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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.
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 (/ 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
Wawona Tunnel Tree, August 1962. The Wawona Tree, also known as the Wawona Tunnel Tree, was a famous giant sequoia that stood in Mariposa Grove, Yosemite National Park, California, United States, until February 1969. It had a height of 227 feet (69 m) and was 26 feet (7.9 m) in diameter at the base.
The Lyell Glacier is the largest glacier in Yosemite National Park and is one of the few remaining in the Sierra Nevada today. The park has three groves of ancient giant sequoia (Sequoiadendron giganteum) trees; the Mariposa Grove (200 trees), the Tuolumne Grove (25 trees), and the Merced Grove (20 trees). [8]
From 1891 to 1913, the U.S. Army protected Yosemite National Park. [9] In 1859, publisher James M. Hutchings, on the advice of naturalist Galen Clark, named the tree the Grizzled Giant. [10] [11] By 1888, it was commonly known as the Grizzly Giant. Hutchings said the tree "looks at you as defiantly as the oldest veteran grizzly bear ever could ...
Clothespin Tree: Fire damage has shaped this tree's trunk like a clothespin. A 50 yards (46 m) walk to its base reveals a 70 feet (21 m) high, 16 feet (4.9 m) wide opening. Despite its lean, the tree may still stand for generations. [33] 266 [33] Columbia Tree: The tallest tree in the grove and in Yosemite National Park at 286 feet (87 m). 286 [33]