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The AAPG/Datapages Combined Publications Database

Oklahoma City Geological Society

Abstract


The Shale Shaker Digest IX, Volumes XXVII-XXIX (1976-1979)
Pages 278-304

Subsurface Analysis, "Cherokee" Group (Pennsylvanian), Northern Kingfisher County, Oklahoma

Clifford W. Zeliff

ABSTRACT

The investigated area includes Township 17 North, Ranges 7-9 West and Townships 18-19 North, Ranges 5-9 West in central Oklahoma. The purpose of the study was to focus on (1) occurrence and distribution of Pennsylvanian "Cherokee" sands in the area; (2) possible relationships between the pre-Pennsylvanian erosional surface and sand distribution; (3) depositional history and environments of the units deposited during the interval investigated; and (4) significance of trapping mechanism, both structural and stratigraphic, for commercial accumulations of hydrocarbons in these sands.

The "Cherokee" Group includes strata between the base of the Fort Scott Limestone and the base of the Desmoinesian.

The "Cherokee" Group in the study area is represented by thin shelf limestone marker beds separated by zones of shales and lenticular sands. They are, in descending order, Breezy Hill Limestone, Prue zone, Verdigris Limestone, Skinner zone, Pink lime, Red Fork zone, Inola Limestone, and Bartlesville zone. Within the study area only the Red Ford and Skinner zones contain significant sandstone development.

Lower and upper Red Fork and upper Skinner sands are interpreted as channel deposits. The sand bodies thicken downward at the expense of underlying shale and many are developed in linear trends perpendicular to basin strike.

Positions of channels within the Red Fork zone correspond in general with the positions of drainage channels developed on Chesterian strata beneath the pre-Pennsylvanian erosional surface. Skinner channels appear to be closely aligned with tectonic features related to movements of the Nemaha Ridge.

Gas and some oil production from Red Fork and Skinner sands is controlled by structural and stratigraphic traps. Productive "Cherokee" reservoirs are present throughout the thesis area and all are considered part of the Sooner Trend.


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