Facies analysis, paleoenvironmental interpretation, and diagenetic history of Britt sandstone (Upper Mississippian), southeastern Anadarko basin, Oklahoma
The Britt sandstones record a regressive-transgressive couplet in response to deltaic progradation, abandonment, and subsidence in the southeastern Anadarko basin, during the Late Mississippian. Four principal facies compose the sequence: (1) deltaic bar-finger sands, (2) shelf sand ridges, (3) delta-destructional sand bars, and (4) storm deposits. Platform sands were reworked into shelf sand ridges in mid-shelf, with elongated delta-destructional bars forming along the subsiding delta front. Storm surges mixed coarse-grained coquinoid sands with muds and silts typical of lower energy environments. Scouring of storm deposits into underlying sediments was common. Petrologically mature, with the exception of storm deposits, each facies is quartzitic, with trace amounts of potassic and plagioclase feldspar, rock fragments, and heavy minerals. Glauconite is restricted to delta-destructional bars. Storm deposits are dominated by fragmented fossils and sparse oolitic units. Numerous episodes of diagenetic activity have altered extensively the reservoir quality of these sands. Volumetrically, silica and carbonate cementation were the most important diagenetic processes. Chlorite is the dominant authigenic clay mineral. Porosity is predominantly secondary, and the dissolution of quartz and quartz overgrowths provided much of the reservoir in these highly productive strata.
- Research Organization:
- Henry Gungoll Operating, Inc., Enid, OK
- OSTI ID:
- 5863735
- Report Number(s):
- CONF-870916-
- Journal Information:
- AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States), Vol. 71:8; Conference: American Association of Petroleum Geologists Mid-Continent Section meeting, Tulsa, OK, USA, 27 Sep 1987
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
OKLAHOMA
PETROLEUM DEPOSITS
RESERVOIR ROCK
DEPOSITION
DIAGENESIS
ALLUVIAL DEPOSITS
MISSISSIPPIAN PERIOD
SANDSTONES
SEDIMENTARY BASINS
FEDERAL REGION VI
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC STRUCTURES
MINERAL RESOURCES
NORTH AMERICA
PALEOZOIC ERA
RESOURCES
ROCKS
SEDIMENTARY ROCKS
USA
020200* - Petroleum- Reserves
Geology
& Exploration