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The AAPG/Datapages Combined Publications Database

GCAGS Transactions

Abstract


Gulf Coast Association of Geological Societies Transactions
Vol. 28 (1978), Pages 215-227

Reddell Previous HitSaltNext Hit Previous HitDomeNext Hit of Louisiana: Geotemperatures and Halokinetics

Madhurendu Bhushan Kumar (1)

ABSTRACT

The trap of Reddell field, in Evangeline Parish, Louisiana, is a complexly-faulted domal structure, on a deepseated Previous HitsaltNext Hit plug (Previous HitsaltNext Hit top at 12,368 ft or 3,770 m). The 10,000 ft (3,048 m) -- level isotherms reflects the structural configuration of the Previous HitdomeNext Hit. Some of the wells in the area have encountered high temperatures with geopressure. Some of the high-temperature wells are hydro-pressured, and are located on the crestal part of the structure. This is attributed to the functioning of the deep-seated Previous HitsaltNext Hit plug as an efficient thermal conduit.

Of about 70 wells drilled in the area, several have penetrated the Wilcox (lower Eocene). They provide reasonably adequate controls for a study of the interplay between the sedimentation and Previous HitsaltNext Hit movements close to the northern rim of the Gulf Coast Previous HitsaltNext Hit basin. On the basis of electric log correlations, the stratigraphic section of the Eocene through the Miocene was divided into twenty-twe intervals, for which isopachous maps were constructed, which are presented.

The isopachous maps reveal that the centers of uplift shifted with time, while the structural growth of the Previous HitdomeNext Hit progressed in varying degrees. Considering the stratigraphic thinning as an approximate measure of Previous HitsaltNext Hit uplift, the growth rates are estimated at 0.06 mm/yr for the Wilcox (lower Eocene), 0.03 mm/yr for the Claiborne upper Eocene), 0.01 mm/yr for the Jackson-Vicksburg-Frio (upper Eocene-Oligocene) and 0.02 mm/yr for the Miocene. The lateral shifts of depositional thins are interpreted in terms of spines of motion, active at different rates, at different times. The overall patterns of Previous HitsaltNext Hit movements through the time intervals mapped suggest that the Previous HitsaltNext Hit rose first to the south, and finally to the north, toward the end of the Miocene. The northward Previous HitsaltNext Hit movement appears to be related to the emplacement of Pine Prairie, Eola and Cheneyville domes that mark the northernmost edge of the Gulf Coast Previous HitsaltTop basin.


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