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Mount Dana (other)
Mount Dana is a mountain in the U.S. state of California. Its summit marks the eastern boundary of Yosemite National Park and the western boundary of the Ansel Adams Wilderness. At an elevation of , it is the second highest mountain in Yosemite (after Mount Lyell), and the northernmost summit in the Sierra Nevada which is over in elevation. Mount Dana is the highest peak in Yosemite that accessible to summit. The mountain is named in honor of James Dwight Dana, who was a professor of natural history and geology at Yale. Mount Dana is composed of prebatholithic rock that is mostly reddish metamorphic rock, which was composed by metavolcanics of surfacing magma from the Mesozoic Era. Mount Dana's northern face includes a small, receding glacier known as the Dana Glacier. The Dana Meadows lie at the foot of the mountain. From the top, lakes throughout Dana Meadows, Mono Lake, Tioga Peak and many other mountains are in view. Hike From the Tioga Pass Road there are many easy r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gaylor Peak
Gaylor Peak is an 11,004-foot (3,354-meter) mountain summit located on the crest of the Sierra Nevada mountain range in northern California, United States. The peak is positioned on the boundary between Yosemite National Park and the Inyo National Forest, and it also lies on the border between Mono County, California, Mono County and Tuolumne County, California, Tuolumne County. The peak rises prominently above Tioga Pass and Tioga Lake, with a notable topographic relief, as the summit stands approximately above the lake within a distance of . Gaylor Peak is a popular hiking destination, particularly during the summer months, due to its accessibility. Hikers can reach the summit via the Gaylor Lakes Trail, a two-mile route that begins at California State Route 120, State Route 120, which runs along the eastern base of the peak.Marc J. Soares (2003), ''100 Hikes in Yosemite National Park'', Mountaineers Books, , p. 170 The peak's geological composition consists of metamorphic roc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Dwight Dana
James Dwight Dana Royal Society of London, FRS FRSE (February 12, 1813 – April 14, 1895) was an American geologist, mineralogist, volcanologist, and zoologist. He made pioneering studies of mountain-building, volcano, volcanic activity, and the origin and structure of continents and oceans around the world. His zoological author abbreviation is Dana. Early life and career Dana was born February 12, 1813, in Utica, New York. His father was merchant James Dana (1780–1860) and his mother was Harriet Dwight (1792–1870). Through his mother he was related to the Dwight New England family of missionaries and educators including uncle Harrison Gray Otis Dwight and first cousin Henry Otis Dwight. He showed an early interest in science, which had been fostered by Fay Edgerton, a teacher in the Utica high school, and in 1830 he entered Yale College in order to study under Benjamin Silliman the elder. Graduating in 1833, for the next two years he was teacher of mathematics to midshi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tree Line
The tree line is the edge of a habitat at which trees are capable of growing and beyond which they are not. It is found at high elevations and high latitudes. Beyond the tree line, trees cannot tolerate the environmental conditions (usually low temperatures, extreme snowpack, or associated lack of available moisture). The tree line is sometimes distinguished from a lower timberline, which is the line below which trees form a forest with a closed Canopy (biology), canopy. At the tree line, tree growth is often sparse, stunted, and deformed by wind and cold. This is sometimes known as (German for "crooked wood"). The tree line often appears well-defined, but it can be a more gradual transition. Trees grow shorter and often at lower densities as they approach the tree line, above which they are unable to grow at all. Given a certain latitude, the tree line is approximately 300 to 1000 meters below the permanent snow line and roughly parallel to it. Causes Due to their vertical s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tioga Peak
Tioga Peak is located in Mono County, California, approximately two miles outside of Yosemite National Park. It is situated in the Hoover Wilderness on land managed by Inyo National Forest. The location of Tioga Peak Tioga Peak is three miles north-northeast of Tioga Pass, at the head of Lee Vining Canyon. Highway 120 traverses its south and east slopes. It is easily accessible, a to class 2 scramble, from Gardisky Lake. The summit is like a rolling dome. It has some of the best views of the Tioga Pass region. Both Mount Dana and Tioga Pass are visible from the summit. Tioga Peak is a rounded peak, made of metamorphic rock. Climate Tioga Peak is located in an alpine climate zone. Most weather fronts originate in the Pacific Ocean, and travel east toward the Sierra Nevada mountains. As fronts approach, they are forced upward by the peaks (orographic lift), causing moisture in the form of rain or snowfall to drop onto the range. Precipitation runoff from this mountain dra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mono Lake
Mono Lake ( ) is a Salt lake, saline soda lake in Mono County, California, formed at least 760,000 years ago as a terminal lake in an endorheic basin. The lack of an outlet causes Hypersaline lake, high levels of salts to accumulate in the lake which make its water alkalinity, alkaline. The desert lake has an unusually productive ecosystem based on brine shrimp, which thrive in its waters, and provides critical habitat for two million annual migratory birds that feed on the shrimp and alkali flies (''Ephydra hians''). Historically, the native Kucadikadi, Kutzadika'a people ate the alkali flies' pupae, which live in the shallow waters around the edge of the lake. When the city of Los Angeles diverted water from the freshwater streams flowing into the lake, it lowered the lake level, which imperiled the Bird migration, migratory birds. The Mono Lake Committee formed in response and won a legal battle that forced Los Angeles to partially replenish the lake level. Geology Mono Lake ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dana Meadows (California)
The Dana Meadows can be found at the eastern entrance to Yosemite National Park, at the foot of Mount Dana, not far from Tuolumne Meadows and the Tioga Pass entrance station. Description The Dana Fork of the Tuolumne River originates adjacent to the meadows, and flows west through them towards its junction with the Lyell Fork of the Tuolumne River. At an altitude of 9,728 feet (2,965 m), the meadow can be covered in snow up to 162 inches (411 cm) deep in wintertime. In June or July, it is springtime in these meadows, but snow can come at any time, especially after 1 September. Before Yosemite became a park, Basque sheepherders would graze their flocks here, and in other areas of the Sierra Nevada. Often lonely, they would carve their initials into the trees of the meadow, several of which are still visible. (In hunting season, some animals of the Sierra, such as the deer, have learned to migrate into the park.) The meadows are named for James Dwight Dana ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dana Glacier (California)
The Dana Glacier is located inside a northwest facing cirque located east of the 13,061 feet (3,981 m) Mount Dana on the eastern border of Yosemite National Park, California. It is very close to Tioga Pass and Highway 120. The glacier occupies the very steep, shaded western slope of the cirque at around 11,500 to 11,800 feet (3,500–3,600 m), although a part of it reaches up to 12,500 feet (3,800 m) (Dana Couloir).Google Earth elevation for GNIS coordinates. Repeat photography comparing images taken in 1883 with those from 2004 demonstrate that the glacier has retreated substantially in that period. 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 ... Cited references Glaciers of California Glaciers of Mono Coun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesozoic Era
The Mesozoic Era is the era of Earth's geological history, lasting from about , comprising the Triassic, Jurassic and Cretaceous Periods. It is characterized by the dominance of archosaurian reptiles such as the dinosaurs, and of gymnosperms such as cycads, ginkgoaceae and araucarian conifers; a hot greenhouse climate; and the tectonic break-up of Pangaea. The Mesozoic is the middle of the three eras since complex life evolved: the Paleozoic, the Mesozoic, and the Cenozoic. The era began in the wake of the Permian–Triassic extinction event, the largest mass extinction in Earth's history, and ended with the Cretaceous–Paleogene extinction event, another mass extinction whose victims included the non-avian dinosaurs, pterosaurs, mosasaurs, and plesiosaurs. The Mesozoic was a time of significant tectonic, climatic, and evolutionary activity. The supercontinent Pangaea began to break apart into separate landmasses. The climate of the Mesozoic was varied, alternating bet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metamorphic Rock
Metamorphic rocks arise from the transformation of existing rock to new types of rock in a process called metamorphism. The original rock ( protolith) is subjected to temperatures greater than and, often, elevated pressure of or more, causing profound physical or chemical changes. During this process, the rock remains mostly in the solid state, but gradually recrystallizes to a new texture or mineral composition. The protolith may be an igneous, sedimentary, or existing metamorphic rock. Metamorphic rocks make up a large part of the Earth's crust and form 12% of the Earth's land surface. They are classified by their protolith, their chemical and mineral makeup, and their texture. They may be formed simply by being deeply buried beneath the Earth's surface, where they are subject to high temperatures and the great pressure of the rock layers above. They can also form from tectonic processes such as continental collisions, which cause horizontal pressure, friction, and dist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Batholith
A batholith () is a large mass of intrusive rock, intrusive igneous rock (also called plutonic rock), larger than in area, that forms from cooled magma deep in the Earth's crust. Batholiths are almost always made mostly of felsic or intermediate composition, intermediate rock types, such as granite, quartz monzonite, or diorite (see also ''granite dome''). Formation Although they may appear uniform, batholiths are in fact structures with complex histories and compositions. They are composed of multiple masses, or ''plutons'', bodies of igneous rock of irregular dimensions (typically at least several kilometers) that can be distinguished from adjacent igneous rock by some combination of criteria including age, composition, texture, or mappable structures. Individual plutons are solidified from magma that traveled toward the surface from a zone of partial melting near the base of the Earth's crust. Traditionally, these plutons have been considered to form by ascent of relative ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wilderness Press
Wilderness Press is a publisher of outdoor guidebooks and maps that was founded in Berkeley, California in 1967. Its first publication was ''Sierra North'' (1967/2005). Reissued in 2005, this is considered the authoritative guidebook for hikers and backpackers in the Northern Sierra Nevada. Since the debut of ''Sierra North'' in 1967, Wilderness Press has become well known for its outdoor titles, guidebooks, and maps. It has been owned by Keen Communications since 2008, and headquarters have moved to Birmingham, Alabama Birmingham ( ) is a city in the north central region of Alabama, United States. It is the county seat of Jefferson County, Alabama, Jefferson County. The population was 200,733 at the 2020 United States census, 2020 census, making it the List .... Select bibliography *'' Walking Brooklyn'' References External links * Book publishing companies based in Berkeley, California Map publishing companies Publishing companies established in 1967 Mass media ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
