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Topic: Stratovolcano

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	Volcanoes -- Earth's Plates: Volcano Information
		This Russian stratovolcano, which is on a convergent margin, has begun to come to life in the last year.
		The volcano is a stratovolcano on a convergent margin.
		The volcano, a stratovolcano located on a convergent margin, has been active since the 1631 eruption and produced a minor eruption in 1944.
	www.learner.org /exhibits/volcanoes/activty2/volcinfo.html (528 words)

	Mount Mageik, A Stratovolcano
		Usually constructed over a period of tens to hundreds of thousands of years, stratovolcanoes may erupt a variety of magma types, including basalt, andesite, dacite, and rhyolite.
		A stratovolcano typically consists of many separate vents, some of which may have erupted cinder cones and domes on the volcano's flanks.
		Mount St. Helens is the youngest stratovolcano in the Cascades and the most active.
	www.solarviews.com /cap/volc/strato.htm (217 words)

	POLANA STRATOVOLCANO
		Composed of the relics of three superposed stratovolcanoes (lithostratigraphically defined by various formations and members) - the Šútovka Stratovolcano (lower structure), the Bobrovo tuffitic rhyodacitic volcano and caldera (middle structure) and the Veľká Detva stratovolcano and Kyslinky erosive caldera (upper structure), this volcanic centre has a complex, polygenetic structure and stage development.
		The Šútovka stratovolcano, whose development spanned a time of some 260 000 years, is composed of pyroclastics, epiclastics, sparse intrusive- extrusive breccias and lava flows of amphibole- pyroxene andesites and lesser pyroxenic andesites.
		The basal part of the upper structure of the Veľká Detva Stratovolcano - the Abčina Formation and its Hučava Member, situated closer to the centre - are composed of agglomerates, pyroclastic flows, lahars and scarce amphibole-bearing pyroxenic andesite lava flows.
	www.tuke.sk /vulkanklub/Vulkany/Slovakia/CentralSlovakia/Polana/PolanaEN.html (661 words)

	Vic Camp - Stratovolcanoes
		Stratovolcanoes, also known as composite cones, are the most picturesque and the most deadly of the volcano types.
		Examples of subduction-related stratovolcanoes can be found in many places in the world, but they are particularly abundant along the rim of the Pacific Ocean, a region known as Ring of Fire.
		In the Americas, the Ring of Fire includes stratovolcanoes forming the Aleutian islands in Alaska, the crest of the Cascade Mountains in the Pacific Northwest, and the high peaks of the Andes Mounains in South America.
	www.geology.sdsu.edu /how_volcanoes_work/stratovolc_page.html (405 words)

	Brainboost - what is a Stratovolcano (Site not responding. Last check: )
		Stratovolcano A stratovolcano is a tall, conical volcano composed of many layers of hardened lava, tephra, and volcanic ash.
		The symmetrical Mount Cleveland stratovolcano is situated at the western end of the uninhabited dumbbell - shaped Chuginadak Island in the east - central Aleutians.
		This stratovolcano is composed of basaltic andesite to andesite lava.
	www.brainboost.com /search.asp?Q=what+is+a+Stratovolcano&lfmq=1 (405 words)

	Stratovolcano - Encyclopedia, History, Geography and Biography
		A stratovolcano is a tall, conical volcano composed of one layer of hardened lava, tephra, and volcanic ash.
		Stratovolcanoes are a by-product of the subduction of tectonic plates.
		Although stratovolcanoes are sometimes called composite volcanoes, volcanologists prefer to use the term stratovolcano to distinguish among volcanoes because all volcanoes of any size have a composite (layered) structure — that is, are built up from sequential outpourings of eruptive materials.
	www.arikah.com /encyclopedia/Stratovolcano (425 words)

	NationMaster - Encyclopedia: Mount Shasta (Site not responding. Last check: )
		stratovolcano, is the second-highest peak in the Cascade Range and the fifth highest peak in California.
		Mount Shasta, a 14,162-foot (4,322 m) stratovolcano, is the second-highest peak in the Cascade Range and the second-highest peak in California outside of the Sierra Nevada [1].
		The rest of Shasta's surface is relatively free of glacial erosion except, paradoxically, for its south side where Sargents Ridge runs parallel to the U-shaped Avalanche Gulch (the largest glacial valley on the volcano, although it does not presently have a glacier in it).
	www.nationmaster.com /encyclopedia/Mount-Shasta (824 words)

	Stratovolcano - The Encyclopedia
		Kazbek in Georgia, a dormant stratovolcano in the Caucasus
		Stratovolcanoes are a by-product of the subduction of tectonic plates.
		Although stratovolcanoes are sometimes called composite volcanoes, volcanologists prefer to use the term stratovolcano to distinguish among volcanoes because all volcanoes of any size have a composite (layered) structure â” that is, are built up from sequential outpourings of eruptive materials.
	www.the-encyclopedia.com /description/Stratovolcano (365 words)

	Stratovolcano (Site not responding. Last check: )
		A stratovolcano (also composite cone or composite volcano) is a tall, conical mountain (volcano) composed of both hardened lava and volcanic ash.
		At the other end of the spectrum are shield volcanoes (such as Mauna Loa in Hawai'i), which are formed from less viscous lavas, giving them a wide base and more gently sloping profile.
		Stratovolcanoes are often created by subduction of tectonic plates.
	www.free-download-soft.com /info/stratovolcano.html (167 words)

	ESA - Observing the Earth - Double volcanic eruption in Eastern Russia
		This 7 March 2005 Envisat MERIS image shows the unusual phenomenon of the simultaneous eruption of two stratovolcanoes, Kliuchevskoi and Shiveluch (or Sheveluch) on Russia's Kamchatka Peninsula.
		Stratovolcanoes are formed of alternating layers of pyroclastic materials and subordinate lavas.
		The lava produced during stratovolcano eruptions is typically andesitic, with fine grains and dark colour.
	www.esa.int /esaEO/SEMUVXO256E_index_3.html (149 words)

	Stratovolcanoes. Photos and brief explanation
		Steep, conical volcanoes built by the eruption of viscous lava flows, tephra, and pyroclastic flows, are called stratovolcanoes.
		The violent eruption and caldera collapse in 79AD destroyed the top of old Vesuvius volcano, but being an extremely active volcano, Vesuvius has already begun to rebuild a new cone (on the right); the left peak, Monte Somma, is a remnant of the pre-79AD edifice (dotted red line).
		The N cliffs of Santorini expose the interior of an ancient eroded stratovolcano truncated by caldera collapse.
	www.decadevolcano.com /photos/keywords/stratovolcano.htm (216 words)

	Global Volcanism Program \| Volcanic Activity Reports \| SI / USGS Weekly Volcanic Activity Report (Site not responding. Last check: )
		The elongate, 9-km-long island of Anatahan in the central Mariana Islands consists of large stratovolcano with a 2.3 x 5 km, E-W-trending compound summit caldera.
		Four large radial valleys extend from the unvegetated summit of the conical 1,807-m-high stratovolcano to its lower flanks.
		The upper slopes of the stratovolcano, composed primarily of Pleistocene andesitic lava flows, steepen to nearly 45 degrees.
	www.volcano.si.edu /reports/usgs/index.cfm (3888 words)

	Volcanoes shaped peaks \| www.azstarnet.com ®
		The literally earth-shattering eruptions came from a stratovolcano - similar to modern-day Pacific Northwest volcanoes such as Mount Rainier and Mount St. Helens.
		Kring said eruptions of the main Tucson Mountains stratovolcano, which may have been 10,000 to 16,000 feet high, were among the most dramatic events in the volcanic history of the range, where the highest point today is 4,687-foot Wasson Peak.
		Eventually, after repeated eruptions, the magma chamber under the volcano was hollowed out, and the enormous amount of erupted matter on the surface collapsed - consuming the stratovolcano and forming a vast basin known as a caldera.
	www.azstarnet.com /sn/printDS/13393 (1231 words)

	Description of the Three Sisters (Site not responding. Last check: )
		North Sister is 3,074 meters in height and is a stratovolcano atop a shield volcano (USGS, 2002d).
		Middle Sister is 3,062 meters in height and is a stratovolcano.
		South Sister is 3,157 meters in height and is a stratovolcano.
	www.emporia.edu /earthsci/student/howard1/descript.htm (375 words)

	Savage Earth: Out of the Inferno
		The result is an explosion of gas, ash, and fiery fragments of volcanic rock.
		Most of the damage in stratovolcano eruptions comes not from lava flow but from a phenomenon known as pyroclastic flow.
		A pyroclastic flow is an avalanche of ground-hugging hot rock accompanied by a cloud of ash and gas that races down the slope of a volcano.
	www.pbs.org /wnet/savageearth/volcanoes/index.html (1350 words)

	Building a Stratovolcano
		apply this knowledge to distinguish a stratovolcano from a shield volcano or cinder cone.
		Inform the students that while there are 26 different types of volcanoes, the most common types are stratovolcanoes, shield volcanoes, and cinder cones.
		During the group discussion of results and during the closing of the lesson, the teacher should make sure the same students are not always answering the questions.
	www.learnnc.org /lessons/jessicabohn142005909 (1092 words)

	Stratovolcano - John Seach
		Stratovolcanoes are the most common type of volcano.
		These volcanoes typically have the steep conical form that most people associate with a volcano.
		A stratovolcano consists of explosively erupted cinders and ash mixed with lava flows.
	www.volcanolive.com /stratovolcano.html (90 words)

	Volcanic and Geologic Terms
		Stratigraphic: The study of rock strata, especially of their distribution, deposition, and age.
		Stratovolcano: A volcano composed of both lava flows and pyroclastic material.
		Streak: The color of a mineral in the powdered form.
	volcano.und.nodak.edu /vwdocs/glossary.html (4560 words)

	Stratovolcano Information (Site not responding. Last check: )
		A stratovolcano is a tall, conical mountain (volcano) composed of many layers of hardened lava, tephra, and volcanic ash.
		This is in contrast to less viscous basic magma that forms shield volcanoes (such as Mauna Loa in Hawaii), which has a wide base and more gently sloping profile.
		The water remains in the melt and upon eruption conributes to the explosive power of these volcanoes as superheated steam.
	www.bookrags.com /Stratovolcano (346 words)

	Alaska Volcano Observatory - Current AVO Reports
		It is a stratovolcano that is mostly covered by Fourpeaked Glacier.
		Korovin Volcano is a 1553-m-high (5030 ft) stratovolcano located on the northern part of Atka Island in the central Aleutian Islands, about 184 km (110 mi) east of Adak, 538 km (350 mi) west of Dutch Harbor, and 1760 km (1100 mi) southwest of Anchorage.
		Mount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville.
	www.avo.alaska.edu /activity/avoreport.php?view=update&releaseid=121&month=January2005 (1165 words)

	Vulcano, Italy
		The older stratovolcano is just to the left of the center of the photo.
		The history of Vulcano begins with the formation of a stratovolcano that collapsed to producing the Il Piano caldera.
		The Lentia lava dome complex grew to the northwest of the older stratovolcano.
	volcano.und.edu /vwdocs/volc_images/europe_west_asia/vulcano.html (677 words)

	hawaii volcano and a stratovolcano (Site not responding. Last check: )
		Kelimutu is a stratovolcano that has blown its top off...
		Etna is a large stratovolcano with frequent activity consisting of lava...
		Whether a stratovolcano has effusive or explosive eruptive activity...
	www.yourhawaiiguide.com /36/hawaii-volcano-and-a-stratovolcano.html (227 words)

	Erupting Alaska Volcano Helps Explain Volcanic Processes - US Department of State
		GPS is a U.S. system of satellites, computers and receivers that can be used to determine the latitude and longitude of a receiver on Earth by calculating the time difference for signals from different satellites to reach the receiver.
		Augustine is a large stratovolcano -- a volcano composed of alternating layers of lava and ash -- in the southern Cook Inlet southwest of Anchorage, Alaska.
		A large stratovolcano located in the southern Cook Inlet southwest of Anchorage, Augustine is one of the regions most active volcanoes.
	usinfo.state.gov /gi/Archive/2006/Feb/09-284554.html (1088 words)

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