Wapanucka Formation (OKPAwa;0)

State	Oklahoma
Name	Wapanucka Formation
Geologic age	Early Pennsylvanian
Lithologic constituents	Major Sedimentary > Carbonate > Limestone (Bed)
Comments	Probably named for Wapanucka, in Johnston Co, OK. Crops out as narrow band along eastern border of the older Caney shale (new) in southeast and southwest corners of Coalgate quad, Coal Co, OK, Arkoma basin. Is extensive but thin lentil reaches beyond quad borders. Produces ridges, except where beds are overturned, allowing shale on both sides to erode, leaving limestone unprotected. Abrupt ending of unit at south end of Limestone Ridge due to displacement by an extensive fault. Southward at Boggy Depot, Atoka quad, Ouachita tectonic belt province, it emerges, bearing northwest and continuing to southwest corner Coalgate quad. Beds at top are white, massive, often oolitic. Cherty, sandy limestones and shales occur in central part. Below this is a massive white limestone (not constant in thickness, often missing). At base are calcareous and cherty sandstones which grade into shales on one hand, into nearly pure ferruginous sandstones of the other. In Limestone Ridge lowest strata are thin cherts and flint plates, interbedded with siliceous limestone. In vicinity of Wapanucka, S. Oklahoma folded belt province, sandstone beds occur at base. Whole unit thins westward. 200 ft thick at Limestone Ridge; 30 ft thick at west edge of quad. (Taff, 1901).
References	Heran, W.D., Green, G. and Stoeser, D.B., 2003, A Digital Geologic Map Database of Oklahoma: USGS Open File Report 03-247, scale 1:250,000. https://pubs.er.usgs.gov/publication/ofr03247 Hart, D.L., 1974, Reconnaissance of the water resources of the Ardmore and Sherman quadrangles, southern Oklahoma: Oklahoma Geological Survey, Hydrologic Atlas 3, scale 1:250,000, 4 sheets. (Geology on sheet 1 compiled by D.L. Hart, and R.O. Fay, in 1970.) Cederstrand, J.R., 1996a, Digital geologic map of Ardmore-Sherman quadrangles, south-central Oklahoma: U.S. Geological Survey Open-File Report 96-370, (3 diskettes), URL address is: http://ok.water.usgs.gov/gis/geology https://pubs.er.usgs.gov/publication/ofr96370 Taff, J.A., 1901, Description of the Colgate quadrangle [Indian Territory]: U.S. Geological Survey Geologic Atlas of the United States, Folio 74. https://pubs.er.usgs.gov/publication/gf74
NGMDB product	NGMDB product page for 55294
Counties	Atoka - Coal - Johnston - Pontotoc

State

Oklahoma

Name

Wapanucka Formation

Geologic age

Early Pennsylvanian

Lithologic constituents

Major

Sedimentary > Carbonate > Limestone (Bed)

Comments

Probably named for Wapanucka, in Johnston Co, OK. Crops out as narrow band along eastern border of the older Caney shale (new) in southeast and southwest corners of Coalgate quad, Coal Co, OK, Arkoma basin. Is extensive but thin lentil reaches beyond quad borders. Produces ridges, except where beds are overturned, allowing shale on both sides to erode, leaving limestone unprotected. Abrupt ending of unit at south end of Limestone Ridge due to displacement by an extensive fault. Southward at Boggy Depot, Atoka quad, Ouachita tectonic belt province, it emerges, bearing northwest and continuing to southwest corner Coalgate quad. Beds at top are white, massive, often oolitic. Cherty, sandy limestones and shales occur in central part. Below this is a massive white limestone (not constant in thickness, often missing). At base are calcareous and cherty sandstones which grade into shales on one hand, into nearly pure ferruginous sandstones of the other. In Limestone Ridge lowest strata are thin cherts and flint plates, interbedded with siliceous limestone. In vicinity of Wapanucka, S. Oklahoma folded belt province, sandstone beds occur at base. Whole unit thins westward. 200 ft thick at Limestone Ridge; 30 ft thick at west edge of quad. (Taff, 1901).

References

Heran, W.D., Green, G. and Stoeser, D.B., 2003, A Digital Geologic Map Database of Oklahoma: USGS Open File Report 03-247, scale 1:250,000.

https://pubs.er.usgs.gov/publication/ofr03247

Hart, D.L., 1974, Reconnaissance of the water resources of the Ardmore and Sherman quadrangles, southern Oklahoma: Oklahoma Geological Survey, Hydrologic Atlas 3, scale 1:250,000, 4 sheets. (Geology on sheet 1 compiled by D.L. Hart, and R.O. Fay, in 1970.)

Cederstrand, J.R., 1996a, Digital geologic map of Ardmore-Sherman quadrangles, south-central Oklahoma: U.S. Geological Survey Open-File Report 96-370, (3 diskettes), URL address is: http://ok.water.usgs.gov/gis/geology

https://pubs.er.usgs.gov/publication/ofr96370

Taff, J.A., 1901, Description of the Colgate quadrangle [Indian Territory]: U.S. Geological Survey Geologic Atlas of the United States, Folio 74.

https://pubs.er.usgs.gov/publication/gf74

NGMDB product

NGMDB product page for 55294

Counties

Atoka - Coal - Johnston - Pontotoc