Facies relationships and depositional environments of lower Tuscaloosa formation reservoir sandstones in McComb field area, southwest Mississippi

Conference · Thu May 01 04:00:00 EDT 1986 · Am. Assoc. Pet. Geol., Bull.; (United States)

OSTI ID:5162669

Hamilton, Jr, W S; Cameron, C P

Productive sandstones of the Little Creek field (Denkman Sand) were deposited by a well-developed, mature stream that meandered with moderate to high sinuosity on a low-gradient flood plain. The thickness and continuity of full point bars identified in the core indicate that the sandstones were deposited by a stream approximately the size of the modern lower Brazos River in Texas. The McComb sand was deposited as part of a transgressive barrier island complex at a time when sand supply to the area was diminishing. Coarsening-upward sequences highlighted by large-scale, low-angle, planar cross-bedding were identified in 10 of 14 McComb cores, and probably represent shoreface and barrier facies. The remaining cores exhibit generally thinner fining-upward sequences typical of tidal channel and inlet sequences. The McComb sand is surrounded by lagoonal and marine mudstones and siltstones. The meander-belt deposits occupy a lower stratigraphic position in the formation than the barrier island sandstones. The barrier facies mark the shore zone of the Upper Cretaceous marine transgression in the McComb field area.

• Research Organization: Univ. of Southern Mississippi, Hattiesburg
• OSTI ID: 5162669
• Report Number(s): CONF-860624-
• Conference Information: Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Journal Volume: 70:5
• Country of Publication: United States
• Language: English

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