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Topic: Composite volcano

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	Volcano- EnchantedLearning.com
		Volcanoes vary quite a bit in their structure - some are cracks in the earth's crust where lava erupts, and some are domes, shields, or mountain-like structures with a crater at the summit.
		Rock also comes from volcanoes in other forms, including ash (finely powdered rock that looks like dark smoke coming from the volcano), cinders (bits of fragmented lava), and pumice (light-weight rock that is full of air bubbles and is formed in explosive volcanic eruptions - this type of rock can float on water).
		The largest volcano on Earth is Hawaii's Mauna Loa.
	www.enchantedlearning.com /subjects/volcano (0 words)

	composite volcano
		The magma (molten rock) associated with composite volcanoes is very thick and often clogs up the vent.
		Examples of composite volcanoes are Mount St Helens in the USA, and Stromboli and Vesuvius in Italy.
		Composite volcanoes are usually found in association with island arcs and coastal mountain chains.
	www.tiscali.co.uk /reference/encyclopaedia/hutchinson/m0035034.html (296 words)

	What is a volcano and how do they affect us (Site not responding. Last check: )
		A volcano is a mound, hill or mountain constructed by solid fragments, lava flows, and/or dome-like extrusions deposited around a vent from which the material is extruded.
		Composite volcanoes are built by multiple eruptions, sometimes recurring over hundreds of thousands of years, sometimes over a few hundred years.
		Composite cones can grow to such heights that their slopes become unstable and susceptible to collapse from the pull of gravity.
	www.promotega.org /GHC06002/volcanoes.htm (1599 words)

	Field Trip to Mars - Kids - Types of Volcanoes
		Composite volcanoes are steep-sided volcanoes composed of many layers of volcanic rocks, usually made from high-viscosity (thick like honey) lava, ash and rock debris (broken pieces).
		Shield volcanoes are volcanoes shaped like a bowl or shield in the middle with long gentle slopes made by basaltic lava flows.
		The volcanoes that formed the basalt of the Columbia Plateau were shield volcanoes as well as Kilauea in Hawaii (left) and Olympus Mons on Mars.
	www.kidscosmos.org /kid-stuff/kids-volcanoes-types.html (813 words)

	Volcanic and Geologic Terms
		Compound Volcano: A volcano that consists of a complex of two or more vents, or a volcano that has an associated volcanic dome, either in its crater or on its flanks.
		Extinct Volcano: A volcano that is not presently erupting and is not likely to do so for a very long time in the future.
		Volcano: A vent in the surface of the Earth through which magma and associated gases and ash erupt; also, the form or structure (usually conical) that is produced by the ejected material.
	volcano.und.nodak.edu /vwdocs/glossary.html (0 words)

	volcanoes
		Composite volcanoes represent some of the greatest and most violent types of volcanoes on earth's surface.
		A typically composite volcano is a steep sided, large structure with a symmetrical cone.
		All that remains of the ancient composite volcanoes are plugs and dike structures raising above the land surface.
	www.coloradocollege.edu /Dept/GY/faculty/wphillips/volcanoes.html (695 words)

	The Ultimate Volcano Website
		Volcanoes form on convergent boundaries by the process of one plate going under the other plate, the first plate melts, and the magma is forces up causing pressure to build up, resulting in a volcano.
		The lava in shield volcanoes is basaltic lava.
		One volcano that erupted is Hosho in Asia.
	geocities.com /logansharkteam/heather/heather.html (571 words)

	10(n) Volcanism
		The volcanoes that do not occur along plate boundaries are the result of localized asthenosphere hot spots that melt through the Earth's crust.
		A cinder cone is a small volcano, between 100 and 400 meters tall, made up of exploded rock blasted out of a central vent at a high velocity (Figure 10n-4 and see link).
		On the island of Krakatau, a caldera type volcano exploded in 1883 ejecting 75 cubic kilometers of material in the air and left a depression in the ground some 7 kilometers in diameter.
	www.physicalgeography.net /fundamentals/10n.html (931 words)

	What is a Volcano? - PDC (Site not responding. Last check: )
		Composite volcanoes are constructed from multiple eruptions, which sometime occur over hundreds of years or hundreds of thousands of years.
		Although Andesitic composite cones are composed mainly of fragmental debris, some of the magma intrudes into the cones as dikes or sills.
		Most composite volcanoes occur in chains and are separated by tens of miles.
	www.pdc.org /iweb/volcano_def.jsp (1276 words)

	Volcano
		A volcano is a mountain that opens downward to a pool of molten rock below the surface of the earth.
		Of the world’s active volcanoes, more than half are found around the perimeter of the Pacific, about a third on midoceanic islands and in an arc along the south of the Indonesian islands, and about a tenth in the Mediterranean area, Africa, and Asia Minor.
		Composite volcanoes Some of the Earth's grandest mountains are composite volcanoes--sometimes called stratovolcanoes.
	www.solcomhouse.com /volcano.htm (1628 words)

	CVO Website - Composite Volcanoes
		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, Mount St. Helens and Mount Rainier in Washington.
		Composite volcanoes tend to erupt explosively and pose considerable danger to nearby life and property.
		Subduction-zone volcanoes like Mount St. Helens (in Washington State) and Mount Pinatubo (Luzon, Philippines), are called composite cones and typically erupt with explosive force, because the magma is too stiff to allow easy escape of volcanic gases.
	vulcan.wr.usgs.gov /Glossary/StratoVolcano/description_composite_volcano.html (0 words)

	COMPOSITE
		Composite cones can grow to such heights that their slopes become unstable and susceptible to collapse from the pull of gravity.
		Famous examples of composite cones are Mayon Volcano Philippines, Mount Fuji in Japan, and Mount Rainier, Washington, U.S.A. Some composite volcanoes attain two to three thousandmeters in height above their bases.
		Most composite volcanoes occur in chains and are separated by several tens of kilometers.
	www.educ.uvic.ca /faculty/mroth/438/VOLCANO/COMPOSITE.html (0 words)

	Geography Site: Vocanoes - Composite Volcanoes (Site not responding. Last check: )
		Composite, or stratovolcanoes, are typically steep sided and may be created over many thousands of years - possibly hundreds of thousands of years - and dozens of eruptions.
		Of the 1,511 volcanoes that are known to have erupted in the past 10,000 years, 699 of them are stratovolcanoes.
		When composite volcanoes erupt we are usually treated to a violent and very explosive event.
	www.geography-site.co.uk /pages/physical/earth/volcanoes/comp.html (1349 words)

	Composite Volcanoes
		Unlike the shield volcanoes which are flat and broad, composite volcanoes are tall, symmetrically shaped, with steep sides, sometimes rising 10,000 feet high.
		Famous composite volcanoes include Mount Fuji in Japan, Mount Cotopaxi in Ecuador, Mount Shasta and Lassen in California, Mount Hood in Oregon, Mount St.
		Helens and Mount Rainier in Washington, Mt Pinatubo in the Philipenes, and Mt. Etna in Italy.
	www.windows.ucar.edu /tour/link=/earth/interior/composite_volcanos.html&edu=elem (0 words)

	Views of the National Parks
		Volcanoes are built from layers of lava and tephra (particles of rock, solidified lava, and ash of all different sizes).
		Composite volcanoes are typically found on island arcs and continents at subduction zones.
		Composite volcanoes are also called stratovolcanoes because they are composed of layers (strata) of lava flows, tephra, and mudflows.
	www2.nature.nps.gov /views/KCs/Volcanism/HTML/ET_01_Intro.htm (3696 words)

	[No title]
		A volcano is a mound, hill or mountain constructed by solid fragments, lava flows, and or dome-like extrusions deposited around a vent from which the material is extruded.
		Composite volcanoes are built by multiple eruptions, sometimes recurring over hundreds of thousands of years, sometimes over a few hundred.
		Although andesitic composite cones are built mostly of fragmental debris, some of the magma intrudes fractures within the cones to form dike or sills.
	volcanology.geol.ucsb.edu /volcano.htm (1836 words)

	composite - Search Results - MSN Encarta
		Composite Flowers, common name for one of the largest families of flowering plants, with more than 20,000 species.
		Composite Material, substance that is made up of a combination of two or more different materials.
		Stratovolcano, also called composite volcano, a volcanic mountain shaped like a cone.
	encarta.msn.com /composite.html (166 words)

	Volcano Dictionary
		Composite Volcano – A steep volcanic cone built by both lava flows and pyroclastic eruptions.
		The term is used to describe a volcano which is presently inactive but which may erupt again.
		Extinct Volcano – A volcano that is not presently erupting and is not likely to do so for a very long time in the future.
	www.ciiigeo.ut.ee /Projects/Volcanos/Volcanos/VolcanoDictionary.htm (951 words)

	Global Volcanism Program \| Volcanoes of the World \| Types and Processes Gallery \| Stratovolcanoes (Site not responding. Last check: )
		The extensively dissected Onogajo volcano forms the older, western part of Iwate and is truncated by the 1.8 x 3 km Nishi-Iwate caldera.
		Stratovolcanoes, also referred to as composite volcanoes, are constructed of sequential layers of resistant lava flows and fragmental material produced by pyroclastic eruptions.
		Stratovolcanoes, also known as composite volcanoes, are built up by accumulated layers of lava flows and fragmental material from explosive eruptions.
	www.volcano.si.edu /world/tpgallery.cfm?category=Stratovolcanoes (1308 words)

	HOT SPOTS, MANTLE PLUMES, CONVECTION, and VOLCANOES
		Volcanoes produced by this type of magma are called Composite, because they are build up from alternating layers of lava flows and pyroclastics, "fire fragmented" fine pieces called ash, as well as larger fragments.
		Shield volcanoes are very broad compared with their height, because the lava is very fluid, flows relatively rapidly, and spreads out.
		The Hawaiian Island chain of volcanoes stretches in a straight line northwestward, and continues as a chain of submerged and eroded volcanoes (seamounts) in the same direction.
	www.math.montana.edu /~nmp/gnESS/volcanoes.htm (1078 words)

	Volcano
		There are three basic kinds of continental volcanoes: the cinder cone volcano, the shield volcano, and the composite volcano (which is also known as a stratovolcano).
		A cinder cone volcano is a steep cone-shaped hill.
		A composite volcano (also known as a stratovolcano) is the most common type of volcano on Earth.
	www.cuca.k12.ca.us /rcms/smith/volcano/contvol.htm (357 words)

	homework help: what is a batholith,acaldera, cinder cone, composite volcano, - Help.com
		Shield volcanoes can be so large that they are sometimes considered to be a mountain range, sush as the Ilgachuz Range and the Rainbow Range, both of which are located in Canada.
		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.
		Volcanoes can also form where there is stretching of the Earth's crust and where the crust grows thin (called "non-hotspot intraplate volcanism"), such as in the African Rift Valley, the European Rhine Graben with its Eifel volcanoes, the Wells Gray-Clearwater Volcanic Field and the Rio Grande Rift in North America.
	help.com /post/20083-what-is-a-batholithacaldera-cinde (1397 words)

	volcano lesson plan
		Although weathered rock is the basic component of soil, the composition and texture of soil and its fertility and resistance to erosion are greatly influenced by plant roots and debris, bacteria, fungi, worms, insects, rodents, and other organisms.
		The three volcanoes that the students viewed are Mauna Kea, an island of Hawaii, is a cinder cone.
		This volcano is very hard for researchers to examine because it is so steep, and it is covered in loosely packed rocks.” Then on the back of the last photos, I had written, “Mt. Nyiragongo, located on the Congo River, in Zaire, recently erupted.
	www.msu.edu /~weissmi1/volcano.htm (3893 words)

	Volcano Books
		A composite volcano is constructed from alternating layers of pyroclastics and rock solidified from lava flows.
		The Tambora volcano in 1815 spewed forth so much ash that 1816 was know as the "year without a summer." Snow fell in New England in June and frost covered the southern United States on the fourth of July.
		Loihi is the youngest of the Hawaiian volcanoes.
	www.vibrationdata.com /VolcanoBooks.htm (948 words)

	A Cinder Cone Eruption
		The violence or lack of violence of a volcanic eruption is determined by the type of lava and the amount of dissolved gasses in the lava.
		Cinder cones will often form around the vents at the top of shield volcanoes, but they are small dots a few hundred feet high on a volcano miles high and tens of miles wide.
		A composite volcano like Mt. Hood, Oregon, or Mt. Fujiyama, Japan are formed by eruptions that alternate between explosive and quiet.
	www.whitethornhouse.com /volcano.htm (1053 words)

	What are the Different Types of Volcanoes?
		The different types of volcanoes are: composite (or stratovolcanoes), shield, cinder cones and spatter cones.
		The composite volcano, when dormant, is generally a beautiful and impressive mountain.
		A complex volcano can be combinations of any of the above volcanoes, but are primarily classified by the fact that they have at least two vents, often erupting in quite different ways.
	www.wisegeek.com /what-are-the-different-types-of-volcanoes.htm (546 words)

	Internet Geography - GeoTopics - Volcanoes
		Composite volcanoes, sometimes known as strato volcanoes, are steep sided cones formed from layers of ash and [lava] flows.
		When composite volcanoes erupt they are explosive and pose a threat to nearby life and property.
		Shield volcanoes have gently sloping sides and are formed from layers of lava.
	www.geography.learnontheinternet.co.uk /topics/typesvolcanoes.html (253 words)

	Volcanoes
		The volcano is built up by the accumulation of material erupted through the conduit and increases in size as lava, cinders, ash, etc., which are added to its slopes.
		As the cone is stripped away, the hardened magma filling the conduit (the volcanic plug) and fissures (the dikes) becomes exposed and is slowly reduced by erosion.
		All that remains is a projecting plug or "volcanic neck," a small lava-capped mesa, and vestiges of the once lofty volcano and its surrounding lava plateau.
	library.thinkquest.org /05aug/01406/volcanoes.htm (461 words)

	Geoscience Australia: Types of volcanoes
		If magma from an erupting volcano is thick and sticky (viscous) it is very hard for gas bubbles to expand.
		Pago, a volcano in Papua New Guinea, is an example of a Composite volcano.
		Kilauea volcano in Hawaii is an example of a shield volcano.
	www.ga.gov.au /urban/factsheets/volcanoes_types.jsp (283 words)

	Volcanoes: Principal Types of Volcanoes
		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.
		Schematic representation of the internal structue of a typical composite volcano.
		All that remains is a projecting plug or "volcanic neck," a small lava-capped mesa, and vestiges of the once lofty volcano and its surrounding lava plateau.
	pubs.usgs.gov /gip/volc/types.html (1544 words)

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