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Sphinx Mountain (Madison County, Montana)
Sphinx Mountain, el. is a prominent mountain peak on the western face of the Madison Range in Madison County, Montana. The peak is located in the Beaverhead National Forest and Taylor Hilgard parcel of the Lee Metcalf Wilderness area. Its prominence and isolation makes it easy to distinguish from Ennis in the Madison River valley. Bear and Indian creeks are tributaries of the Madison River with headwaters on the eastern and northern face of Sphinx Mountain. Ascents The first recorded ascent was on July 30, 1913, by Anton W. Asmuth, George Belchic, Stanley H. Wardwell, and someone named Kimball who were students from the Harvard Summer School of Geology. A second recorded ascent was made on August 1, 1919 by R. B. Hevy, John H. Hall Jr., Robert E. Crosby, and Henry J. Hall Jr., also Harvard students. Sphinx Mountain may have been ascended during the 1880s and 1890s by geologists Frank Tweedy, Edward Douglas and or Albert C. Peale during their topographic surveys of the Three F ... [...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] |
Madison Range
The Madison Range is a mountain range located in the Rocky Mountains of Montana and Idaho in the United States. The range was named in honor of future President of the United States, then U.S. Secretary of State James Madison by Meriwether Lewis as the Lewis and Clark Expedition travelled through Montana in 1805. The range extends from West Yellowstone, Montana to Bozeman, Montana and is flanked by the Madison River on the west and the Gallatin River to the east. The highest point in the range is Hilgard Peak at , a remote peak that wasn't climbed until 1948. The Madison Range is the westernmost section of what is collectively referred to as the Greater Yellowstone Ecosystem. Most of the range lies within Beaverhead-Deerlodge and Gallatin National Forests. A small portion of the range has been further protected with the creation of the Lee Metcalf Wilderness. The region has grizzly and black bears and at least one pack of wolves. Most other larger mammal species native to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Peak
A summit is a point on a surface that is higher in elevation than all points immediately adjacent to it. The topographic terms acme, apex, peak (mountain peak), and zenith are synonymous. The term (mountain top) is generally used only for a mountain peak that is located at some distance from the nearest point of higher elevation. For example, a big, massive rock next to the main summit of a mountain is not considered a summit. Summits near a higher peak, with some prominence or isolation, but not reaching a certain cutoff value for the quantities, are often considered ''subsummits'' (or ''subpeaks'') of the higher peak, and are considered part of the same mountain. A pyramidal peak is an exaggerated form produced by ice erosion of a mountain top. Summit may also refer to the highest point along a line, trail, or route. The highest summit in the world is Mount Everest with a height of above sea level. The first official ascent was made by Tenzing Norgay and Sir Edmund Hillary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beaverhead National Forest
Beaverhead County is the largest county by area in the U.S. state of Montana. As of the 2020 census, the population was 9,371. Its county seat is Dillon. The county was founded in 1865. Much of the perimeter of the county is the Continental Divide, including its entire border with the state of Idaho. The divide heads east into Montana at the county border with Ravalli County, between Lost Trail Pass and Chief Joseph Pass. History The county name is derived from a rock formation, which the Shoshone described as being shaped like a beaver's head. The original county seat was the gold-mining town of Bannack. In 1881 it was moved to Dillon. Geography According to the United States Census Bureau, the county has a total area of , of which is land and (0.3%) is water. It is the largest county in Montana by area. Beaverhead impact structure is in the area. The Big Hole River (formerly called Wisdom River) runs through the county. Adjacent counties * Ravalli County - northwest * ... [...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] |
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] |
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] |
USGS Map With Sphinx Conglomerate Annotated
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundred ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene
The Eocene ( ) Epoch is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', "dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope Carbon-13, 13C in the atmosphere was exceptionally low in comparison with the more common isotope Carbon-12, 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Popigai impact structure, Siberia and in what is now ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Livingston Formation
The Livingston Group is a geological Formation (geology), formation in Montana whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, North America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 574-588. . There are four units of the Livingston Group (from oldest to youngest): Cokedale Formation, Miner Creek Formation, Billman Creek Formation, and Hoppers Formation.Skipp, Betty and McGrew, L.W., 1972, The Upper Cretaceous Livingston Group of the western Crazy Mountains Basin, Montana, in Balster, C., Lynn, J., and Warne, J., eds., Crazy Mountains Basin: Montana Geological Society 21st Annual Geological Conference Guidebook, p. 99-106. See also * List of dinosaur-bearing rock formations References Cretaceous Montana Paleogene Mon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Cretaceous
The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''creta'', the Latin word for the white limestone known as chalk. The chalk of northern France and the white cliffs of south-eastern England date from the Cretaceous Period. Climate During the Late Cretaceous, the climate was warmer than present, although throughout the period a cooling trend is evident. The tropics became restricted to equatorial regions and northern latitudes experienced markedly more seasonal climatic conditions. Geography Due to plate tectonics, the Americas were gradually moving westward, causing the Atlantic Ocean to expand. The Western Interior Seaway divided North America into eastern and western halves; Appalachia and Laramidia. India maintained a northward course towards Asia. In the Southern Hemisphere, Australia and Ant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Helmet (mountain)
The Helmet is a mountain peak in the Madison Range in Madison County, Montana, in the United States. The peak is located in the Beaverhead National Forest and Taylor Hilgard parcel of the Lee Metcalf Wilderness area. Its prominence, isolation and proximity to Sphinx Mountain makes it easy to distinguish from Ennis in the Madison River valley. The name is descriptive, as the peak is said to look like a helmet A helmet is a form of protective gear worn to protect the head. More specifically, a helmet complements the skull in protecting the human brain. Ceremonial or symbolic helmets (e.g., a policeman's helmet in the United Kingdom) without protect .... Notes Mountains of Madison County, Montana Mountains of Montana {{MadisonCountyMT-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
