Graystone Peak

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Coordinates: 37°41′21″N 107°37′09″W / 37.6892161°N 107.6191513°W / 37.6892161; -107.6191513
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Graystone Peak
Northwest aspect, from Molas Lake
Highest point
Elevation13,489 ft (4,111 m)[1][2]
Prominence502 ft (153 m)[3]
Parent peakArrow Peak (13,809 ft)[3]
Isolation0.56 mi (0.90 km)[3]
Coordinates37°41′21″N 107°37′09″W / 37.6892161°N 107.6191513°W / 37.6892161; -107.6191513[4]
Geography
Graystone Peak is located in Colorado
Graystone Peak
Graystone Peak
Location in Colorado
Graystone Peak is located in the United States
Graystone Peak
Graystone Peak
Graystone Peak (the United States)
CountryUnited States
State
class 2 hiking[3]

Graystone Peak is a 13,489-foot-elevation (4,111-meter) mountain summit located in San Juan County, Colorado, United States.

Description

Graystone Peak is situated 8.5 miles (13.7 km) south-southeast of the community of

Topographic relief is significant as the summit rises 4,800 feet (1,500 meters) above the river in two miles (3.2 km) and 2,890 feet (880 meters) above Tenmile Creek in 0.85 mile (1.37 km). It is set six miles west of the Continental Divide, 0.7 mile south of Electric Peak, and one mile east-southeast of Mount Garfield. These three peaks can be seen from U.S. Route 550 at Molas Lake. The mountain's toponym has been officially adopted by the United States Board on Geographic Names,[4] and was recorded in publications as early as 1906.[5]

Climate

According to the Köppen climate classification system, Graystone Peak is located in an alpine subarctic climate zone with very long, cold, snowy winters, and cool to warm summers.[6] Due to its altitude, it receives precipitation all year, as snow in winter and as thunderstorms in summer, with a dry period in late spring.

Geology

Graystone Peak is part of the Uncompahgre Formation,[7] which is a sequence of quartzite and black phyllite some 8,200 feet (2,500 meters) in thickness.[8] The formation dates to the Statherian period and is interpreted as metamorphosed marine and fluvial sandstone, mudstone, and shale. The formation overlies plutons with an age of 1,707 million years.

Gallery

  • Electric Peak, Graystone Peak (center), Mt. Garfield (right) viewed from Molas Lake
    Electric Peak, Graystone Peak (center), Mt. Garfield (right) viewed from Molas Lake
  • Electric Peak, Graystone Peak (center), Mt. Garfield (right) from Molas Lake
    Electric Peak, Graystone Peak (center), Mt. Garfield (right) from Molas Lake
  • Electric Peak, Graystone Peak (center), Mt. Garfield (right)
    Electric Peak, Graystone Peak (center), Mt. Garfield (right)
  • Northeast aspect of Arrow Peak to left, Graystone Peak centered and Electric Peak to right
    Northeast aspect of Arrow Peak to left, Graystone Peak centered and Electric Peak to right
  • Graystone Peak to the right
    Graystone Peak to the right
  • Graystone Peak centered
    Graystone Peak centered

See also

References

  1. ^ Robert F. Rosebrough, The San Juan Mountains: A Climbing & Hiking Guide, Cordillera Press, 1986, page 170.
  2. ^ a b c "Graystone Peak, Colorado". Peakbagger.com. Retrieved May 24, 2023.
  3. ^ a b c d "Graystone Peak - 13,503' CO". listsofjohn.com. Retrieved May 24, 2023.
  4. ^ a b "Graystone Peak". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved May 24, 2023.
  5. ^ Henry Gannett, United States Geological Survey (1906), A Gazetteer of Colorado, US Government Printing Office, p. 80.
  6. ISSN 1027-5606
    .
  7. ^ Colorado Needle Mountains Quadrangle, Charles D. Walcott, U.S. Geological Survey, 1906.
  8. ISBN 9780870813788
    , page 350.

External links
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