Wichita Granite Group (OKCAwg;0)

State	Oklahoma
Name	Wichita Granite Group
Geologic age	Middle Cambrian
Lithologic constituents	Major Igneous > Plutonic > Granitic > Granite (Pluton)
Comments	Probably named for Wichita Mountains of southern OK. Report area is southern Oklahoma, where it is present in (east to west, mostly subsurface): western Jefferson, Cotton, Comanche, Kiowa, and Greer Cos (South Oklahoma folded belt province); Beckham and Washita Cos (Anadarko basin); and Jackson and Harmon Cos (Palo Duro basin). Consists chiefly of perthite leucogranites of various textures representing multiple intrusions, in part having the form of extensive sills 600 to 1,500 ft thick intruding the lower part of the Carlton Rhyolite Group [revised--Carlton is the extrusive equivalent of Wichita], and in part occurring as irregular plutons and sills cutting all other rocks of the "Wichita Province." (Ham, 1963).
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 Carr, J.E. and Bergman, D.L., 1976, Reconnaissance of the water resources of the Clinton quadrangle, west-central Oklahoma: Oklahoma Geological Survey, Hydrologic Atlas 5, scale 1:250,000, 4 sheets. (Geology on sheet 1 compiled by J.E. Carr, 1972, and R.O. Fay, 1975.) Cederstrand, J.R., 1996d, Digital geologic map of Clinton quadrangles, west-central Oklahoma: U.S. Geological Survey Open-File Report 96-373, (2 diskettes), URL address is: http://ok.water.usgs.gov/gis/geology https://pubs.er.usgs.gov/publication/ofr96373 Havens, J.S., 1977, Reconnaissance of the water resources of the Lawton quadrangle, southwestern Oklahoma: Oklahoma Geological Survey, Hydrologic Atlas 6, scale 1:250,000, 4 sheets. (Geology on sheet 1 compiled by R.O. Fay, 1967-68 and J.S. Havens, 1973.) Cederstrand, J.R., 1996g, Digital geologic map of Lawton quadrangles, southwestern Oklahoma: U.S. Geological Survey Open-File Report 96-376, (3 diskettes), URL address is: http://ok.water.usgs.gov/gis/geology https://pubs.er.usgs.gov/publication/ofr96376 Ham, W.E., 1963, Basement rocks and structural evolution of southern Oklahoma; a summary: [Monograph] Basement rocks and structural evolution of southern Oklahoma, Ardmore Geol. Soc., Field Conf. Guidebook.
NGMDB product	NGMDB product page for 55294
Counties	Comanche - Greer - Jackson - Kiowa - Tillman

State

Oklahoma

Name

Wichita Granite Group

Geologic age

Middle Cambrian

Lithologic constituents

Major

Igneous > Plutonic > Granitic > Granite (Pluton)

Comments

Probably named for Wichita Mountains of southern OK. Report area is southern Oklahoma, where it is present in (east to west, mostly subsurface): western Jefferson, Cotton, Comanche, Kiowa, and Greer Cos (South Oklahoma folded belt province); Beckham and Washita Cos (Anadarko basin); and Jackson and Harmon Cos (Palo Duro basin). Consists chiefly of perthite leucogranites of various textures representing multiple intrusions, in part having the form of extensive sills 600 to 1,500 ft thick intruding the lower part of the Carlton Rhyolite Group [revised--Carlton is the extrusive equivalent of Wichita], and in part occurring as irregular plutons and sills cutting all other rocks of the "Wichita Province." (Ham, 1963).

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

Carr, J.E. and Bergman, D.L., 1976, Reconnaissance of the water resources of the Clinton quadrangle, west-central Oklahoma: Oklahoma Geological Survey, Hydrologic Atlas 5, scale 1:250,000, 4 sheets. (Geology on sheet 1 compiled by J.E. Carr, 1972, and R.O. Fay, 1975.)

Cederstrand, J.R., 1996d, Digital geologic map of Clinton quadrangles, west-central Oklahoma: U.S. Geological Survey Open-File Report 96-373, (2 diskettes), URL address is: http://ok.water.usgs.gov/gis/geology

https://pubs.er.usgs.gov/publication/ofr96373

Havens, J.S., 1977, Reconnaissance of the water resources of the Lawton quadrangle, southwestern Oklahoma: Oklahoma Geological Survey, Hydrologic Atlas 6, scale 1:250,000, 4 sheets. (Geology on sheet 1 compiled by R.O. Fay, 1967-68 and J.S. Havens, 1973.)

Cederstrand, J.R., 1996g, Digital geologic map of Lawton quadrangles, southwestern Oklahoma: U.S. Geological Survey Open-File Report 96-376, (3 diskettes), URL address is: http://ok.water.usgs.gov/gis/geology

https://pubs.er.usgs.gov/publication/ofr96376

Ham, W.E., 1963, Basement rocks and structural evolution of southern Oklahoma; a summary: [Monograph] Basement rocks and structural evolution of southern Oklahoma, Ardmore Geol. Soc., Field Conf. Guidebook.

NGMDB product

NGMDB product page for 55294

Counties

Comanche - Greer - Jackson - Kiowa - Tillman