--> ABSTRACT: Integrated Sequence Stratigraphic Study of the Upper Cretaceous Deposits, Northwestern Gulf of Mexico Basin, Using Seismic (2D and 3D), Well and Outcrop Data; with Emphasis on Deep Water Deposits, by SALAH El-DIN RAGAB Mahmoud; #90906(2001)

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SALAH El-DIN RAGAB Mahmoud1

(1) The University of Texas at Dallas, Richardson, TX

ABSTRACT: Integrated Sequence Stratigraphic Study of the Upper Cretaceous Deposits, Northwestern Gulf of Mexico Basin, Using Seismic (2D and 3D), Well and Outcrop Data; with Emphasis on Deep Water Deposits

The purpose of this project is to try to solve ambiguities regarding age-dating, vertical and lateral extent of rock units belonging to the Upper Cretaceous Navarro Group in the Rio Grande Embayment, northwestern Gulf of Mexico Basin. There are many misconceptions regarding age assignments and lateral relationships between these units. In order to achieve the research goals, modern concepts of sequence stratigraphy are applied using seismic stratigraphy, well log, core and outcrop - sedimentology, combined with palynostratigraphy for high-resolution correlation of time and facies. Slope fan and basin floor fan deposits formed behind the Lower Cretaceous shelf break with large-scale clinoform patterns were interpreted from seismic data. Smaller - scale features within these deep-water settings are thought to form possible hydrocarbon plays. The resulting high - resolution chronostratigraphic framework is expected to leads to achieving the above research goals with high accuracy. Moreover, the present study is an attempt to determine the effects of eustasy on sediment distribution. This comprises finding out if the relative sea level changes are totally due to eustatic changes of sea level or due to the combined effects of tectonism, changes in the rate of sediment supply and eustatic sea level changes. This methodology is thought to allow looking at the study area in a more fresh way. Subsequently, new plays, not outlined by the old methods will be discovered, and present plays will be re-discovered. This is because of better understanding the chronostratigraphic relationships between them within the interpreted regional chronostratigraphic framework in the study

AAPG Search and Discovery Article #90906©2001 AAPG Annual Convention, Denver, Colorado