|
List Of Volcanoes Of The United States
A list of volcanoes in the United States and its territories. Alaska American Samoa Arizona California Colorado Hawaii /[./[Https://www.sci.news/geology/puhahonu-shield-volcano-08435.html Puhahonu - - - Unknown Idaho Illinois Louisiana Michigan Mississippi Missouri Nevada New Hampshire New Jersey New Mexico Sierra Grande -. -. -. 2.41 to 2.88 million years ago Northern Mariana Islands Oregon Texas Utah Virginia Washington Wyoming See also *Geothermal energy in the United States * List of Cascade volcanoes * List of large volume volcanic eruptions in the Basin and Range Province * List of volcanoes in Canada * List of volcanoes in Mexico *List of volcanoes in Russia *List of volcanic craters in Alaska *List of volcanic craters in 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] |
Capital Mountain
Capital Mountain is an andesitic shield volcano located in Alaska Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., .... Its elevation is 7,730 ft (2356 m). References External links * Volcanoes of Alaska Shield volcanoes of the United States Pleistocene shield volcanoes Calderas of Alaska Pleistocene calderas {{CopperRiverAK-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Edgecumbe (Alaska)
Mount Edgecumbe (russian: Эджком) is located at the southern end of Kruzof Island, Alaska, about west of Sitka. The volcano is about east of the Queen Charlotte Fault that separates the North American and Pacific Plates, and is the highest point in the Mount Edgecumbe volcanic field, an area of about on Kruzof Island that also includes Crater Ridge and Shell Mountain. Mount Edgecumbe has not had a major eruption in 4000 years. Recent earthquake activity shows magma intrusion at a depth of , but as of 2022, an eruption does not appear to be imminent. It has been classified by the Alaska Volcano Observatory (AVO) as "historically active". Mount Edgecumbe was a prop in a 1974 April Fools' Joke, which involved tricking the citizens of Sitka into believing the volcano was erupting. Name The indigenous Tlingit people considered the mountain to be sacred. In the Tlingit language, the mountain is called L’ux, which means "to flash" or "blinking," purportedly because the Tl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Dutton
Mount Dutton is a stratovolcano in the Aleutian Range of the U.S. state of Alaska, on the Alaska Peninsula. Geography Dutton lies just short of from King Cove, a fishing headquarters for the locality. Geologic activity Dutton is a highly glaciated volcano. Its summit is composed of a series of lava domes which form a complex stratovolcano. The mountain's recent history is marked by at least avalanche which removed andesitic lava flows and several lava domes from the flank of its body and swiftly cascaded westward and southward towards Belkofski Bay. Between 1984 and 1985, a series of earthquake swarms took place in the volcano's vicinity. Another swarm took place in the summer of 1988. See also *List of volcanoes in the United States A list of volcanoes in the United States and its territories. Alaska American Samoa Arizona California Colorado Hawaii /[./[Https://www.sci.news/geology/puhahonu-shield-volcano-08435.html Puhahonu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Douglas (Alaska)
Mount Douglas is a stratovolcano located south of Kamishak Bay, near the northeasternmost part of the Alaska Peninsula. It lies in the Katmai National Park and Preserve in Kenai Peninsula Borough. The mountain was officially named in 1906 after nearby Cape Douglas based on a 1904 report by USGS geologist G. C. Martin. The Alaska Volcano Observatory currently rates Douglas as Level of Concern Color Code Not Assigned. The volcano has a warm and highly acidic crater lake approximately 160 m (525 ft) wide. In 1982, the lake had a temperature of 21 °C and a pH of 1, and temperatures of 114-118°C were measured in 1991. At the north flank of the volcano unglaciated and relatively uneroded lava flows are found. The last eruption is not known, but probably occurred during the Holocene. __TOC__ See also *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 *List o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene
The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology. The name is a combination of Ancient Greek grc, label=none, πλεῖστος, pleīstos, most and grc, label=none, καινός, kainós (latinized as ), 'new'. At the end of the preceding Pliocene, the previously isolated North and South American continents were joined by the Isthmus of Panama, causing Great American Interchang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Devils Desk
Devils Desk is a stratovolcano in Alaska's Katmai National Park, split between the Kodiak Island and Lake and Peninsula boroughs of that U.S. state. Its peak, which is located in Kodiak Island Borough, lies above sea level. It has an elevation of . The age of the volcano is not certain, but a sample from the southwest face of the volcano was dated at 245,000 years old. The edifice represents the neck of a formerly larger stratovolcano, whose flanks have been removed by glacial erosion. The summit is almost encircled by Hook Glacier. See also *List of volcanoes in the United States of America A list of volcanoes in the United States and its territories. Alaska American Samoa Arizona California Colorado Hawaii /[./[Https://www.sci.news/geology/puhahonu-shield-volcano-08435.html Puhahonu ... References External links Devils Desk at the Alaska Volcano Observatory Volcanoes of Kodiak Island Borough, Alaska Volcanoes of Lake ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Denison
Mount Denison is a stratovolcano and one of the highest peaks on the Alaska Peninsula. Discovered in 1923 by Harvard professor Kirtley Fletcher Mather, the mountain was named for the geologist's alma mater, Denison University. The mountain's connection to Denison also include its first climbers: all members of the first two ascent teams as well as the group that attempted in 1977 were either students, alumni, or faculty of the university. Mount Denison is located at the end of a volcanic chain in a heavily glaciated and very remote section of Katmai National Park. It is possibly the tallest mountain in the national park, though some sources list Mount Griggs as the highest. Mount Griggs, on the other hand, is much more accessible, being next to the Valley of Ten Thousand Smokes, which can be reached via the road from the national park's visitor center. There is no record of an eruption, but Mount Denison was probably active some time in the last 10,000 years (the Holocene epoch) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Davidof Volcano
Davidof Volcano is a potentially active stratovolcano and caldera remnant in the Aleutian Islands of Alaska, USA, from Anchorage. Located on the eponymous island, Davidof is part of the Rat Islands sub-chain. It is also part of the "Aleutian Krakatau", a group of four islands formed when a stratovolcano caved in during the late Cenozoic. In December 2021, an earthquake swarm was detected on the island, causing the Alaska Volcano Observatory to raise the volcano's alert level to Yellow. Another earthquake swarm, possibly a continuation of the first, was detected in late January 2022. Accessibility Since the island is uninhabited, very little transportation is available. Transport can be found in Adak, albeit that the town is Wood and Kienle, page 20. from the island. Geography and geology Because of the inclusion of Alaska, the United States has the largest number of active volcanoes in the world, many of them geologically young. In Alaska, at least 50 volcanoes, includin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Dana (Alaska)
Mount Dana is a small stratovolcano of the Alaska Peninsula, United States, located northeast of Canoe Bay inlet at the head of Pavlof Bay. It was the source for a major eruption about 3840 years ago that produced a pyroclastic flow that filled valleys south and west of the volcano's crater and reached the sea at Canoe Bay. Geography and geology Dana is northeast of the Canoe Bay inlet, as it sits at the top of Pavlof Bay. It is from Anchorage. The United States has the most active volcanoes in the world, many of them geologically young. In Alaska, at least 50 volcanoes, including those in the Aleutian archipelago, have erupted in historical time. The state accounts for ~80% of the United States' volcanoes, excluding the seamounts in the area, ~8% of world volcanoes, and most of these are located among the Aleutian Islands. The Aleutian Islands arc serves as the northern boundary of the Pacific Ring of Fire, where tectonic activity generates earthquakes and volcanic eruptions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Cleveland (Alaska)
Mount Cleveland (also known as Cleveland Volcano) is a nearly symmetrical stratovolcano on the western end of Chuginadak Island, which is part of the Islands of Four Mountains just west of Umnak Island in the Fox Islands of the Aleutian Islands of Alaska. Mt. Cleveland is high, and one of the most active of the 75 or more volcanoes in the larger Aleutian Arc. Aleutian natives named the island after their fire goddess, Chuginadak, who they believed inhabited the volcano. In 1894 a team from the U.S. Coast and Geodetic Survey visited the island and gave Mount Cleveland its current name, after then-president Grover Cleveland. One of the most active volcanoes in the Aleutian Arc, Cleveland has erupted at least 22 times in the last 230 years. A VEI 3 eruption in 1944 produced the arc's only known volcanic fatality. Most recently Mount Cleveland has erupted three times in 2009, twice in 2010, once in 2011 and in 2016 and 2017. The volcano's remoteness limits opportunities f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Mount Cleveland (Alaska)")