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Stanislaus Peak
Stanislaus Peak is a prominent peak near Sonora Pass in the Sierra Nevada range in California, United States. It is located in the Carson–Iceberg Wilderness in the federally-managed Stanislaus National Forest. Geology Stanislaus peak is an ancient volcanic cone composed of andesite intrusion. Near the base of the mountain is a granite outcropping formed during the Late Triassic to Late Cretaceous periods. The granite features are also found in nearby areas, such as Yosemite National Park and the Emigrant Wilderness The Emigrant Wilderness of Stanislaus National Forest is a wilderness area in the Sierra Nevada. It is bordered by Yosemite National Park on the south, the Toiyabe National Forest and the Hoover Wilderness on the east, and State Route 108 .... Hiking The peak can be hiked via the trail from Saint Mary's Pass near Sonora Pass. The trail ends at the granite outcropping just below the peak and route finding and a class 2 scramble is required to reach the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sierra Nevada (U
The Sierra Nevada () is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies primarily in Nevada. The Sierra Nevada is part of the American Cordillera, an almost continuous chain of mountain ranges that forms the western "backbone" of the Americas. The Sierra runs north-south and its width ranges from to across east–west. Notable features include General Sherman, the largest tree in the world by volume; Lake Tahoe, the largest alpine lake in North America; Mount Whitney at , the highest point in the contiguous United States; and Yosemite Valley sculpted by glaciers from one-hundred-million-year-old granite, containing high waterfalls. The Sierra is home to three national parks, twenty wilderness areas, and two national monuments. These areas include Yosemite, Sequoia, and Kings Canyon National Parks; and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andesite
Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predominantly of sodium-rich plagioclase plus pyroxene or hornblende. Andesite is the extrusive equivalent of plutonic diorite. Characteristic of subduction zones, andesite represents the dominant rock type in island arcs. The average composition of the continental crust is andesitic. Along with basalts, andesites are a component of the Geology of Mars, Martian crust. The name ''andesite'' is derived from the Andes mountain range, where this rock type is found in abundance. It was first applied by Christian Leopold von Buch in 1826. Description Andesite is an aphanitic (fine-grained) igneous rock that is intermediate in its content of silica and low in alkali metals. It has less than 20% quartz and 10% feldspathoid by volume, with at least 6 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountains Of Northern California
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher than a hill, typically rising at least 300 metres (1,000 feet) above the surrounding land. A few mountains are isolated summits, but most occur in mountain ranges. Mountains are formed through tectonic forces, erosion, or volcanism, which act on time scales of up to tens of millions of years. Once mountain building ceases, mountains are slowly leveled through the action of weathering, through slumping and other forms of mass wasting, as well as through erosion by rivers and glaciers. High elevations on mountains produce colder climates than at sea level at similar latitude. These colder climates strongly affect the ecosystems of mountains: different elevations have different plants and animals. Because of the less hospitable terrain and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Scramble To The Summit Of Stanislaus Peak In California
''The'' () is a grammatical article in English, denoting persons or things that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The'' is the most frequently used word in the English language; studies and analyses of texts have found it to account for seven percent of all printed English-language words. It is derived from gendered articles in Old English which combined in Middle English and now has a single form used with nouns of any gender. The word can be used with both singular and plural nouns, and with a noun that starts with any letter. This is different from many other languages, which have different forms of the definite article for different genders or numbers. Pronunciation In most dialects, "the" is pronounced as (with the voiced dental fricative followed by a schwa) when followed by a consonant sound, and as (homophone of the archaic pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emigrant Wilderness
The Emigrant Wilderness of Stanislaus National Forest is a wilderness area in the Sierra Nevada. It is bordered by Yosemite National Park on the south, the Toiyabe National Forest and the Hoover Wilderness on the east, and State Route 108 over Sonora Pass on the north. It is an elongated area that extends northeast about in length and up to in width. Watersheds drain to the Stanislaus and Tuolumne Rivers. This area is entirely within Tuolumne County, California and is approximately east of San Francisco, California and south of Lake Tahoe. The Emigrant Wilderness is a glaciated landscape of scenic beauty. The northeastern third of the Wilderness is dominated by volcanic ridges and peaks; the remaining areas consist of many sparsely vegetated, granitic ridges interspersed with numerous lakes and meadows. Elevations range from below near Cherry Reservoir to at Leavitt Peak, but the elevation range of most of the popular areas is . Precipitation averages annually, 80% of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yosemite National Park
Yosemite National Park ( ) is an American national park in California, surrounded 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 an area of and sits in four countiescentered in Tuolumne and Mariposa, extending north and east to Mono and south to Madera County. Designated a World Heritage Site in 1984, Yosemite is internationally recognized for its granite cliffs, waterfalls, clear streams, giant sequoia groves, lakes, mountains, meadows, glaciers, and biological diversity. Almost 95 percent of the park is designated wilderness. Yosemite is one of the largest and least fragmented habitat blocks in the Sierra Nevada, and the park supports a diversity of plants and animals. The geology of the Yosemite area is characterized by granite rocks and remnants of older rock. About 10 million years ago, the Sierra Nevada was uplifted and tilted to form its unique s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Granite
Granite () is a coarse-grained ( phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground. It is common in the continental crust of Earth, where it is found in igneous intrusions. These range in size from dikes only a few centimeters across to batholiths exposed over hundreds of square kilometers. Granite is typical of a larger family of ''granitic rocks'', or '' granitoids'', that are composed mostly of coarse-grained quartz and feldspars in varying proportions. These rocks are classified by the relative percentages of quartz, alkali feldspar, and plagioclase (the QAPF classification), with true granite representing granitic rocks rich in quartz and alkali feldspar. Most granitic rocks also contain mica or amphibole minerals, though a few (known as leucogranites) contain almost no dark minerals. Granite is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geological Society Of America
The Geological Society of America (GSA) is a nonprofit organization dedicated to the advancement of the geosciences. History The society was founded in Ithaca, New York, in 1888 by Alexander Winchell, John J. Stevenson, Charles H. Hitchcock, John R. Procter and Edward Orton and has been headquartered at 3300 Penrose Place, Boulder, Colorado, US, since 1967. GSA began with 100 members under its first president, James Hall. In 1889 Mary Emilie Holmes became its first female member. It grew slowly but steadily to 600 members until 1931, when a nearly $4 million endowment from 1930 president R. A. F. Penrose Jr. jumpstarted GSA's growth. As of December 2017, GSA had more than 25,000 members in over 100 countries. The society has six regional sections in North America, three interdisciplinary interest groups, and eighteen specialty divisions. Activities The stated mission of GSA is "to advance geoscience research and discovery, service to society, stewardship of Earth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Cone
Volcanic cones are among the simplest volcanic landforms. They are built by ejecta from a volcanic vent, piling up around the vent in the shape of a cone with a central crater. Volcanic cones are of different types, depending upon the nature and size of the fragments ejected during the eruption. Types of volcanic cones include stratocones, spatter cones, tuff cones, and cinder cones. Stratocone Stratocones are large cone-shaped volcanoes made up of lava flows, explosively erupted pyroclastic rocks, and igneous intrusives that are typically centered around a cylindrical vent. Unlike shield volcanoes, they are characterized by a steep profile and periodic, often alternating, explosive eruptions and effusive eruptions. Some have collapsed craters called calderas. The central core of a stratocone is commonly dominated by a central core of intrusive rocks that range from around to over several kilometers in diameter. This central core is surrounded by multiple generatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Mountains Of California
This list includes significant summit (topography), mountain peaks and summit (topography), high points located in the United States arranged alphabetically by U.S. state, state, District of Columbia, district, or Territories of the United States, territory. The highest peak or point in each state, district or territory is noted in bold. Significant mountain peaks and high points Alabama *Brindley Mountain *Cheaha Mountain, highest summit in the Alabama, State of Alabama *Monte Sano Mountain *Capshaw Mountain *Dirtseller Mountain *Frog Mountain *Hawk Pride Mountain *Gunters Mountain *Sand Mountain (Alabama) *Keel Mountain (Alabama) *Halama Mountain Alaska * Afognak Mountain, summit of Afognak Island * Amak Volcano, active stratovolcano * Amherst Peak * Amulet Peak * Andy Simons Mountain * Annex Peak * Anvil Peak , active stratovolcano that forms the summit of Semisopochnoi Island * Arthur Peak * Asses Ears (Alaska) * Atna Peaks * Atuk Mountain , summit of St. L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stanislaus National Forest
Stanislaus National Forest is a U.S. National Forest which manages of land in four counties in the Sierra Nevada in Northern California. It was established on February 22, 1897, making it one of the oldest national forests. It was named after the Stanislaus River. Geography The forest is located primarily in eastern Tuolumne County, adjacent to the northwestern part of Yosemite National Park, but parts of it extend (in descending order of forestland area) into Southern Alpine County, Northern Mariposa County and Eastern Calaveras County. Forest headquarters are located in Sonora, California. There are local ranger district offices in Groveland, Hathaway Pines, and Pinecrest. The Emigrant Wilderness is located entirely within its boundaries. Portions of the Carson-Iceberg Wilderness, including the Dardanelles Cone, and the Mokelumne Wilderness are also within the Stanislaus National Forest. Features It contains 78 lakes and of rivers and streams. It has of non- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carson–Iceberg Wilderness
The Carson–Iceberg Wilderness is a federal wilderness area located northeast of Stockton, California. It encompasses and was designated by the California Wilderness Act of 1984. It protects an area of High Sierra landscape with elevations from to along the Sierra Mountains from Ebbetts Pass to Sonora Pass in the south. The US Forest Service manages the wilderness which is in both the Stanislaus National Forest and the Humboldt–Toiyabe National Forest. Located in the wilderness are the headwaters of the Carson River draining the east side of the crest, as well as the North and Middle Forks of the Stanislaus River on the west slopes. The name Carson–Iceberg comes from two prominent geographical features: the Carson River (named for noted scout and explorer Kit Carson) and the distinctive granite formation called "The Iceberg" on the southern boundary near Clark Fork Road. Historical highlights: Jedediah Smith crossed the Sierra Nevada Range near Ebbetts Pass sometime i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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