--> ABSTRACT: Facies Analysis, Paleoenvironmental Interpretation, and Diagenetic History of Britt Sandstone (Upper Mississippian), Southeastern Anadarko Basin, Oklahoma, by John P. Haiduk; #91038 (2010)

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Facies Analysis, Paleoenvironmental Interpretation, and Diagenetic History of Britt Sandstone (Upper Mississippian), Southeastern Anadarko Basin, Oklahoma

John P. Haiduk

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 the 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 sand bars. Storm deposits are dominated by fragmented fossils and quartzitic sands.

Numerous episodes of diagenetic activity have altered extensively the reservoir quality of these sands. Volumetrically, carbonate and silica cementation were the most important processes. Chlorite is the dominant authigenic clay mineral. Porosity is predominantly secondary; dissolution of quartz and quartz overgrowths provided much of the reservoir in these highly productive strata.

AAPG Search and Discovery Article #91038©1987 AAPG Annual Convention, Los Angeles, California, June 7-10, 1987.