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Checkerboard Formation

Geologic Formation in OK, KS

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Lithology

Limestone

Shale

Sandstone

Other (1,451 mi²)

Geologic Age

Pennsylvanian (323.6 Ma – 299.05 Ma ago)

Geologic Unit Label

PAcc

ENID- “Coffeyville Formation” is mainly shale interbedded with fine-to medium-grained sandstone. Locally formation contains thin coal seams. Thickness ranges from 175 to 470 feet (50 to 140 m). Underlying “Checkerboard Limestone” is crystalline limestone 2 to 15 feet (1 to 5 m) thick. TULSA- “Coffeyville Formation,” shale and thin-bedded sandstone. “Checkerboard Formation,” limestone and some shale. OKLAHOMA CITY- “Coffeyville Formation,” mainly shale interbedded with fine- to medium-grained sandstone locally containing chert and limestone conglomerate and thin coal seams; thickness, 150 to 470 feet. Underlying “Checkerboard Limestone,” crystalline limestone 2.5 to 5 feet thick.

— USGS

Taxonomy

Classified As

Geologic Formation