- Usage in publication:
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- Quanah granite
- Modifications:
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- Overview
- AAPG geologic province:
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- South Oklahoma folded belt
Taylor, C.H., 1915, Granites of Oklahoma: Oklahoma Geological Survey Bulletin, no. 20, 108 p.
Summary:
Quanah granite is present in the Elk Mountain area, Comanche County, Oklahoma, in S. Oklahoma folded belt province, Wichita Mountains district. Quanah described as a medium-grained, flesh-red, hornblende granite. It is the coarsest grained of all the granites in the Wichita Mountains district. On fresh fracture, shows cleavage surfaces of a flesh-colored feldspar as much as a cm across, rounded grains of clear and slightly smoky quartz to as much as 4 mm in diameter, and prominent irregular patches of greenish-black hornblende. Age is pre-Middle Cambrian age [based on the fact that all of the granites in the Wichita Mountains district are overlain unconformably by the Reagan sandstone which, according to Ulrich (1904), is Middle Cambrian]. Age is Precambrian. Report includes geologic map.
Named from Quanah Mountain, Comanche Co., OK.
Source: Modified from GNU records (USGS DDS-6; Denver GNULEX).
- Usage in publication:
-
- Quanah Granite
- Modifications:
-
- Revised
- AAPG geologic province:
-
- South Oklahoma folded belt
Summary:
Quanah Granite of /Wichita Granite Group revised. Intrudes the newly named Mount Scott Granite in several places in sec. 15, T. 3 N., R. 15 W., Comanche County, east-central Wichita Mountains, Oklahoma (S. Oklahoma folded belt province). Author believes Quanah Granite is a complex pluton. It is younger than Mount Scott Granite, based on its intrusion into Mount Scott. Lugert Granite also intrudes the Mount Scott, in the Snyder area, Kiowa County, Oklahoma. As shown on the accompanying geologic map, the Wichita Granite Group is comprised of (oldest to youngest) Mount Scott, Lugert, and Quanah Granites. Mount Scott Granite was mapped as Lugert Granite by Taylor (1915) and by Hoffman (1930), but the author believes sufficient evidence has accumulated to designate it as a separate granite. Age of Wichita Granite Group is Middle Cambrian(?), approximately 525 m.y., based on isotopic dates provided by Tilton, Wetherill, and Davis (1962). Mount Scott is the oldest granite in the eastern part of the Wichita Mountains. Report includes geologic map, chemical analyses.
[Wichita Granite Group preempted by Wichita [Group] of Cummins (1890) in TX; conflicts with nomenclature guidelines stating a group name combines a geographic name with the term "group," and no lithic designation is included (ACSN, 1961, 1970; NACSN, 1983, 2005, 2021).]
Source: Modified from GNU records (USGS DDS-6; Denver GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
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