Petrology and depositional environments of lower Tuscaloosa Formation (upper Cretaceous) sandstones in North Hustler and Thompson field areas, southwestern Mississippi
The lithology, diagenesis, and depositional environments of the Dykes, Denkman, and McComb units of the Stringer Sand Member of the lower Tuscaloosa Formation in the North Hustler and Thompson field areas of Amite County, Mississippi, have been determined by detailed description of cores from nine wells and examination of 61 thin sections. The cores were recovered from driller depths of about 11,100 ft (3383 m) in the updip Tuscaloosa trend, which is being actively explored for stratigraphically trapped oil. Most of the sandstone samples (65%) are quartzarenites, and the remainder are sublitharenites. Porosity is mostly secondary, resulting from partial dissolution of framework grains and cement. The depositional environment of the Dykes and Denkman sandstones in all wells is interpreted to be fluvial, with stacked point bars obvious in one well. The McComb sandstone, best developed in a wildcat well between Thompson and McComb fields, is marine, based on the occurrence of glauconite and shell fragments. The presence of a basal scour surface on shale indicates that this sandstone may be the product of marine reworking of a transgressed fluvial (distributary point or mouth bar.)sand.
- Research Organization:
- Univ. of Southern Mississippi, Hattiesburg (USA)
- OSTI ID:
- 6025414
- Report Number(s):
- CONF-8810362-
- Journal Information:
- AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States), Vol. 72:9; Conference: Gulf Coast Association of the Geological Society and Gulf Coast Section of SEPM meeting, New Orleans, LA, USA, 19 Oct 1988
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
MISSISSIPPI
PETROLEUM DEPOSITS
RESERVOIR ROCK
DEPOSITION
CRETACEOUS PERIOD
DIAGENESIS
GEOLOGIC TRAPS
LITHOLOGY
SANDSTONES
SHALES
FEDERAL REGION IV
GEOLOGIC AGES
GEOLOGIC DEPOSITS
MESOZOIC ERA
MINERAL RESOURCES
NORTH AMERICA
RESOURCES
ROCKS
SEDIMENTARY ROCKS
USA
020200* - Petroleum- Reserves
Geology
& Exploration