Edgar Peak

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Edgar Peak
Edgar Peak.jpg
West aspect, centered
Highest point
Elevation 7,162 ft (2,183 m) [1] [2]
Prominence 2,225 ft (678 m) [2]
Isolation 24.53 mi (39.48 km) [2]
Coordinates 34°57′20″N115°32′11″W / 34.9555061°N 115.5362833°W / 34.9555061; -115.5362833 [1]
Geography
Relief map of California.png
Red triangle with thick white border.svg
Edgar Peak
Location in California
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Edgar Peak
Edgar Peak (the United States)
CountryUnited States
State California
County San Bernardino
Protected area Mojave National Preserve
Parent range Providence Mountains
Topo map USGS Fountain Peak
Geology
Rock age Jurassic [3]
Mountain type Fault block
Rock type Rhyolite [3]
Climbing
Easiest route class 2+ [2] scrambling

Edgar Peak is a 7,162-foot-elevation (2,183-meter) summit in San Bernardino County, California, United States.

Contents

Description

Edgar Peak is the highest point of the Providence Mountains and the Providence Mountains State Recreation Area. [4] It is set within the Mojave National Preserve. Precipitation runoff from this mountain's west slope drains to Kelso Wash, whereas the east slope drains to Clipper Valley. Topographic relief is significant as the summit rises 3,160 feet (963 meters) above the surrounding terrain in 1.5 miles (2.4 km). An ascent of the summit involves 4.2 miles of strenuous off-trail hiking with 3,000 feet of elevation gain, best done in cooler months from October through May. [5] This mountain's toponym has been officially adopted by the United States Board on Geographic Names. [1] The mountain has also been called "Mount Edgar" in publications going back as early as 1891, [6] [7] and on maps of 1887. [8]

Climate

The peak is set within the Mojave Desert. According to the Köppen climate classification system, Edgar Peak has a cold desert climate, with the lower surrounding terrain in a hot desert climate zone. Temperatures average between 10 °F to 30 °F in January, and 50 °F to 100 °F in July. [9] Typical of high deserts, summer temperatures can be exceedingly hot, while winter temperatures can be cold. Winter snowfall melts rapidly in the arid and sunny climate.

Geology

Edgar Peak is composed of multiple rock formations. The top is composed of Jurassic Fountain Peak Rhyolite with a mean age of 164 Ma. The rhyolite cuts across and intrudes adjacent sedimentary units and is interpreted to represent the feeder system of an extrusive dome. [3] The sedimentary units consist of limestone and sandstone members of the Triassic Moenkopi Formation, and the Permian Bird Spring Formation which is predominantly limestone.

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<span class="mw-page-title-main">Mojave National Preserve</span> Protected wilderness area in California, United States

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<span class="mw-page-title-main">Transverse Ranges</span> Group of mountain ranges of southern California

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<span class="mw-page-title-main">Granite Mountains (California)</span> Mountain range in California, United States

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Kelso Dunes, also known as the Kelso Dune Field, is the largest field of aeolian sand deposits in the Mojave Desert. The region is protected by the Mojave National Preserve and is located near the town of Baker, San Bernardino County, California, and the Preserve Visitor Center. The dune field covers 45 square miles (120 km2) and includes migrating dunes, vegetation-stabilized dunes, sand sheets, and sand ramps. The tallest dunes rise up to 650 feet (200 m) above the surrounding terrain.

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<span class="mw-page-title-main">Mount Wilbur (Montana)</span> Mountain in the state of Montana

Mount Wilbur is located in the Lewis Range, Glacier National Park in the U.S. state of Montana. Plainly visible from the region of Many Glacier, the peak rises over 4,500 feet (1,372 m) above Swiftcurrent Lake and is a steep pyramid on three sides. The west slopes of the peak join to ridges along the continental divide. Much of the climbing routes are rated at class 4 to 5, with some only used once. The sedimentary rock of the mountains makes for often poor anchoring points and enhances the difficulty. A cirque on the north slopes of the mountain shelters Iceberg Lake, a popular hiking destination from Many Glacier. The mountain was named by George Bird Grinnell in 1885, for Edward R. Wilbur of New York, one of Grinnell's partners in the Forest and Stream Publishing Company, and both men were founders of the Audubon Society.

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References

  1. 1 2 3 U.S. Geological Survey Geographic Names Information System: Edgar Peak
  2. 1 2 3 4 "Edgar Peak - 7,162' CA". listsofjohn.com. Retrieved September 30, 2024.
  3. 1 2 3 Geologic Map of the Providence Mountains in Parts of the Fountain Peak and Adjacent 7.5′ Quadrangles, San Bernardino County, California, Paul Stone, U.S. Geological Survey, 2017.
  4. "Edgar Peak, Peakvisor.com" . Retrieved September 30, 2024.
  5. David Harris, Afoot & Afield: Inland Empire, Wilderness Press, 2018, ISBN   9780899978161
  6. Appendix to the Journals of the State and Assembly of the Twenty-Ninth Session of the Legislature of the State of California, Vol. V, 1891, p. 519.
  7. Biennial Report, California State Board of Horticulture, 1892, p. 203.
  8. Cram's Universal Atlas, George Franklin Cram, 1887, p. 67.
  9. Peel, M. C.; Finlayson, B. L. & McMahon, T. A. (2007). "Updated world map of the Köppen−Geiger climate classification". Hydrology and Earth System Sciences. 11 (5): 1633–1644. Bibcode:2007HESS...11.1633P. doi: 10.5194/hess-11-1633-2007 . ISSN   1027-5606. S2CID   9654551.