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The AAPG/Datapages Combined Publications Database

Houston Geological Society Bulletin


Houston Geological Society Bulletin, Volume 33, No. 2, October 1990. Pages 11-11.

Abstract: Eustatic and Previous HitSaltNext Hit-Tectonic Controls on Sequence Development, Northern East Texas Basin


Kenneth D. Ehman and James M. Demarest

Detailed log and seismic interpretation of the Woodbine/Eagle Ford interval in the vicinity of the Hainesville Previous HitDomeNext Hit of east Texas resulted in the recognition of Previous HitsaltNext Hit-tectonic and eustatic controls on depositional patterns. Major cycles of transgression and regression within this interval correspond to eustatic cycles recognized worldwide. The Late Cenomanian lowstand resulted in the deposition of fluvial Woodbine sandstones above the marine Maness Shale (93 Ma). Transgressive and highstand marine shales of the Eagle Ford rest above the fluvial Woodbine sands. A Late Turonian sequence boundary (90 Ma) separates the highstand shales of the Eagle Ford from the lowstand and transgressive marine sands and shales of the Sub-Clarksville. The section is capped by the transgressive Austin Chalk. Between the Woodbine (92 Ma) and the Sub-Clarksville (90 Ma), the Hainesville Previous HitSaltNext Hit Previous HitDomeNext Hit evolved from a nonpiercement to a piercement Previous HitsaltNext Hit Previous HitdomeNext Hit. This evolution of the Hainesville Previous HitdomeNext Hit caused the area adjacent to the present-day Previous HitdomeNext Hit to change from a structural high to a rapidly subsiding basin adjacent to the Previous HitdomeNext Hit. With the rapid loss of Previous HitsaltNext Hit into the piercement Previous HitdomeNext Hit around 92 Ma, conditions adjacent to the Previous HitdomeNext Hit changed from subaerial onlapping of the Woodbine fluvial facies to distal downlapping of the Eagle Ford marine shales into the center of the Hainesville withdrawal syncline. Thus, the detailed timing of Previous HitsaltNext Hit movement is recorded in the thickness and facies distribution around the Previous HitsaltNext Hit Previous HitdomeTop within the context of major global eustatic cycles.

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