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Lyell Glacier
Lyell Glacier is in the Sierra Nevada of California. The glacier was discovered by John Muir in 1871, and was the largest glacier in Yosemite National Park. It lies on the northern slopes of Mount Lyell. The glacier has retreated since the end of the Little Ice Age in the mid-19th century. During the mid-20th Century, the glacier split into two smaller glaciers occupying the high cirques of Mount Lyell. Since 1883, the glacier area has retreated up to 70 percent. Another glacier, the Maclure Glacier on nearby Mount Maclure, has also retreated significantly. According to a study in 2013, today the Lyell is no longer a glacier, having lost any movement and thus it should be considered an ice field. See also *List of glaciers in the United States Glaciers are located in ten states, with the vast majority in Alaska. The southernmost named glacier is the Lilliput Glacier in Tulare County, California, Tulare County, east of the Central Valley (California), Central Valley ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yosemite National Park
Yosemite National Park ( ) is a List of national parks of the United States, national park of the United States in California. It is bordered on the southeast by Sierra National Forest and on the northwest by Stanislaus National Forest. The park is managed by the National Park Service and covers in four County, countiescentered in Tuolumne County, California, Tuolumne and Mariposa County, California, Mariposa, extending north and east to Mono County, California, Mono and south to Madera County, California, Madera. Designated a World Heritage Site in 1984, Yosemite is internationally recognized for its granite cliffs, waterfalls, clear streams, groves of Sequoiadendron giganteum, giant sequoia, lakes, mountains, meadows, glaciers, and Biodiversity, biological diversity. Almost 95 percent of the park is designated National Wilderness Preservation System, wilderness. Yosemite is one of the largest and least fragmented habitat blocks in the Sierra Nevada. Its geology of the Yosem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maclure Glacier
Maclure Glacier (also McClure Glacier) is on Mount Maclure in the Sierra Nevada crest of Yosemite National Park in Tuolumne County, California, United States. The glacier is named after William Maclure. Like most glaciers in the Sierra Nevada, Maclure Glacier is a small cirque glacier that is long and covers an area of only . The mean elevation of the glacier is around . Both the Maclure Glacier and the Lyell Glacier, located nearby on Mount Lyell, have retreated since their first discovery. See also *List of glaciers in the United States Glaciers are located in ten states, with the vast majority in Alaska. The southernmost named glacier is the Lilliput Glacier in Tulare County, California, Tulare County, east of the Central Valley (California), Central Valley of California. Apa ... References Glaciers of California Glaciers of Tuolumne County, California Glaciers of the Sierra Nevada (United States) {{US-glacier-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glaciers Of Tuolumne County, California
A glacier (; or ) is a persistent body of dense ice, a form of rock, that is constantly moving downhill under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires distinguishing features, such as crevasses and seracs, as it slowly flows and deforms under stresses induced by its weight. As it moves, it abrades rock and debris from its substrate to create landforms such as cirques, moraines, or fjords. Although a glacier may flow into a body of water, it forms only on land“Glacier, N., Pronunciation.” Oxford English Dictionary, Oxford UP, June 2024, https://doi.org/10.1093/OED/7553486115. Accessed 25 Jan. 2025. and is distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water. On Earth, 99% of glacial ice is contained within vast ice sheets (also known as "continental glaciers") in the polar regions, but glaciers may be found in mountain ranges on every cont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landforms Of Yosemite National Park
A landform is a land feature on the solid surface of the Earth or other planetary body. They may be natural or may be anthropogenic (caused or influenced by human activity). Landforms together make up a given terrain, and their arrangement in the landscape is known as topography. Landforms include hills, mountains, canyons, and valleys, as well as shoreline features such as bays, peninsulas, and seas, including submerged features such as mid-ocean ridges, volcanoes, and the great oceanic basins. Physical characteristics Landforms are categorized by characteristic physical attributes such as elevation, slope, orientation, structure stratification, rock exposure, and soil type. Gross physical features or landforms include intuitive elements such as berms, cliffs, hills, mounds, peninsulas, ridges, rivers, valleys, volcanoes, and numerous other structural and size-scaled (e.g. ponds vs. lakes, hills vs. mountains) elements including various kinds of inland and oceanic waterbodi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glaciers Of California
A glacier (; or ) is a persistent body of dense ice, a form of rock, that is constantly moving downhill under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires distinguishing features, such as crevasses and seracs, as it slowly flows and deforms under stresses induced by its weight. As it moves, it abrades rock and debris from its substrate to create landforms such as cirques, moraines, or fjords. Although a glacier may flow into a body of water, it forms only on land“Glacier, N., Pronunciation.” Oxford English Dictionary, Oxford UP, June 2024, https://doi.org/10.1093/OED/7553486115. Accessed 25 Jan. 2025. and is distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water. On Earth, 99% of glacial ice is contained within vast ice sheets (also known as "continental glaciers") in the polar regions, but glaciers may be found in mountain ranges on every continen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Glaciers In The United States
Glaciers are located in ten states, with the vast majority in Alaska. The southernmost named glacier is the Lilliput Glacier in Tulare County, California, Tulare County, east of the Central Valley (California), Central Valley of California. Apart from Alaska, around 1330 glaciers, 1175 perennial snow fields, and 35 Rock glacier, buried-ice features have been identified. Glaciers of Alaska There are approximately 664 named glaciers in Alaska according to the Geographic Names Information System (GNIS). Glaciers of the Pacific Coast Ranges The Pacific Coast Ranges include glaciers in the three states on the Pacific Coast. Washington There are around 880 glaciers in Washington state, with 186 named according to the Geographic Names Information System (GNIS). However, the 1980 eruption of Mount St. Helens eliminated nine of its eleven named glaciers and only the new glacier known as Crater Glacier has been reestablished since. ; Olympic Mountains ;; Mount Olympus (Washi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Maclure
Mount Maclure is the nearest neighbor to Mount Lyell, the highest point in Yosemite National Park. Mount Maclure is the fifth-highest mountain of Yosemite. Mount Maclure is located at the southeast end of the Cathedral Range, about northwest of Lyell. The summit is on the boundary between Madera and Tuolumne counties which is also the boundary between the park and the Ansel Adams Wilderness. It was named in honor of William Maclure, a pioneer in American geology who produced the first geological maps of the United States. Maclure Glacier, one of the last remaining glaciers in Yosemite, is situated on the mountain's northern flank. The easiest climbing route leaves the John Muir Trail about south of Tuolumne Meadows and traverses the Maclure Glacier to the summit. See also * Rodgers Peak (California) * Simmons Peak Simmons Peak is a mountain, in the Tuolumne Meadows region of Yosemite National Park. In difficulty, its routes range from scrambling Scrambling is a mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirque
A (; from the Latin word ) is an amphitheatre-like valley formed by Glacier#Erosion, glacial erosion. Alternative names for this landform are corrie (from , meaning a pot or cauldron) and ; ). A cirque may also be a similarly shaped landform arising from fluvial erosion. The concave shape of a glacial cirque is open on the downhill side, while the cupped section is generally steep. Cliff-like slopes, down which ice and glaciated debris combine and converge, form the three or more higher sides. The floor of the cirque ends up bowl-shaped, as it is the complex convergence zone of combining ice flows from multiple directions and their accompanying rock burdens. Hence, it experiences somewhat greater erosion forces and is most often overdeepening, overdeepened below the level of the cirque's low-side outlet (stage) and its down-slope (backstage) valley. If the cirque is subject to seasonal melting, the floor of the cirque most often forms a tarn (lake), tarn (small lake) behind a d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuolumne County, California
Tuolumne County (), officially the County of Tuolumne, is a County (United States), county located in the U.S. state of California. As of the 2020 United States census, 2020 census, the population was 55,620. The county seat and only incorporated city is Sonora, California, Sonora. Tuolumne County comprises the Sonora, CA Micropolitan Statistical Area. The county is in the Sierra Nevada region. The northern half of Yosemite National Park is located in the eastern part of the county. Etymology The name ''Tuolumne'' is of Native Americans in the United States, Native American origin and has been given different meanings, such as Many Stone Houses, The Land of Mountain Lions, and Straight Up Steep, the latter an interpretation of Chief William Fuller, William Fuller, a native Chief. Mariano Vallejo, in his report to the first California State Legislature, said that the word is "a corruption of the Native American word ''talmalamne'' which signifies 'cluster of stone wigwams.'" T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Little Ice Age
The Little Ice Age (LIA) was a period of regional cooling, particularly pronounced in the North Atlantic region. It was not a true ice age of global extent. The term was introduced into scientific literature by François E. Matthes in 1939. Matthes described glaciers in the Sierra Nevada (U.S.), Sierra Nevada of California that he believed could not have survived the hypsithermal; his usage of "Little Ice Age" has been superseded by "Neoglaciation". The period has been conventionally defined as extending from the 16th to the 19th centuries, (noted in Grove 2004: 4). but some experts prefer an alternative time-span from about 1300 to about 1850. The NASA Earth Observatory notes three particularly cold intervals. One began about 1650, another about 1770, and the last in 1850, all of which were separated by intervals of slight warming. The Intergovernmental Panel on Climate Change IPCC Third Assessment Report, Third Assessment Report considered that the timing and the areas affecte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Lyell (California)
Mount Lyell is the highest point in Yosemite National Park, at . It is located at the southeast end of the Cathedral Range, northwest of Rodgers Peak. The peak as well as nearby Lyell Canyon is named after Charles Lyell, a well-known 19th century geologist. The peak had one of the last remaining glaciers in Yosemite, Lyell Glacier. The Lyell Glacier is currently considered to be a permanent ice field, not a living glacier. Mount Lyell divides the Tuolumne River watershed to the north, the Merced to the west, and the Rush Creek drainage in the Mono Lake Basin to the southeast. Climbing The most common approach to Mount Lyell is from Tuolumne Meadows on a highly traveled section of the John Muir Trail. The round trip is approximately and involves of elevation gain when starting from the Tuolumne Wilderness Office. The hike is easy from Tuolumne Meadows, following the Tuolumne River to the head of the Lyell Canyon, and becomes moderate as it approaches Donohue Pass. Before re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
