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Fan Mountain
Fan Mountain, 'el. is a prominent peak in the Madison Range in Madison County, Montana in the Beaverhead National Forest. The peak is located along the western face of the Madison Range at the northern end of the range. It is due east of Ennis Lake and its prominence and isolation makes it easy to distinguish from Ennis in the Madison River valley. Jack and Cedar creeks are tributaries of the Madison River with headwaters on the eastern and western face of Fan Mountain. The mountain straddles the northern boundary of the Spanish Peaks parcel of the Lee Metcalf Wilderness area. Geology Fan Mountain is a laccolith, a volcanic landform that is formed when magma pushes to the surface but does not flow out. It is similar to the nearby Lone Mountain, another laccolith that was formed the same way. See also *Mountains of Madison County, Montana A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Alth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madison County, Montana
Madison County is a County (United States), county in the U.S. state of Montana. As of the 2020 United States census, 2020 census, the population was 8,623. Its county seat is Virginia City, Montana, Virginia City. The county was founded in 1865; at the time it was part of the Montana Territory. Geography According to the United States Census Bureau, the county has an area of , of which is land and (0.4%) is water. Major highways * Interstate 15 in Montana, Interstate 15 * Former U.S. Highway 91 * U.S. Route 287#Montana, U.S. Highway 287 * Montana Highway 41 * Montana Highway 84 * Montana Highway 87 * Montana Highway 55 * Montana Highway 287 Adjacent counties * Beaverhead County, Montana, Beaverhead County - southwest * Silver Bow County, Montana, Silver Bow County - northwest * Jefferson County, Montana, Jefferson County - north * Gallatin County, Montana, Gallatin County - east * Fremont County, Idaho - south National protected areas * Beaverhead National Fores ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lee Metcalf Wilderness
The Lee Metcalf Wilderness is located in the northern Rocky Mountains in the U.S. state of Montana. Created by an act of Congress in 1983, this rugged alpine wilderness is divided into four separated parcels typified by complex mountain topography: Bear Trap Canyon unit, Spanish Peaks unit, Taylor-Hilgard unit, and Monument Mountains unit. The Bear Trap Canyon unit was the first designated wilderness area to be managed by the Bureau of Land Management (an agency within the Department of the Interior), and comprises a region of canyonlands adjacent to the Madison River. The other three sections of the wilderness are jointly managed by Beaverhead-Deerlodge and Gallatin National Forests, both of which are a part of the Department of Agriculture. The wilderness was named after the late Montana congressman Lee Metcalf. The portion of the wilderness within Gallatin National Forest is also within the Greater Yellowstone Ecosystem and borders Yellowstone National Park. U.S. wilderne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountains Of Montana
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountains Of Madison County, Montana
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Mountains In Madison County, Montana
There are at least 126 named mountains in Madison County, Montana. * A P A Mountain, , el. * Bald Mountain, location unknown, el. * Baldy Mountain, , el. * Beaverhead Rock, , el. * Bell Peak, , el. * Big Horn Mountain, , el. * Big Mountain, , el. * Big Sheep Mountain, , el. * Black Butte, , el. * Black Mountain, , el. * Blaze Mountain, , el. * Block Mountain, , el. * Branham Peaks, , el. * Brownback Mountain, , el. * Bucks Nest, , el. * Bulldog Mountain, , el. * Cascade Mountain, , el. * Cave Mountain, , el. * Cedar Mountain, , el. * Circle Mountain, , el. * Cloudrest Peak, , el. * Copper Mountain, , el. * Dead Mountain, , el. * Divide Peakl, , el. * Dougherty Butte, , el. * Dry Lake Mountains, , el. * Dutchman Peak, , el. * East Butte, , el. * Echo Peak, , el. * Elk Mountain, , el. * Fan Mountain, , el. * Finger Mountain, , el. * Flatiron Mountain, , el. * Flatiron Mountain, , el. * Flattop Mountain, , el. * Fossil Peak, , el. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lone Mountain (Montana)
Lone Mountain () is in the Madison Range in the U.S. state of Montana. The summit is located in Lee Metcalf Wilderness within Gallatin and Beaverhead-Deerlodge National Forests. Lone Mountain is north of Koch Peak. Recreation The east, north, and southern slopes of Lone Peak are occupied by Big Sky Resort. References Mountains of Madison County, Montana Mountains of Montana {{madisonCountyMT-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magma
Magma () is the molten or semi-molten natural material from which all igneous rocks are formed. Magma is found beneath the surface of the Earth, and evidence of magmatism has also been discovered on other terrestrial planets and some natural satellites. Besides molten rock, magma may also contain suspended crystals and gas bubbles. Magma is produced by melting of the mantle or the crust in various tectonic settings, which on Earth include subduction zones, continental rift zones, mid-ocean ridges and hotspots. Mantle and crustal melts migrate upwards through the crust where they are thought to be stored in magma chambers or trans-crustal crystal-rich mush zones. During magma's storage in the crust, its composition may be modified by fractional crystallization, contamination with crustal melts, magma mixing, and degassing. Following its ascent through the crust, magma may feed a volcano and be extruded as lava, or it may solidify underground to form an intrusion, such as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcano
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and most are found underwater. For example, a mid-ocean ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent tectonic plates whereas the Pacific Ring of Fire has volcanoes caused by convergent tectonic plates. Volcanoes can also form where there is stretching and thinning of the crust's plates, such as in the East African Rift and the Wells Gray-Clearwater volcanic field and Rio Grande rift in North America. Volcanism away from plate boundaries has been postulated to arise from upwelling diapirs from the core–mantle boundary, deep in the Earth. This results in hotspot volcanism, of which the Hawaiian hotspot is an example. Volcanoes are usually not created where two tectonic plates slide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laccolith
A laccolith is a body of intrusive rock with a dome-shaped upper surface and a level base, fed by a conduit from below. A laccolith forms when magma (molten rock) rising through the Earth's crust begins to spread out horizontally, prying apart the host rock strata. The pressure of the magma is high enough that the overlying strata are forced upward, giving the laccolith its dome-like form. Over time, erosion can expose the solidified laccolith, which is typically more resistant to weathering than the host rock. The exposed laccolith then forms a hill or mountain. The Henry Mountains of Utah, US, are an example of a mountain range composed of exposed laccoliths. It was here that geologist Grove Karl Gilbert carried out pioneering field work on this type of intrusion. Laccolith mountains have since been identified in many other parts of the world. Description A laccolith is a type of igneous intrusion, formed when magma forces its way upwards through the Earth's crust b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madison River
The Madison River is a headwater tributary of the Missouri River, approximately 183 miles (295 km) long, in Wyoming and Montana. Its confluence with the Jefferson and Gallatin rivers near Three Forks, Montana forms the Missouri River. The Madison rises in Teton County in northwestern Wyoming at the confluence of the Firehole and Gibbon rivers, a location in Yellowstone National Park called ''Madison Junction''. It first flows west, then north through the mountains of southwestern Montana to join the Jefferson and the Gallatin rivers at Three Forks. The Missouri River Headwaters State Park is located on the Madison at Three Forks. In its upper reaches in Gallatin County, Montana, the Hebgen Dam forms Hebgen Lake. In its middle reaches in Madison County, Montana, the Madison Dam forms Ennis Lake and provides hydroelectric power. In 1959, the 1959 Hebgen Lake earthquake formed Quake Lake just downstream from Hebgen Dam. Downstream from Ennis, the Madison flows through Bear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ennis, Montana
Ennis is a town in Madison County, Montana, United States, in the southwestern part of the state. The population was 917 at the 2020 census. U.S. Route 287 runs through town, following the Madison River as it descends from the town of West Yellowstone. History In 1863, gold was discovered in Alder Gulch. This brought on "the rush." Two months later, William Ennis homesteaded the site along the Madison River that was soon to become the town of Ennis, his namesake. In 1886, a mystery creature was noted for making livestock kills in the Madison Valley. A local rancher, Israel Ammon Hutchins, finally shot and killed the beast, after accidentally shooting one of his cattle, which was on the other side of some brush. A local taxidermist stuffed the canine. Jack Kirby (Hutchins' Grandson) tracked the mount to a Museum in Pocatello, Idaho, ''circa'' 2007. Avid Aircraft, a manufacturer of homebuilt aircraft, was located in Ennis. The company ceased operations in 2003. The 2003 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
