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solid rocks incorporated into the magma from along the conduit or reservoir, called xenoliths or inclusions; and dissolved gases. Magma collects inside a volcano's magma chamber before it erupts (see diagram).
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www.pbs.org/wgbh/nova/volcano/anat_11.html
www.pbs.org/wgbh/nova/volcano/anat_11.html
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Molten rock below the surface of the Earth that rises in volcanic vents is known as magma, but after it erupts from a volcano it is called lava.
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vulcan.wr.usgs.gov/Glossary/LavaFlows/description_lava_...
vulcan.wr.usgs.gov/Glossary/LavaFlows/description_lava_flows.html
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Other Free Encyclopedias :: Science Encyclopedia :: Science & Philosophy - Stem Cells to Zooplankton :: Volcano - Where Volcanoes Develop, The Origin Of Magma, Types Of Volcanic Eruptions, Different Kinds Of Volcanic Structures...
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science.jrank.org/pages/7252/Volcano-origin-magma.html
science.jrank.org/pages/7252/Volcano-origin-magma.html
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A mechanism by which a basaltic magma beneath a volcano could change to andesitic magma and eventually to rhyolitic magma through crystal fractionation, is provided by Bowen's reaction series, discussed next.
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www.tulane.edu/~sanelson/geol204/volcan&magma.htm
www.tulane.edu/~sanelson/geol204/volcan&magma.htm
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Decompression Induced Crystallization of Basaltic Andesite Magma: Constraints on the Eruption of Arenal Volcano, Costa Rica. ... Arenal Volcano in Costa Rica has continuously erupted since 1968 evolving in a complex fashion involving crystal fractionation, magma mixing, degassing, and wall-rock interaction (Reagan et...
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www.agu.org/meetings/fm04/fm04-sessions/fm04_V33B.html
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The Geochemical and Petrological History of Arenal Volcano, Costa Rica ... The purpose of this study is to examine the geochemical evolution of the magma erupting at Arenal. Tephras from Arenal divide into two groups on the basis of SiO2 content. Mafic tephras have up to 53 wt.% SiO2, whereas felsic tephras have at least 56...
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www.agu.org/meetings/fm04/fm04-sessions/fm04_V23D.html
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This website is a comprehensive educational resource that describes the science behind volcanoes and volcanic processes ... VOLCANO LANDFORMS ... VOLCANO CROSSWORD...
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www.geology.sdsu.edu/how_volcanoes_work/
www.geology.sdsu.edu/how_volcanoes_work/
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The Italian volcano's rising magma reservoir may make severe Pompeii-like eruptions less likely in the future, new research says. ... The finding may be good news for some three million people living under the active volcano's shadow in Italy's Campania region, ... Magma reservoirs hold a replenishing supply of lava,
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news.nationalgeographic.com/news/2008/09/080910-vesuviu...
news.nationalgeographic.com/news/2008/09/080910-vesuvius-eruption.html
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In the town of Santa Venerina, at the foot of the volcano, several people suffered minor injuries as they scrambled for safety, said Carmela Floreno, a civil defense official in nearby Catania. ... The volcano erupted on Sunday, sending streams of lava down the mountain and causing ash to rain from the sky through Monday.
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www.cbsnews.com/stories/2002/10/28/world/main527153.sht...
www.cbsnews.com/stories/2002/10/28/world/main527153.shtml
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