Cathedral Peak (California)

This article is about Cathedral Peak (California). For other uses, see Cathedral Peak.
Cathedral Peak

Cathedral Peak
Highest point
Elevation 10,916 ft (3,327 m)  NAVD 88[1]
Prominence 919 ft (280 m) [1]
Listing SPS Mountaineers peak[2]
Coordinates 37°50′52″N 119°24′20″W / 37.8477028°N 119.4054357°W / 37.8477028; -119.4054357Coordinates: 37°50′52″N 119°24′20″W / 37.8477028°N 119.4054357°W / 37.8477028; -119.4054357 [3]
Geography
Location Yosemite National Park, California, U.S.
Parent range Cathedral Range, Sierra Nevada
Topo map USGS Tenaya Lake
Geology
Age of rock Cretaceous
Mountain type Granite arête
Climbing
First ascent 1869 by John Muir[4]
Easiest route Rock climb class 4[2]

Cathedral Peak is part of the Cathedral Range, a mountain range in the south-central portion of Yosemite National Park in eastern Mariposa and Tuolumne Counties. The range is an offshoot of the Sierra Nevada. The peak which lends its name to the range derives its name from its cathedral-shaped peak, which was formed by glacial activity: the peak remained uneroded above the glaciers in the Pleistocene.

Geography

Cathedral Peak has a subsidiary summit to the west called Eichorn Pinnacle, for Jules Eichorn, who first ascended a class 5.4 route to its summit on July 24, 1931 with Glen Dawson.

In 1869, John Muir wrote in My first summer in the Sierra:

“ The body of the Cathedral is nearly square, and the roof slopes are wonderfully regular and symmetrical, the ridge trending northeast and southwest. This direction has apparently been determined by structure joints in the granite. The gable on the northeast end is magnificent in size and simplicity, and at its base there is a big snow-bank protected by the shadow of the building. The front is adorned with many pinnacles and a tall spire of curious workmanship. Here too the joints in the rock are seen to have played an important part in determining their forms and size and general arrangement. The Cathedral is said to be about eleven thousand feet above the sea, but the height of the building itself above the level of the ridge it stands on is about fifteen hundred feet. A mile or so to the westward there is a handsome lake, and the glacier-polished granite about it is shining so brightly it is not easy in some places to trace the line between the rock and water, both shining alike.[5] ”
Cathedral Peak, with Eichorn Pinnacle in the foreground.
Cathedral Peak, looking southwest across Tuolumne Meadows.

Geology

The Cathedral Peak Granodiorite of Cathedral Peak is an intrusion into an area of older intrusive (or plutonic) and metamorphic rock in the Sierra Nevada Batholith. It is part of a grouping of intrusions called the Tuolumne Intrusive Suite. Cathedral Peak is the youngest of the rock formations in the Suite, dating to the Cretaceous Period at 83 million years ago. Its composition is mainly granodiorite with phenocrysts of microcline.[6]

Cathedral Peak is a nunatak: during the Tioga glaciation of the last ice age, the peak projected above the glaciers, which carved and sharpened the peak's base while plucking away at its sides.[7][8]

See also

References

  1. 1 2 "Cathedral Peak, California". Peakbagger.com. Retrieved 2009-01-15.
  2. 1 2 "Sierra Peaks Section List" (PDF). Angeles Chapter, Sierra Club. Retrieved 2009-01-15.
  3. ↑ "Cathedral Peak". Geographic Names Information System. United States Geological Survey. Retrieved 2009-01-15.
  4. ↑ Farquhar, Francis P. (1926). Place Names of the High Sierra. San Francisco: Sierra Club. Retrieved 2009-01-15.
  5. ↑ Muir, John (1911). My first summer in the Sierra. Sierra Club Books. OCLC 319448481.
  6. ↑ Wahrhaftig, Clyde (2000). "Geologic Map of the Tower Peak Quadrangle, Central Sierra Nevada, California" (PDF). U.S. Geological Survey. Retrieved 2009-01-15.
  7. ↑ "Geologic Resources Inventory Report" (PDF). Yosemite National Park. 2012. Natural Resource Report NPS/NRSS/GRD/NRR—2012/560.
  8. ↑ "Upper Cathedral Lakes". Yosemite Hikes.

External links

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