User:Geotechnogeek/Wichita Granite Group

The Wichita Granite Group are medium- to fine-grained alkali-feldspar granite rocks of Cambrian age exposed in the Wichita Mountains of southwestern Oklahoma. All exhibit a reddish color imparted by small desseminated hematite grains. They are broken into several mappable units based on composition, texture, and cross-cutting relationships^[1]. Exposures form isolated peaks and rocky uplands that support only thin soils that locally thicken within fractures and potholes.

Units

The individual lithostratigraphic units were largely defined By M.C. Gilbert^[1], and are presented in terms of their outcrop region and relative age (younger to older). Oklahoma state highway 54 is the approximate division for the two geographic provinces.

Western Province

Lugert Granite

Type locality: Mount Lugert

Cooperton Granite

Long Mountain Granite

Long Mountain

Reformatory Granite^[2]^[3]^[1]

Example locality: Walsh Mountain, north of Granite, OK, 34°58′33″N 99°28′35″W / 34.97583°N 99.47639°W / 34.97583; -99.47639

Headquarters Granite

Eastern Province

Quanah Granite^[2]^[4]^[1]

Example locality: south of Quanah Parker Lake 34°42′10″N 98°38′5″W / 34.70278°N 98.63472°W / 34.70278; -98.63472

Cache Granite^[1]

Saddle Mountain Granite^[1]

Mount Scott Granite^[1]

Type localities: Mount Scott and the Ira Smith Quarry

Medicine Park Granite^[1]

Example locality: the hillslope above Medicine Park

Rush Lake granite

Example locality: Rush Lake

Uses

In general the Wichita Granite group has been exploited for fill and road metal. More extensive quarrying for dimension stone is confined to the Reformatory Granite in and around the town of Granite.

References

^ ^a ^b ^c ^d ^e ^f ^g ^h Myers, J.D. (1981). "Geochemistry of the Cambrian Wichita Granite Group and revisions of its lithostratigraphy". Oklahoma Geology Notes. 41: 172–195. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
^ ^a ^b Taylor, C.H. (1915). "Granites of Oklahoma". Oklahoma Geological Survey Bulletin. 20: 108 p.
^ Merritt, C.A. (1958). "Igneous geology of the Lake Altus area". Oklahoma Geological Survey Bulletin. 76: 70 p.
^ Chase, G.W. (1954). "Resume of the geology of the Wichita Mountains, Oklahoma". Petroleum Geology of Southern Oklahoma. 1: 35–55. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)

External links

[[Category:Granitic rocks]] {{Petrology-stub}}

[gilbert81-1] ^ ^a ^b ^c ^d ^e ^f ^g ^h Myers, J.D. (1981). "Geochemistry of the Cambrian Wichita Granite Group and revisions of its lithostratigraphy". Oklahoma Geology Notes. 41: 172–195. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)

[Taylor-2] Taylor, C.H. (1915). "Granites of Oklahoma". Oklahoma Geological Survey Bulletin. 20: 108 p.

[3] Merritt, C.A. (1958). "Igneous geology of the Lake Altus area". Oklahoma Geological Survey Bulletin. 76: 70 p.

[4] Chase, G.W. (1954). "Resume of the geology of the Wichita Mountains, Oklahoma". Petroleum Geology of Southern Oklahoma. 1: 35–55. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)

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