Wheeler Peak (Nevada)
Wheeler Peak is the tallest mountain in the Snake Range and in White Pine County, in Nevada, United States. The summit elevation of 13,065 feet makes it the second-highest peak in Nevada, just behind Boundary Peak. With a topographic prominence of 7,563 feet, Wheeler Peak is the most topographically prominent peak in White Pine County and the second-most prominent peak in Nevada, just behind Mount Charleston; the mountain is located in Great Basin National Park and was named for George Wheeler, leader of the Wheeler Survey of the late 19th century. Wheeler Peak has an impressive headwall above a large glacial cirque, large moraines and an active rock glacier; the top of the mountain is covered by deep snow most of the year. A paved road runs from the Great Basin National Park visitor center to several small camping areas, the highest more than halfway up the mountain; the mountain's prominence is due to a Miocene detachment fault that brought the deep Cambrian Prospect Mountain quartzite to the top of the mountain.
Jeff Davis Peak stands about one mile to the east of Wheeler and reaches 12,777 feet A well-maintained trail, the Wheeler Peak Summit Trail, leads from a trail-head near the end of Wheeler Peak Scenic Drive directly to the summit, making for a class 1 hike. Afternoon storms are during the summer; the distinction of highest point in Nevada goes to the summit of Boundary Peak, so named because it is just east of the Nevada-California border, at the northern terminus of the White Mountains. Wheeler Peak is, the tallest independent mountain in the state since Boundary Peak is considered a subsidiary summit of Montgomery Peak, whose summit is in California; the topographic prominence of Boundary Peak is 253 feet, which falls under the used 300-foot cutoff for an independent peak. Boundary Peak is less than 1 mile away from its higher neighbor, while Wheeler Peak is over 230 miles from the nearest higher peak. By contrast the prominence of Wheeler Peak, at 7,563 feet, is the twelfth largest in the contiguous United States.
It is the twelfth most topographically isolated summit in the contiguous United States. The limestone Lehman Caves, at the base of the mountain, feature a large collection of shield formations. Tours of the caves are offered year round by the National Park Service. Higher up on the glacial moraine is a grove of ancient Great Basin Bristlecone Pines of great age. A Bristlecone Pine named Prometheus, at least 4,862 years old and the oldest known non-clonal organism, grew here before it was inadvertently cut down in 1964 as part of a research project. Limber Pine, which can live for over 1,000 years, are found in the area. List of Ultras of the United States List of highest points in Nevada by county "Wheeler Peak". Geographic Names Information System. United States Geological Survey. Retrieved 2008-11-27. "Wheeler Peak". Great Basin National Park. National Park Service. Retrieved 2010-10-16
Mount Blackburn is the highest peak in the Wrangell Mountains of Alaska in the United States. It is the twelfth-highest peak in North America; the mountain is an old, eroded shield volcano, the second-highest volcano in the U. S. behind Mount Bona and the fifth-highest in North America. It was named in 1885 by Lt. Henry T. Allen of the U. S. Army after Joseph Clay Stiles Blackburn, a U. S. senator from Kentucky. It is located in the heart of Wrangell – St. Elias National Park, the largest national park in the country; the mountain's massif is covered entirely by icefields and glaciers, is the principal source of ice for the Kennicott Glacier, which flows southeast over 20 miles to just above the town of McCarthy. The mountain contributes a large volume of ice to the north-flowing Nabesna Glacier and the Kuskulana Glacier system. Mount Blackburn is a large, dramatic peak, with great local relief and independence from higher peaks, its west face drops over 11,000 ft to the Kuskulana Glacier in less than 4 horizontal miles.
Its other faces drop 8,000–10,000 ft, all in less than 8 miles. The toe of the Kuskulana Glacier, less than 12 miles from the summit, lies at an elevation of 2,400 ft, giving a rise of 14,000 ft. While these figures speak to the peak's relief, one measure of its independence is that it is the 50th-most topographically prominent peak in the world; the western of Blackburn's two summits is the mountain's highest point, a fact, not understood until the 1960s when new USGS maps were published. The first ascent of the west peak, hence Mount Blackburn, was done on May 30, 1958, by Bruce Gilbert, Dick Wahlstrom, Hans Gmoser, Adolf Bitterlich, Leon Blumer via the North Ridge; this team made the first ascent of Blackburn, but did not know it at the time due to the incorrect identification of the highest point. In fact, Blumer's article in the 1959 American Alpine Journal is titled "Mount Blackburn – Second Ascent." Kennedy Peak, or East Blackburn, 16,286 ft, is the eastern summit and was thought to be the highest point.
The first ascent of this summit was made in 1912 by Dora Keen and George Handy via the Kennicott Glacier and East Face. This heady exploit was ahead of its time. Dora Keen, driven by a deep desire for the climb, solicited miners from the nearby Kennecott Copper Mines, forged a route up the crevassed East Face to the East Peak, but did not traverse over to the West Peak. Keen went on to write a famous article for the Saturday Evening Post titled, "First up Mount Blackburn." In 1912, Keen and Handy thought. Mount Blackburn represents the eroded core of a shield volcano; because it is shrouded in permanent ice, its internal structure cannot be determined. It is believed to have a summit caldera modified by glaciation; the oldest rocks in the area are granites, about 4.2 million years old, representing an intrusive mass. The majority of the mountain is 3.4 million year old granite. From this it is inferred that a caldera collapse took place between 4.2 and 3.4 million years ago, after which activity ceased.
Today's standard route on the peak is the 1958 ascent route, the North Ridge, approached from the Nabesna Glacier, on the north side of the mountain, opposite from Keen and Hardy's route. The route starts from an airstrip on the glacier at an altitude of 7,200 feet, it is a moderate climb by Alaskan standards. List of mountain peaks of North America List of mountain peaks of the United States List of mountain peaks of Alaska List of the highest major summits of the United States List of the most prominent summits of the United States List of the most isolated major summits of the United States List of volcanoes in the United States Wood, Michael. Alaska: A Climbing Guide. Mountaineers Books. ISBN 0-89886-724-X. Richter, Donald H.. Guide to the Volcanoes of the Western Wrangell Mountains, Alaska. USGS Bulletin 2072. Winkler, Gary R.. A Geologic Guide to Wrangell—Saint Elias National Park and Preserve, Alaska: A Tectonic Collage of Northbound Terranes. USGS Professional Paper 1616. ISBN 0-607-92676-7.
Richter, Donald H.. Geologic Map of the Wrangell-Saint Elias National Park and Preserve, Alaska. USGS Scientific Investigations Map 2877
A mountain range or hill range is a series of mountains or hills ranged in a line and connected by high ground. A mountain system or mountain belt is a group of mountain ranges with similarity in form and alignment that have arisen from the same cause an orogeny. Mountain ranges are formed by a variety of geological processes, but most of the significant ones on Earth are the result of plate tectonics. Mountain ranges are found on many planetary mass objects in the Solar System and are a feature of most terrestrial planets. Mountain ranges are segmented by highlands or mountain passes and valleys. Individual mountains within the same mountain range do not have the same geologic structure or petrology, they may be a mix of different orogenic expressions and terranes, for example thrust sheets, uplifted blocks, fold mountains, volcanic landforms resulting in a variety of rock types. Most geologically young mountain ranges on the Earth's land surface are associated with either the Pacific Ring of Fire or the Alpide Belt.
The Pacific Ring of Fire includes the Andes of South America, extends through the North American Cordillera along the Pacific Coast, the Aleutian Range, on through Kamchatka, Taiwan, the Philippines, Papua New Guinea, to New Zealand. The Andes is 7,000 kilometres long and is considered the world's longest mountain system; the Alpide belt includes Indonesia and Southeast Asia, through the Himalaya, Caucasus Mountains, Balkan Mountains fold mountain range, the Alps, ends in the Spanish mountains and the Atlas Mountains. The belt includes other European and Asian mountain ranges; the Himalayas contain the highest mountains in the world, including Mount Everest, 8,848 metres high and traverses the border between China and Nepal. Mountain ranges outside these two systems include the Arctic Cordillera, the Urals, the Appalachians, the Scandinavian Mountains, the Great Dividing Range, the Altai Mountains and the Hijaz Mountains. If the definition of a mountain range is stretched to include underwater mountains the Ocean Ridges form the longest continuous mountain system on Earth, with a length of 65,000 kilometres.
The mountain systems of the earth are characterized by a tree structure, where mountain ranges can contain sub-ranges. The sub-range relationship is expressed as a parent-child relationship. For example, the White Mountains of New Hampshire and the Blue Ridge Mountains are sub-ranges of the Appalachian Mountains. Equivalently, the Appalachians are the parent of the White Mountains and Blue Ridge Mountains, the White Mountains and the Blue Ridge Mountains are children of the Appalachians; the parent-child expression extends to the sub-ranges themselves: the Sandwich Range and the Presidential Range are children of the White Mountains, while the Presidential Range is parent to the Northern Presidential Range and Southern Presidential Range. The position of mountains influences climate, such as snow; when air masses move up and over mountains, the air cools producing orographic precipitation. As the air descends on the leeward side, it warms again and is drier, having been stripped of much of its moisture.
A rain shadow will affect the leeward side of a range. Mountain ranges are subjected to erosional forces which work to tear them down; the basins adjacent to an eroding mountain range are filled with sediments which are buried and turned into sedimentary rock. Erosion is at work while the mountains are being uplifted until the mountains are reduced to low hills and plains; the early Cenozoic uplift of the Rocky Mountains of Colorado provides an example. As the uplift was occurring some 10,000 feet of Mesozoic sedimentary strata were removed by erosion over the core of the mountain range and spread as sand and clays across the Great Plains to the east; this mass of rock was removed as the range was undergoing uplift. The removal of such a mass from the core of the range most caused further uplift as the region adjusted isostatically in response to the removed weight. Rivers are traditionally believed to be the principal cause of mountain range erosion, by cutting into bedrock and transporting sediment.
Computer simulation has shown that as mountain belts change from tectonically active to inactive, the rate of erosion drops because there are fewer abrasive particles in the water and fewer landslides. Mountains on other planets and natural satellites of the Solar System are isolated and formed by processes such as impacts, though there are examples of mountain ranges somewhat similar to those on Earth. Saturn's moon Titan and Pluto, in particular exhibit large mountain ranges in chains composed of ices rather than rock. Examples include the Mithrim Montes and Doom Mons on Titan, Tenzing Montes and Hillary Montes on Pluto; some terrestrial planets other than Earth exhibit rocky mountain ranges, such as Maxwell Montes on Venus taller than any on Earth and Tartarus Montes on Mars, Jupiter's moon Io has mountain ranges formed from tectonic processes including Boösaule Montes, Dorian Montes, Hi'iaka Montes and Euboea Montes. Peakbagger Ranges Home Page Bivouac.com
Mount Rainier known as Tahoma or Tacoma, is a large active stratovolcano located 59 miles south-southeast of Seattle, in the Mount Rainier National Park. With a summit elevation of 14,411 ft, it is the highest mountain in the U. S. state of Washington, of the Cascade Range of the Pacific Northwest, it is the second topographically prominent mountain in the continental United States and the first in the Cascade Volcanic Arc. Mt. Rainier is considered one of the most dangerous volcanoes in the world, it is on the Decade Volcano list; because of its large amount of glacial ice, Mt. Rainier could produce massive lahars that could threaten the entire Puyallup River valley. "About 80,000 people and their homes are at risk in Mount Rainier’s lahar-hazard zones." Mount Rainier was first known by Tacoma or Tahoma. One hypothesis of the word origin is, in the Lushootseed language spoken by the Puyallup people. Another hypothesis is that "Tacoma" means "larger than Mount Baker" in Lushootseed: "Ta", plus "Koma", Mount Baker.
Other names used include Tahoma and Pooskaus. The current name was given by George Vancouver, who named it in honor of his friend, Rear Admiral Peter Rainier; the map of the Lewis and Clark expedition of 1804-1806 refers to it as "Mt. Regniere". Although "Rainier" had been considered the official name of the mountain, Theodore Winthrop, in his posthumously published 1862 travel book The Canoe and the Saddle, referred to the mountain as "Tacoma" and for a time, both names were used interchangeably, although "Mt. Tacoma" was preferred in the city of Tacoma. In 1890, the United States Board on Geographic Names declared that the mountain would be known as "Rainier". Following this in 1897, the Pacific Forest Reserve became the Mount Rainier Forest Reserve, the national park was established three years later. Despite this, there was still a movement to change the mountain's name to "Tacoma" and Congress was still considering a resolution to change the name as late as 1924. In the lead-up to Super Bowl XLVIII, the Washington State Senate passed a resolution on Friday, January 31, 2014, temporarily renaming the mountain Mount Seattle Seahawks until the midnight after the Super Bowl, February 3, 2014, in response to the renaming of 53 mountains in Colorado after the 53 members of the Denver Broncos by Governor of Colorado John Hickenlooper.
After the 2015 restoration of the original name Denali from Mount McKinley in Alaska, debate over Mount Rainier's name intensified. Mount Rainier is the tallest mountain in the Cascade Range; this peak is located just southeast of Seattle and Tacoma. Mount Rainier is ranked third of the 128 ultra-prominent mountain peaks of the United States. Mount Rainier has a topographic prominence of 13,210 ft, greater than that of K2, the world's second-tallest mountain, at 13,189 ft. On clear days it dominates the southeastern horizon in most of the Seattle-Tacoma metropolitan area to such an extent that locals sometimes refer to it as "the Mountain." On days of exceptional clarity, it can be seen from as far away as Corvallis and Victoria, British Columbia. With 26 major glaciers and 36 sq mi of permanent snowfields and glaciers, Mount Rainier is the most glaciated peak in the lower 48 states; the summit is topped by two volcanic craters, each more than 1,000 ft in diameter, with the larger east crater overlapping the west crater.
Geothermal heat from the volcano keeps areas of both crater rims free of snow and ice, has formed the world's largest volcanic glacier cave network within the ice-filled craters, with nearly 2 mi of passages. A small crater lake about 130 by 30 ft in size and 16 ft deep, the highest in North America with a surface elevation of 14,203 ft, occupies the lowest portion of the west crater below more than 100 ft of ice and is accessible only via the caves; the Carbon, Mowich and Cowlitz Rivers begin at eponymous glaciers of Mount Rainier. The sources of the White River are Winthrop and Fryingpan Glaciers; the White and Mowich join the Puyallup River, which discharges into Commencement Bay at Tacoma. The broad top of Mount Rainier contains three named summits; the highest is called the Columbia Crest. The second highest summit is Point Success, 14,158 ft, at the southern edge of the summit plateau, atop the ridge known as Success Cleaver, it has a topographic prominence of about 138 ft, so it is not considered a separate peak.
The lowest of the three summits is Liberty Cap, 14,112 ft, at the northwestern edge, which overlooks Liberty Ridge, the Sunset Amphitheater, the dramatic Willis Wall. Liberty Cap has a prominence of 492 ft, so would qualify as a separate peak under most prominence-based rules. A prominence cutoff of 400 ft is used in Washington state. High on the eastern flank of Mount Rainier is a peak known as Little Tahoma Peak, 11,138 ft, an eroded remnant of the earlier, much higher, Mount Rainier, it has a prominence of 858 ft, it is never climbed in direct conjunction with Columbia Crest, so it is considered a separate peak. If considered separately from Mt. Rainier, Little Tahoma Peak would be the third highest mountain peak in Washington. Mount Rainier is a stratovolcano in the Cascade Volcanic Arc that consists of lava flows, debris flows, pyroclastic ejecta and flows, its early volcanic deposits are estimated
Mount Marcus Baker
Mount Marcus Baker is the highest peak of the Chugach Mountains of Alaska. It is located 75 miles east of Anchorage; this peak is prominent because of its proximity to tidewater and is only 12 miles north of the calving face of Harvard Glacier. When ranked by topographic prominence, Mount Marcus Baker is one of the top 75 peaks in the world. Mount Marcus Baker was called "Mount Saint Agnes"; the name was changed to honor a cartographer and geologist named Marcus Baker. The peak was first climbed on June 1938 by a party led by famed explorer Bradford Washburn. Today's standard route is the North Ridge. Despite being much lower in elevation than Denali, Marcus Baker is a serious ascent, due to the remoteness of the peak and the resulting length of the approach and climb. A number of noted climbers have perished or sustained permanent injury in attempting to summit the peak as climbing conditions can change as storms arise. In early 1988, a State of Alaska Fish and Game biologist, 28-year-old Sylvia Jean Lane, succumbed to hypothermia as a two-day storm separated her from the two others in the climbing party attempting to dash to the top in a winter ascent.
List of mountain peaks of North America List of mountain peaks of the United States List of mountain peaks of Alaska List of Ultras of the United States Alaskan peaks with prominence > 1500m Mount Marcus Baker on bivouac.com
Haleakalā, or the East Maui Volcano, is a massive shield volcano that forms more than 75% of the Hawaiian Island of Maui. The western 25% of the island is formed by another volcano, Mauna Kahalawai referred to as the West Maui Mountains; the tallest peak of Haleakalā, at 10,023 feet, is Puʻu ʻUlaʻula. From the summit one looks down into a massive depression some 11.25 km across, 3.2 km wide, nearly 800 m deep. The surrounding walls are steep and the interior barren-looking with a scattering of volcanic cones. Early Hawaiians applied the name Haleakalā to the general mountain. Haleakalā is the name of a peak on the southwestern edge of Kaupō Gap. In Hawaiian folklore, the depression at the summit of Haleakalā was home to the grandmother of the demigod Māui. According to the legend, Māui's grandmother helped him capture the sun and force it to slow its journey across the sky in order to lengthen the day. According to the United States Geological Survey USGS Volcano Warning Scheme for the United States, the Volcano Alert Level for Haleakala as of August 2015 was "normal".
A Normal status is used to designate typical volcanic activity in a non-eruptive phase. Haleakala has produced numerous eruptions including in the last 500 years; this volcanic activity has been along two rift zones: east. These two rift zones together form an arc that extends from La Perouse Bay on the southwest, through the Haleakalā Crater, to Hāna to the east; the east rift zone continues under the ocean beyond the east coast of Maui as Haleakalā Ridge, making the combined rift zones one of the longest in the Hawaiian Islands chain. Until East Maui Volcano was thought to have last erupted around 1790, based on comparisons of maps made during the voyages of La Perouse and George Vancouver. Recent advanced dating tests, have shown that the last eruption was more to have been in the 17th century; these last flows from the southwest rift zone of Haleakalā make up the large lava deposits of the Ahihi Kina`u/La Perouse Bay area of South Maui. Contrary to popular belief, Haleakalā crater is not volcanic in origin, nor can it be called a caldera.
Scientists believe that Haleakalā's crater was formed when the headwalls of two large erosional valleys merged at the summit of the volcano. These valleys formed the two large gaps — Koʻolau on the north side and Kaupō on the south — on either side of the depression. Macdonald, Abbott, & Peterson state it this way: Haleakalā is far smaller than many volcanic craters. On the island of Hawaiʻi, lava-flow hazards are rated on a scale of one through nine with one being the zone of highest hazard and nine being the zone of lowest hazard. For example, the summits and rift zones of Kilauea and Mauna Loa volcanoes are rated Hazard Zone 1. Using this same scale, preliminary estimates of lava-flow hazard zones on Maui made in 1983 by the U. S. Geological Survey rated the summit and southwest rift zone of Haleakala as Hazard Zone 3; the steep, downslope areas of the Kanaio and Kahikinui ahupuaʻa and the area north of Hana are rated as Hazard Zone 4. Other areas of Haleakala are rated comparable to the lava-flow hazards of Mauna Kohala.
These high hazard estimates for Haleakala are based on the frequency of its eruptions. Haleakala has erupted three times in the last 900 years. By way of comparison, both Mauna Loa and Kilauea have erupted more than a dozen times each in the last 90 years. Hualalai has an eruption rate comparable to Haleakala. All of Hualalai is rated as Hazard Zone 4. However, the frequency of eruption of a volcano is only one of the criteria on which hazards are based; the other important criterion is the lava flow coverage rate. Using the preliminary dates for Haleakala flows, only 8.7 square miles of lava flows have been emplaced in the last 900 years. In comparison 43 square miles of Hualalai are covered with flows 900 years old or younger and 104 square miles on Kilauea and 85 square miles on Mauna Loa are covered by lavas less than 200 years old. Thus, Haleakala is a distant fourth in coverage rates. Surrounding and including the crater is Haleakalā National Park, a 30,183-acre park, of which 24,719 acres are wilderness.
The park includes the summit depression, Kipahulu Valley on the southeast, ʻOheʻo Gulch, extending to the shoreline in the Kipahulu area. From the summit, there are two main trails leading into Haleakalā: Sliding Sands Trail and Halemauʻu Trail; the temperature near the summit tends to vary between about 40 °F and 60 °F and given the thin air and the possibility of dehydration at that elevation, the walking trails can be more challenging than one might expect. This is aggravated by the fact; because of this, hikers are faced with a difficult return ascent after descending 2000 ft or more to the crater floor. Despite this, Haleakalā is popular with tourists and locals alike, who venture to its summit, or to the visitor center just below the summit, to view the sunrise. There is lodging in the form of a few simple cabins, though no gas is available in the park; because of the remarkable clarity and stillness of the air, its elevation (with atmospheric pressure of 71 kilopascal
Southeast Fairbanks Census Area, Alaska
Southeast Fairbanks Census Area is a census area located in the U. S. state of Alaska. As of the 2010 census, the population was 7,029, it therefore has no borough seat. Its largest communities are unincorporated CDPs. According to the U. S. Census Bureau, the census area has a total area of 25,059 square miles, of which 24,769 square miles is land and 291 square miles is water. Fairbanks North Star Borough, Alaska – Northwest Yukon-Koyukuk Census Area, Alaska – North Valdez-Cordova Census Area, Alaska – South Matanuska-Susitna Borough, Alaska – Southwest Denali Borough, Alaska – West Yukon Territory, Canada – East Tetlin National Wildlife Refuge Wrangell-St. Elias National Park and Preserve Wrangell-Saint Elias Wilderness Yukon-Charley Rivers National Preserve As of the census of 2000, there were 6,174 people, 2,098 households, 1,506 families residing in the census area; the population density was 0.25 people per square mile. There were 3,225 housing units at an average density of 0.13/sq mi. The racial makeup of the census area was 78.99% White, 1.98% Black or African American, 12.71% Native American, 0.68% Asian, 0.15% Pacific Islander, 0.73% from other races, 4.76% from two or more races.
2.70% of the population were Hispanic or Latino of any race. 4.29% reported speaking an Athabaskan language at home, while 4.02% speak Russian, 3.76% Ukrainian, 2.34% Spanish. There were 2,098 households out of which 39.40% had children under the age of 18 living with them, 58.20% were married couples living together, 8.60% had a female householder with no husband present, 28.20% were non-families. 23.50% of all households were made up of individuals and 5.50% had someone living alone, 65 years of age or older. The average household size was 2.80 and the average family size was 3.34. In the census area the population was spread out with 32.80% under the age of 18, 7.60% from 18 to 24, 27.80% from 25 to 44, 25.70% from 45 to 64, 6.10% who were 65 years of age or older. The median age was 34 years. For every 100 females, there were 107.20 males. For every 100 females age 18 and over, there were 108.60 males. Delta Junction Eagle List of airports in the Southeast Fairbanks Census Area Census Area map, 2000 census: Alaska Department of Labor Census Area map, 2010 census: Alaska Department of Labor Media related to Southeast Fairbanks Census Area, Alaska at Wikimedia Commons