Whetstone Mountain

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Whetstone Mountain
Whetstone Mountain, CO.jpg
Highest point
Elevation 12,527 ft (3,818 m) [1] [2]
Prominence 2,456 ft (749 m) [3]
Isolation 9.39 mi (15.11 km) [3]
Listing Colorado prominent summits
Coordinates 38°49′20″N106°58′48″W / 38.8223016°N 106.9798991°W / 38.8223016; -106.9798991 Coordinates: 38°49′20″N106°58′48″W / 38.8223016°N 106.9798991°W / 38.8223016; -106.9798991 [1]
Geography
USA Colorado location map.svg
Red triangle with thick white border.svg
Whetstone Mountain
Location Gunnison County, Colorado,
United States [4]
Parent range West Elk Mountains [3]
Topo map USGS 7.5' topographic map
Crested Butte, Colorado [1]
Climbing
Easiest route hike

Whetstone Mountain, elevation 12,527 ft (3,818 m), is a summit in the Gunnison National Forest of western Colorado. The mountain is located 3 mi (4.8 km) south of Crested Butte in Gunnison County. Whetstone Mountain is one of several prominent laccoliths found in the West Elk Mountains.

Contents

Geology

Whetstone Mountain is a laccolith, formed when magma intruded into sedimentary strata of Mancos Shale and the Mesaverde Formation approximately 30 million years ago. Subsequent erosion has removed the softer, overlying sedimentary rock thereby exposing the more resistant igneous rock that characterizes the mountain today. The mountain is composed of quartz monzonite porphyry and granodiorite porphyry. Whetstone Mountain was glaciated, and the most prominent glacial cirques are located on the north side of the mountain. [5] [6]

The mountain’s name stems from rock collected in the area by the Hayden Survey during the early 1870s. Whetstones (also called hornfels) are contact metamorphic rocks useful for sharpening tools. [4]

Historical names

See also

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References

  1. 1 2 3 "WHETSTONE MTN CAIRN". NGS data sheet. U.S. National Geodetic Survey.
  2. The elevation of Whetstone Mountain includes an adjustment of +1.922 m (+6.31 ft) from NGVD 29 to NAVD 88.
  3. 1 2 3 "Whetstone Mountain, Colorado". Peakbagger.com. Retrieved October 23, 2014.
  4. 1 2 3 "Whetstone Mountain". Geographic Names Information System . United States Geological Survey . Retrieved November 14, 2014.
  5. Prather, Thomas (1999). Geology of the Gunnison Country (2nd ed.). Gunnison, Colorado: B&B Printers. LCCN   82-177244.
  6. Gaskill, David. L.; Colman, Steven M.; Delong, J. E.; Robinson, Charles H. (1986). Geologic map of the Crested Butte quadrangle, Gunnison County, Colorado. Washington, DC: U.S. Geological Survey. Retrieved 11 November 2020.