Sequences, Depositional Systems, and Synsedimentary Tectonics, Oligocene Rocks, Corpus Christi Region, South Texas: Revisiting Mature Fields with New Prospecting Tactics
L. Frank Brown, Jr., Robert G. Loucks, Ramón H. Treviño, 2002. "Sequences, Depositional Systems, and Synsedimentary Tectonics, Oligocene Rocks, Corpus Christi Region, South Texas: Revisiting Mature Fields with New Prospecting Tactics", Sequence Stratigraphic Models for Exploration and Production: Evolving Methodology, Emerging Models and Application Histories, John M. Armentrout, Norman C. Rosen
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Subregional 3-D seismic volumes and wireline logs permitted definition of second- to fifth-order (~10 my–10 ky) Frio and Anahuac (Oligocene) sequences, systems tracts, and associated syntectonics. Third- and most fourth-order sequences were correlated within several subregional wireline-log and seismic networks. Vicksburg and Miocene sequences were of secondary interest. Composite sequence logs (Figs. 1 and 2) characterized principal fields. Sequence analysis identified and correlated all key surfaces: type 1 unconformities, maximum-flooding surfaces, and transgressive surfaces bounding systems tracts. Although microfossil occurrences are not necessarily required for sequence analysis, limited data were integrated with the final sequence frameworks, providing secondary verification of assigned ages.