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The great majority of Yosemite Valley's widening, for example, was due to joint-controlled rockfall. In fact, only 10% of its widening and 12% of its excavation are thought to be the result of glaciation. [3] Large, relatively unjointed volumes of granite form domes such as Half Dome and monoliths like the 3,604 ft (1,098 m) high El Capitan.
Humans may have lived in the Yosemite area as long as 8,000 to 10,000 years ago. [1] Habitation of the Yosemite Valley proper can be traced to about 3,000 years ago, when vegetation and game in the region was similar to that present today; the western slopes of the Sierra Nevada had acorns, deer, and salmon, while the eastern Sierra had pinyon nuts and obsidian. [2]
The rain and melted snow overflowed small creeks and eventually the large Merced River, which flows through Yosemite Valley. [1] Although nearly simultaneous flooding of the Tuolumne River, also originating in Yosemite National Park, did little damage within the park, it did major damage downstream in the City of Modesto. [6]
The oldest rocks in California date back 1.8 billion years to the Proterozoic and are found in the San Gabriel Mountains, San Bernardino Mountains, and Mojave Desert.The rocks of eastern California formed a shallow continental shelf, with massive deposition of limestone during the Paleozoic, and sediments from this time are common in the Sierra Nevada, Klamath Mountains and eastern Transverse ...
The National Park Service is closing most of Yosemite Valley, as the Merced River is expected to reach flood levels Thursday night. The closure starts at 10 a.m. Friday, the park service said Tuesday.
Yosemite National Park said it was closing through at least noon Sunday because of an epic blizzard bearing down on the Sierra Nevada. Yosemite closes due to monster blizzard, 'life threatening ...
The 1996 Yosemite Valley landslide occurred on July 10, 1996, near the Happy Isles trailhead in Yosemite Valley, Yosemite National Park, Mariposa County, California. 162,000 tons of rocks and other debris fell to the ground at over 160 miles per hour. Of the 12 campers /hikers involved in the incident, one was killed.
As the remnants of Helene continue to impact much of the southeastern United States — having made history as the first Category 4 hurricane to land in Florida's Big Bend Region — the storm has ...