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Generalized geologic map of the Yosemite area. (Based on a USGS image) The exposed geology of the Yosemite area includes primarily granitic rocks with some older metamorphic rock. The first rocks were laid down in Precambrian times, when the area around Yosemite National Park was on the edge of a very young North American continent.
Half Dome is a quartz monzonite batholith at the eastern end of Yosemite Valley in Yosemite National Park, California. It is a well-known rock formation in the park, named for its distinct shape. One side is a sheer face while the other three sides are smooth and round, making it appear like a dome cut in half.
Yosemite National Park (/ j oʊ ˈ s ɛ m ɪ t i / yoh-SEM-ih-tee [5]) is a national park of the United States in California. [6] [7] It is bordered on the southeast by Sierra National Forest and on the northwest by Stanislaus National Forest.
The Geologic Story of Yosemite Valley by N. King Huber (USGS, 1987) authoritative and up-to-date summary of Yosemite's geology; Origin of Yosemite Valley, Chapter 4, "Glaciers of California", by Bill Guyton; Historic Yosemite Indian Chiefs – with photos; Daily updating time-lapse movies of Yosemite Valley
Articles concerning the geology of Yosemite National Park in the United States. Pages in category "Geology of Yosemite National Park" The following 24 pages are in this category, out of 24 total.
Yosemite National Park Mariposa County, California, U.S. Parent range: Sierra Nevada: Topo map: USGS Half Dome: Geology; Rock age: Cretaceous: Rock type: Granite: Climbing; First ascent: June 30 - July 4, 1950 by Allen Steck and John Salathé [3] Easiest route: Circular Staircase [4]
The Tuolumne Intrusive Suite is the youngest and most extensive of the intrusive suites of Yosemite National Park, and also comprises about 1/3 of the park's area. The Suite includes Half Dome Granodiorite, Cathedral Peak Granite, and Kuna Crest Granodiorite.
Johnson Granite Porphyry was named for Johnson Peak, the highest mountain in Tuolumne Meadows, Yosemite National Park. [ 1 ] Its area is estimated at 1,100 square kilometres (420 sq mi), the exposed area covering roughly 40 square kilometres (15 sq mi). [ 2 ]