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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.
The natural and cultural history of Yosemite Valley is presented at the Yosemite Valley Visitor Center, the adjoining Yosemite Museum, and the Nature Center at Happy Isles. The parks' two National Historic Landmarks are the Sierra Club 's LeConte Memorial Lodge (Yosemite's first public visitor center), and the Ahwahnee Hotel.
San Francisco Mayor James D. Phelan hired USGS engineer Joseph P. Lippincott in 1900 to perform a discreet survey of Hetch Hetchy Valley, located north of Yosemite Valley in the national park. [73] His report stated that a dam of the Tuolumne River in the Hetch Hetchy Valley was the best choice to create a drinking water reservoir for the city.
Geological Ramblings in Yosemite. Heyday. ISBN 978-1-59714-072-0. Jones, Ray (2010). It Happened in Yosemite National Park: Remarkable Events That Shaped History. Globe Pequot. ISBN 978-0-7627-6231-6. Matthes, François (1930). Geologic history of the Yosemite valley. United States Government Printing Office. Righter, Robert W. (2005).
Yosemite National Park is steeped in history and natural beauty. Here's what to know about visiting Yosemite. Over 4,000 years of history, waterfalls and giant sequoias: Why Yosemite park is 'iconic'
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.
Calkins in 1901. Frank Cathcart Calkins (June 7, 1878 – December 31, 1974) was an American geologist, petrologist, and mapper of the U.S. Geological Survey known for his work on the geology of Yosemite National Park.
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