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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.
Neoglaciation had been marked by a retreat from the warm conditions of the Climatic Optimum and the advance or reformation of glaciers that had not existed since the last ice age. In the mountains of western North America, montane glaciers that had completely melted reformed shortly before 5000 BP . [ 2 ]
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 .
Now we know the valley and surrounding area as Yosemite National Park – one of America’s most popular national parks, with 3,897,070 million visitors in 2023 – designated in 1890. You have ...
Mount Lyell is the highest point in Yosemite National Park, at 13,114 feet (3,997 m). It is located at the southeast end of the Cathedral Range, 1 + 1 ⁄ 4 miles (2 kilometers) northwest of Rodgers Peak. The peak as well as nearby Lyell Canyon is named after Charles Lyell, a well-known 19th century geologist. [7]
The glacier was discovered by John Muir in 1871, [2] and was the largest glacier in Yosemite National Park. It lies on the northern slopes of Mount Lyell. [3] The glacier has retreated since the end of the Little Ice Age in the mid-19th century.
Located in Alaska's Denali National Park and Preserve, Denali is the tallest mountain in North America, even taller than Everest if you measure it from base to summit.At 20,310 feet above sea ...
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]