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The AAPG/Datapages Combined Publications Database

GCAGS Transactions

Abstract


Gulf Coast Association of Geological Societies Transactions
Vol. 29 (1979), Pages 112-120

Upper Cretaceous - Lower Eocene Strata, Hainesville, Keechi, and Oakwood Previous HitSaltNext Hit Domes, East Texas (1)

Edgar H. Guevara, Alice B. Giles (2)

ABSTRACT

Previous HitSaltNext Hit domes in east Texas are possible sites for nuclear waste repositories. Tectonic stability is a critical factor in evaluating suitability as a repository. Subsurface studies were undertaken to determine stratigraphy and structure of strata around the domes, and to ascertain the growth history of the domes as a means to evaluate tectonic stability. This paper presents the stratigraphy and structural relationships of Upper Cretaceous to lower Eocene strata bounding the upper part of the domes. Three main types of domes have been interpreted from well-log data: 1) at Hainesville Previous HitdomeNext Hit, Upper Cretaceous strata exhibit notable thickening in a rim syncline and stratigraphic markers dip toward the Previous HitdomeNext Hit except near the contact with domal material; 2) at Keechi Previous HitdomeNext Hit, strata are uplifted and dip away from the Previous HitdomeNext Hit with strata thinning toward the Previous HitdomeNext Hit; 3) at Oakwood Previous HitdomeNext Hit, strata are approximately horizontal until near the Previous HitdomeNext Hit edge, where they are upturned; minor thickening of strata occurs toward the Previous HitdomeTop. Differences in stratigraphy and structure of Cretaceous-Eocene strata in the vicinity of these domes are attributed to differences in growth history.


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