Wichita Granite Group

CLINTON- Pink, medium-grained granite; three outliers have been mapped in the southern part of quadrangle. LAWTON- Granites of various textures; thickness, 600 to 15,000 feet (180 to 4,570 m).
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
Counties Comanche - Greer - Jackson - Kiowa - Tillman