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Topic: Strato volcano


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In the News (Thu 26 Nov 09)

  
  Strato Volcanoes
Strato volcanoes are usually about half-half lava and pyroclastic material, and the layering of these products gives them their other common name of composite volcanoes.
Strato volcanoes are commonly found along subduction-related volcanic arcs, and the magma supply rates to strato volcanoes are lower.
Additionally, strato volcanoes are steep piles of ash, lava, and domes that are often rained heavily on, shaken by earthquakes, or oversteepened by intruding blobs of magma (or all of these).
volcano.und.nodak.edu /vwdocs/vwlessons/volcano_types/strato.htm   (875 words)

  
 Mt. Vesuvius
Volcanoes include many conspicuous mountains of the earth, as Mt Vesuvius in Italy (4,000 ft. High), Mt Loa in Hawaii (14,000 ft), are examples of active volcanoes.
Strato volcano is made when two plates come together and one slide under the other.
The lava from shield volcano is liquid, which flows from the carter and the sides of the volcano.
www.geocities.com /zwlu2001/gg231_vesuviusinfo.html   (1366 words)

  
 Volcano(2)
Strato volcanoes are more like cones, and are made out of thick viscous, pasty lava and pyroclastics.
Cinder cones are like mini strato volcanoes, and are basically made by tephra falls, or ash falls, and pyroclastics.
Strato volcanoes are made by thick, sluggish, viscous, andecitic lava, and rhyolithic lava.
midju.tripod.com /6.htm   (507 words)

  
 composite volcano   (Site not responding. Last check: 2007-11-05)
A volcano that forms a high, central main vent, whose flanks are constructed of alternating lavas and pyroclastic rocks.
These are the well-known, subduction-related volcanoes of the world, and are formed by eruption of andesite to rhyolite magmas.
Shasta is the largest volcano in the Cascades, and has had an eruptive history of over 360,000 years.
www.geology.wisc.edu /~g111/Terms/composite_volcano/composite_volcano.htm   (231 words)

  
 Volcano Types Page
A lava dome is the smallest of the volcanoes.
A cinder cone is the second smallest of the volcanoes.
A shield volcano is much larger than a lava dome or cinder cone.
ellerbruch.nmu.edu /classes/cs255f01/cs255students/kcoon/P9/VolcanoTypes.html   (170 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.
The volcano is built up by the accumulation of material erupted through the conduit and increases in size as lava, cinders, ash, etc., are added to its slopes.
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   (1658 words)

  
 volcano
A shield volcano is widely known to have low angled slopes and is generally less destructive than the other volcanoes, because of its "gentler" ejection of lava.
Shield Volcanoes are considered to be some of the tallest mountains on earth when the portion under the sea is taken into account.
The explosiveness of a volcano is also determined by viscosity, because the stiffer the viscous magma, the less the gases can escape, and the bigger the explosion will be, due to the gas build-up.
www.gpc.edu /~pgore/students/w97/brian   (867 words)

  
 Geologic Hazards Slides, Volume 3 - Landslides, Tsunamis, and Volcanoes
The word "volcano" is used to refer both to the opening from which molten rock and gas issue from Earth's interior onto the surface, and also to the cone, hill, or mountain built up around the opening by the eruptive products.
A strato volcano (also known as a composite volcano) is built of successive layers of ash and lava.
This strato volcano is in southern Washington, 165 km south of Seattle and 80 km north-northeast of Portland, Oregon.
www.ngdc.noaa.gov /seg/cdroms/geohazards_v3/document/739003.htm   (2649 words)

  
 Volcanoes Online: Glossary
Complex Volcano: A volcano that consists of a complex of two or more vents, or a volcano that has an associated dome, either in its crater or on its flanks.
Lava occurs as flows, domes, fragments within cones of volcanoes and as pillows formed on the ocean floor.
Plug:Lava solidified in the conduit of an extinct volcano.
library.thinkquest.org /17457/glossary/glossary.html   (1253 words)

  
 VOLCANO
Strato volcanoes are the most common type of volcano (60% of all earth volcanoes) and the deadliest to man.
This is the propellant force of a volcano.
Ninety percent of the material expelled from this volcano is lava not pyroclastics.
www.internetpuppets.org /tictocvolcano.html   (602 words)

  
 Science Explained, explains the Montserrat volcano and other volcanos.
Technically it is called a "strato volcano" because it is built of layers from older eruptions.
Another name for this kind of volcano is a "composite volcano" referring to the fact that when it erupts it produces both lava and pyroclastic flows.
Strato (composite) volcanoes are the most common type of volcano.
www.synapses.co.uk /science/mvolcano.html   (2804 words)

  
 tambora
Tambora volcano is located in northern part of the island of Sumbawa in the Indonesian volcanic arc.
The strato-volcano formation forms the sockle and flanks of Tambora and is thus the pricncipal foundation of the volcano.
There was no evidence that these lavas have extended to the flanks of the volcano and they seem to be entirely confined within the early caldera.
www.vsi.esdm.go.id /volcanoes/tambora/geology.html   (1012 words)

  
 Monte Vulture volcano, Italy   (Site not responding. Last check: 2007-11-05)
The strongly dissected outer flank of the volcano is visible, a central edifice can be discerned to the right of the summit.
Monte Vulture, with a summit elevation of 1326 m, is peculiar for being the only of the major volcanoes on the Italian peninsula lying to the east of the Apennine chain, and for the occurrence of the mineral hauyne in its lavas.
Although there are recent volcanological studies of the volcano, it remains relatively poorly known, also because it lies far from the major touristic areas of Italy.
boris.vulcanoetna.com /VULTURE.html   (772 words)

  
 volcanic eruption animations
Most volcanic eruptions are "builders," adding thin layers of lava or ash to the sides of a volcano, slowly building the easily recognized cone-shaped volcanoes seen around the world.
Some eruptions, however, are "destructors" knocking off pieces of a volcano's summit or even destroying the entire mountain.
The volcano itself consists of a pile of successive layers of ash (light brown) and lava (dark brown) resting on a pre-existing surface.
www.cotf.edu /ete/modules/volcanoes/veruptanimation.html   (547 words)

  
 Stratovolcano   (Site not responding. Last check: 2007-11-05)
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.
Because all volcanoes of any size have a stratified (layered) structure—that is, are built up from sequential outpourings of eruptive materials—volcanologists prefer to use the term stratovolcano for these mountains.
www.sciencedaily.com /encyclopedia/stratovolcano   (195 words)

  
 Geologic Hazards Slides, Volume 3 - Landslides, Tsunamis, and Volcanoes
The word "volcano" is used to refer to the opening from which molten rock and gas issue from Earth's interior onto the surface, and also to the cone, hill, or mountain built up around the opening by the eruptive products.
Izalco is a young strato volcano on the south flank of Santa Ana Volcano in western El Salvador.
La Soufriere is a strato volcano with a summit dome, on the southern part of Guadeloupe Island.
www.smate.wwu.edu /teched/geology/vo-eruption1.html   (2506 words)

  
 Popocatepetl
Popocatepetl, Popo for short, is an active strato volcano some 45 miles outside of Mexico City, the second most populated city in the world.
The volcano is 17,883 ft tall, and built on a extinct volcano, called Nexpayantla, that makes up the first 12,464 ft of it.
The volcano is an almost perfect cone, and is covered in alternating layers of lava flows and thick pyroclastics.
members.tripod.com /midju/Popo.htm   (246 words)

  
 Types of Volcanoes   (Site not responding. Last check: 2007-11-05)
The Kolotta Dyngja, a typical Icelandic volcano, rises to a height of 460 m with an average slope of 70, approaching 80 towards the summit.
These extinct volcanoes may owe their shape partly to erosion, although they probably never had very pronounced craters but had lava welling right to the brim before solidification.
Such volcanoes, distinguished from cones by their lack of crater, may be termed lava mounds by analogy with scoria mounds.
earthsci.org /geopro/voltype/volctype.html   (2238 words)

  
 Volcanoes that erupted   (Site not responding. Last check: 2007-11-05)
Eruptions in the Hawaiian volcanoes are usually preceded by a series of earthquakes which open fissures and allow magma to reach the surface.
Langila Volcano Langila is one of the most active volcanoes on the island of New Britain.
Gases, primarily in the form of steam, are released from volcanoes during eruptions.
getinfoeasy.com /q/volcanoes-that-erupted.html   (1136 words)

  
 volcano --  Encyclopædia Britannica
It is one of the highest active volcanoes in the world, rising to a height of 15,584 feet (4,750 m), the highest point on the peninsula.
The volcano consists of a truncated cone with a central crater, with some 70 lateral craters and cones on the lower slopes.
A volcano is a vent, or opening, in the surface of the Earth through which magma and associated gases and ash erupt.
www.britannica.com /eb/article?tocId=9108777   (862 words)

  
 USGS Photo Glossary: Stratovolcano
Of Earth's 1,511 volcanoes known to have erupted in the past 10,000 years, 699 are stratovolcanoes.
Earth's highest volcano is a stratovolcano; Nevado Ojos del Salado in Chile is 6,887 m above sea level.
The highest volcano with historic eruptions is Llullaillaco, Chile, at 6,739 m.
volcanoes.usgs.gov /Products/Pglossary/stratovolcano.html   (222 words)

  
 Home Page   (Site not responding. Last check: 2007-11-05)
Their eruptions are the most violent and deadly of all the types of volcanoes.
The essential feature of a composite volcano is a conduit system through which magma from a reservoir in the earth's crust rises to the surface.
The volcano is built up by the accumulation of material erupted through the conduit and increases in size as lava, cinders, and ash are added to its slopes.
www.gpc.edu /~pgore/students/w97/lehrer   (293 words)

  
 Schematic Diagram of a Strato Volcano   (Site not responding. Last check: 2007-11-05)
This is a schematic diagram of a strato volcano, intended to illustrate the different layers of different materials that comprise them.
Each eruption, regardless of what it produces, is fed from the magma chamber by a dike.
Most dikes come up through the center of the volcano and therefore most eruptions occur from at or near the summit.
volcano.und.nodak.edu /vwdocs/vwlessons/volcano_types/str_x.htm   (144 words)

  
 Mount Rainier, Washington, USA - IAVCEI "Decade Volcano" - Hazards, Seismicity, and Geophysical Studies
Mount Rainier was selected as a Decade Volcano because of the hazard it poses to surrounding, highly populated areas, especially the Seattle-Tacoma metropolitan area.
Because urban development of Mount Rainier's flanks and nearby valleys is still in early stages compared to many volcanos, we have a chance to mitigate the volcanic hazards through appropriate land use.
Recent and ongoing geologic mapping, both on the volcano and in the region, is improving additional details.
www.geophys.washington.edu /SEIS/PNSN/RAINIER/decadevolc.html   (1269 words)

  
 strato volcano research papers: essaysstar.com- the star website for essays, term papers, research papers, book reports
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www.essaysstar.com /cat/paper/452/strato-volcano-research-papers.html   (420 words)

  
 mindy/volcanoes
For our volcano webpage we will be talking about volcanoes and how they are formed, what kinds and how they explode, we shall also be talking about what causes them to explode.
Most volcanoes are caused by pressure in the the mantle against the crust.
The first clue that a volcano is about to erupt is that the trees would start die, you would have dirty water, smoke would really come out of the top of the volcano and when it erupts you get acid lake or rivers.
www.saskschools.ca /~scots/webpages6/mindylarae/mindy.html   (450 words)

  
 Volcano Pics
Licancabur Volcano, a strato volcano in the Atacama desert, in Chile
Pico de Teide is a dormant volcano on the Spanish Island of Tenerife, in the Canary Islands
A cinder cone in the crater of Mauna Loa
midju.tripod.com /1.htm   (435 words)

  
 BEST Strato Volcanoes   (Site not responding. Last check: 2007-11-05)
Strato Volcanoes comprise the largest percentage (~60%) of the Earth's individual volcanoes and most are characterized by...
volcanoes are composite volcanoes, also known as strato-volcanoes.
Unlike the shield volcanoes which are flat and broad, composite volcanoes...
www.freegripping.info /volcanoes/Strato-Volcanoes.html   (198 words)

  
 Joshua's Volcano Report
Strato volcanoes have caused the most casualties of any volcano.
There were many mudflows at Mt. Pinatubo, a strato volcano, because it was made up mostly of pyroclasts.
Volcanoes have had a huge impact not only on world formation, but also mythology, religion, and science.
www.hortonfamily.faithweb.com /index2.html   (2155 words)

  
 Connie Mendoza
Many of the world's great volcanoes, such as Vesuvius, Fujiyama, Egmont, and many others, are strato-volcanoes, with both lava flows and pyroclastic deposits.
Scoria cones are built around the top of the volcano and pyroclastic flow and fall deposits may have a wide distribution on the flanks.
In northern California and Oregon, many shield volcanoes have diameters of 3 or 4 miles and heights of 1,500 to 2,000 feet.
geosciences.ou.edu /~cmendoza/research.html   (3555 words)

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