexico, Using Maximum Flooding Surfaces, Seismic Data, and High-Resolution Biostratigraphy


Maximum flooding surfaces (MFSs) recognized in Wilcox and Upper Cretaceous sediments in Campeche, Mexico, were correlated with wells Chevron 818 #1, Shell 857 #1, Unocal 903 #1, Exxon Mobil 731 #1, and Shell 557 #1)in the Alaminos Canyon protraction area, Gulf of Mexico.

Sediments in these deepwater wells range in age from Lower Cretaceous, Upper Cretaceous, Paleocene, and Eocene to Miocene based on calcareous nannofossils, planktonic foraminifers, and maximum flooding surfaces. The paleobathymetry ranges from lower to upper bathyal.

Up to seven MFSs were recognized in the Cretaceous, two in the Paleocene, six in the Eocene, four in Oligocene, and six in the Miocene. The same MFSs in the deepwater wells were recognized on seismic and well logs in McMoran shelf wells, Davy Jones #1 and #2, and in Miocene-aged sediments in South Marsh Island 230, 234, and 245.

Integration of seismic data, maximum flooding surfaces, marker species data, and well logs will now permit a time-based correlation of Cretaceous to Miocene reservoir sands from Mexico to shallow shelf offshore Texas.