What part of the cascade chain of mountains had the most volcanos?
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Oregon State has the most volcanos as a part of the cascade chain.
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types of volcanoes:\n1. shield\n2. composite/strato\n3. caldera\n4. MORB\n \ntypes of eruptions\n1. Strombolian\n2. Vulcanian \n3. Vesuvian\n4. Pelean\n5. Hawaiian\n6. Hawaian\n7. Icelandic\n8. plinian
20175
Geologists classify volcanoes in following ways:\n\nCinder cones are the simplest type of volcano. They are built from particles and blobs of congealed lava ejected from a single vent. As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as cinders around the vent to form a circular or oval cone. Most cinder cones have a bowl-shaped crater at the summit and rarely rise more than a thousand feet or so above their surroundings. Cinder cones are numerous in western North America as well as throughout other volcanic terrains of the world.\n\nSome of the Earth's grandest mountains are composite volcanoes--sometimes called stratovolcanoes. They are typically steep-sided, symmetrical cones of large dimension built of alternating layers of lava flows, volcanic ash, cinders, blocks, and bombs and may rise as much as 8,000 feet above their bases. Some of the most conspicuous and beautiful mountains in the world are composite volcanoes, including Mount Fuji in Japan, Mount Cotopaxi in Ecuador, Mount Shasta in California, Mount Hood in Oregon, and Mount St. Helens and Mount Rainier in Washington.\n\nShield volcanoes, the third type of volcano, are built almost entirely of fluid lava flows. Flow after flow pours out in all directions from a central summit vent, or group of vents, building a broad, gently sloping cone of flat, domical shape, with a profile much like that of a warrior's shield. They are built up slowly by the accretion of thousands of highly fluid lava flows called basalt lava that spread widely over great distances, and then cool as thin, gently dipping sheets. Lavas also commonly erupt from vents along fractures (rift zones) that develop on the flanks of the cone. Some of the largest volcanoes in the world are shield volcanoes. In northern California and Oregon, many shield volcanoes have diameters of 3 or 4 miles and heights of 1,500 to 2,000 feet. The Hawaiian Islands are composed of linear chains of these volcanoes including Kilauea and Mauna Loa on the island of Hawaii-- two of the world's most active volcanoes.\n\nVolcanic or lava domes are formed by relatively small, bulbous masses of lava too viscous to flow any great distance; consequently, on extrusion, the lava piles over and around its vent. A dome grows largely by expansion from within. As it grows its outer surface cools and hardens, then shatters, spilling loose fragments down its sides. Some domes form craggy knobs or spines over the volcanic vent, whereas others form short, steep-sided lava flows known as "coulees." Volcanic domes commonly occur within the craters or on the flanks of large composite volcanoes. The nearly circular Novarupta Dome that formed during the 1912 eruption of Katmai Volcano, Alaska, measures 800 feet across and 200 feet high.
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Africa: Mt. Kilimanjaro\nNorth America: Denali\nEurope: Elbrus\nSouth America: Aconcagua\nAustralia: Carstensz\nAntarctica: Vinson\nAsia: Everest\n\n*Note: In North America, Mt. McKinley has the highest peak (highest point above sea level) however, Denali in Alaska is actually the tallest mountain. But, this is probably for school so you'd better go with McKinley.
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Mount Rainier is a stratovolcano located 54 miles (87 km) southeast of Seattle, Washington, in the United States. It is the highest peak in the Cascade Range, with a topographical summit of 14,411 feet (4,392 m); there is no greater elevation until the meeting of the borders of Yukon, Alaska, and British Columbia beyond the Alsek River to the north. The mountain and the surrounding area comprise Mount Rainier National Park. The mountain is mostly covered by snow and glaciers, but heat from the volcano keeps areas of the crater rim on its summit cone mostly free of snow and ice. The geothermal heat has also caused the formation of ice caves in the twin summit craters.\n\nMore details in \nhttp://en.wikipedia.org/wiki/Mount_Rainier
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Hawaii and Iceland are examples of places where volcanoes extrude huge quantities of basaltic lava that gradually build a wide mountain with a cone-like profile. Olympus Mons is the largest cone volcano on Mars, and is the tallest known mountain in the solar system. Smaller versions of cone volcanoes include lava cones, and lava mounds.\n\nQuiet eruptions spread out basaltic lava in flat layers. The buildup of these layers form a broad volcano with gently sloping sides called a shield volcano or a cone Examples of shield volcanoes are the Hawaiian Islands.
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If extinct/inactive volcanoes are included there are some in your region. Georgia, the Carolinas, and Virginia all have extinct volcanoes. Central Texas, near Austin, also has an extinct volcano. Yellowstone is probably the nearest active volcano, depending on what type of volcano you are looking for. \n\nThere are multiple 200 ft thick lava flows about 570 my old, in Virginia in the Shenandoah National Park. \nhttp://vulcan.wr.usgs.gov/LivingWith/VolcanicPast/Places/volcanic_past_appalachians.html\n\nThe Carolina Slate Belt in North Carolina contains deformed volcanic rocks from a series of volcanic islands that existed about 550-650 mybp. \nhttp://www.geology.enr.state.nc.us/Mineral%20resources/mineralresources.html\n\nHick's Dome in southern Illinois is close to you:\nhttp://ebeltz.net/fieldtrips/sn-trip.html\n\nYou might look in the library for these:\nVolcanoes of the world: a regional directory, gazetteer, and chronology of volcanism during the last 10,000 years   / 2nd ed. / Tom Simkin & Lee Siebert ; with the collaboration of Russell Blong ... [et al.].\nTucson, Ariz.: Geoscience Press in association with the Smithsonian Institution, c1994\n[ Ref. QE522 .S56 1994 ]\nThe volcano registry: names, locations, descriptions, and history for over 1500 sites   / by Harris M. Lentz III.\nJefferson, N.C.: McFarland, c1999\n[ Ref. QE522 .L46 1999 ]
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there are three, right?\n\n    * Yellowstone Caldera, Wyoming, United States - 2.2 million years ago (2500 km³) and 640,000 years ago (1000 km³)\n    * La Garita Caldera, Colorado, United States - 27.8 million years ago (over 5,000 km³)\n    * Bruneau-Jarbidge, Idaho, United States - 10-12 million years ago (responsible for the Ashfall Fossil Beds 1600 km to the east)\n\n I got that from Wikipedia:http://en.wikipedia.org/wiki/Supervolcano\n\nAm I right?  Come back and tell me, please.
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Supervolcanoes are volcanic eruptions where more than 1000 cubic kilometers of material is extruded. As a comparison, the Mount Helens eruption amounted to 2.3 cubic kms.\n\nThe following locations are known to be supervolcanoes:\n\n- Lake Toba, Sumatra, Indonesia - 75,000 years ago (2,800 km³)\n- Yellowstone, United States - 2.2 million years ago (2500 km³) and 640,000 years ago (1000 km³)\n-La Garita Caldera, Colorado, United States - 27.8 million years ago (over 5,000 km³)\n-Bruneau-Jarbidge, Idaho, United States - 10-12 million years ago (responsible for the Ashfall Fossil Beds 1600 km to the east)
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Mount Elbrus (meaning twin peaks) is a peak located in the western Caucasus mountains, in Russia, near the border of Georgia. It is the highest mountain in the Caucasus which belongs to Europe (if the border between Europe and Asia is located south of Mount Elbrus - at the Kura and Qvirila rivers). Mt Elbrus (west summit) stands at 5,642 m (18,506 ft) and can be considered to be the highest mountain in Europe. The east summit is slightly lower: 5,621 m (18,442 ft).
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Composite volcanoes/ strato volcanoe.\n\nSome of the Earth's grandest mountains are composite volcanoes--sometimes called stratovolcanoes. They are typically steep-sided, symmetrical cones of large dimension built of alternating layers of lava flows, volcanic ash, cinders, blocks, and bombs and may rise as much as 8,000 feet above their bases. Some of the most conspicuous and beautiful mountains in the world are composite volcanoes, including Mount Fuji in Japan, Mount Cotopaxi in Ecuador, Mount Shasta in California, Mount Hood in Oregon, and Mount St. Helens and Mount Rainier in Washington.\n\n\n**Here is a personal tip my teacher taught us..depending on the plate it's sitting on and the boundary you will know how the plates strike and collide ...in the case of helen think of yr two hands being forced together straight on max pressure eventually your fingers begin to cave and slide up ward together... it looks olmost pointy and cone shaped right? just like St. Helen... This is assuming you know about plates and faults ....Hopefully you do..if bot disregard..
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i'm pretty sure that these are all considered to be the mid-ocean ridge, which makes up the longest continuous mountain chain in the world.
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Mt. St. Helen has actually been erupting slowly for the last two years. If there were a full scale eruption, the State of Washington is prepared to evacuate the blast zone just like in 1980 (the only people who died were those who refused to leave). Same thing with Mt. Ranier. Too bad about the skyline though, Mt. Ranier is a really distinctive feature in Western Washington.
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Mt. Everest (29,035 ft) is the highest mountain in the world and is part of the Himalayan Mountain chain running along the border between Nepal and Tibet (China).
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I'd have to agree with Kidd - the largest major city at immediate risk from volcanic eruption would be Naples in Italy.  But similarly, those mentioned in Washington are also at risk from the Cascade volcanoes - not so much from eruption eject but from mudflows (lahars).  I'm sure there are some major cities in Indonesia that are near major volcanoes, and those cities are also at great risk, as are most Japaneese cities.
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Indonesia has the most active volcanoes:  86 volcanoes have erupted in its history.\n\nAbout 550 volcanoes have erupted on Earth's surface since recorded history; about 60 are active each year.
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Mt. St. Helens was formed from the subduction of the Juan de Fuca Plate underneath the North American Plate.  Subsequent eruptions, producing basalt and andesitic lava flows, have either reshaped or built up the volcano over time.