| Mokelumne Peak | |
|---|---|
 | |
| Highest point | |
| Elevation | 9,337 ft (2,846 m)[1] |
| Prominence | 1,494 ft (455 m)[2] |
| Isolation | 7.31 mi (11.76 km)[2] |
| Listing |
|
| Coordinates | 38°32′17″N120°05′40″W / 38.538161544°N 120.094435417°W /38.538161544; -120.094435417[1] |
| Geography | |
  Mokelumne Peak | |
| Location | |
| Parent range | Sierra Nevada |
| Climbing | |
| Easiest route | Simple Scramble,class 2[4] |
Mokelumne Peak is a peak in theMokelumne Wilderness,Sierra Nevada,Amador County, California, consisting ofmetamorphic andgranitic rock.
Mokelumne Peak has the largest body ofmetamorphic rock in the region, called the Mokelumne Peakroof pendant, extending over an area of 15 square miles (39 km2). These rocks were originallyJurassic orCretaceous age, but were metamorphosed whenplutons of theSierra Nevada batholith intruded in theCretaceous. The pendant may be several thousand feet thick. Rocks of the pendant includequartz-feldspar-biotiteschist andgneiss. The pendant has concentric zones of different metamorphic rock types around a central core of highly folded and contorted gneiss.[6]
The granite of the batholith surrounding the roof pendant is thegranodiorite ofCaples Lake. The granite is medium- to coarse-grainedporphyritichornblende-biotite granodiorite, determined byK-Ar dating to be between 91.7 and 99.6 million years old.[6]
Thirty mining claims were staked on Mokelumne Peak between 1929 and 1934. Rocks on the east side of the peak containarsenopyrite,chalcopyrite, andbornite. Samples contained 0.3 grams per ton ofgold and 7 grams per ton ofsilver.[6]
This article incorporatespublic domain material fromMcKee, EH; et al. (1982).Mineral Resource Potential of the Mokelumne Wilderness and Contiguous Roadless Areas, central Sierra Nevada, California(PDF).United States Geological Survey.doi:10.3133/mf1201D. MF-1201-D.| Mountains |
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