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The origin of the geological landscapes of the park have been under debate since 1865. At that time, Josiah Whitney, then chief geologist of California, proposed that Yosemite Valley is a graben: a downdropped block of land surrounded by faults. John Muir proposed that Yosemite Valley and Hetch Hetchy Valley were
The Cathedral Peak Granodiorite forms part of the central eastern Sierra Nevada in California. It is exposed in glaciated outcrops from the upper Yosemite Valley into the high Sierra Divide. It covers large parts of Mariposa County and Tuolumne County and also touches Madera County and Mono County.
The work of Ayres gave Easterners an appreciation for Yosemite Valley and started a movement to preserve it. [23] Influential figures such as Galen Clark, clergyman Thomas Starr King and leading landscape architect Frederick Law Olmsted were among those who urged Senator John Conness of California to try to preserve Yosemite. [24]
Two federally designated Wild and Scenic Rivers, the Merced and the Tuolumne, begin within Yosemite's borders and flow westward through the Sierra foothills, into the Central Valley of California. Annual park visitation exceeds 3.5 million, with most visitor use concentrated in the seven-square-mile (18 km 2) area of Yosemite Valley. [1]
The Ferguson Slide is an active landslide in the Merced River canyon on California State Highway 140, a primary access road to Yosemite National Park. Soil, regolith, and rock move downslope under the force of gravity via creep, slides, flows, topples, and falls.
Park visitors will be in awe of the park’s well-known waterfalls that are still flowing with gusto. Among them: Vernal Fall, Nevada Fall, Bridalveil Fall, Yosemite Falls, Sentinel Falls, Ribbon ...
The horsetail waterfall in Yosemite National Park in California as the Fire Fall during winter. (Getty Images/Jorge Villalba) The peak of the firefall is around Feb. 21, but the evenings leading ...
The Mono Basin is an endorheic drainage basin located east of Yosemite National Park in California and Nevada. [3] [4] It is bordered to the west by the Sierra Nevada, to the east by the Cowtrack Mountains, to the north by the Bodie Hills, and to the south by the north ridge of the Long Valley Caldera.