Abby Budin, Amanda Miller and Nikki Prior
SCI 210 Geology
October 12, 2005
Form of Volcano: Slightly Sloped 6-12 degrees
Size: Up to 9000m high
Type of Magma: Basalt
Style of Activity: Gentle, some fire fountains
Examples: Hawaii
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Mauna Loa, the largest of
the shield volcanoes, is
13,677 feet above sea
level, which means it rises
over 28,000 feet above the
deep ocean floor, and
would be the worlds
tallest mountain if much
of it were not underwater.
Form of Volcano: Moderate slope
Size: 100-400m high
Type of Magma: Basalt or andesite
Style of Activity: Ejections of pyroclastic material
Examples: Paricutin, Mexico
Form of Volcano: Alternate layers of flows and pyroclastics
Size: 100-3500m high
Type of Magma: Variety of types of magmas and ash
Style of Activity: Often violent
Examples: Vesuvius, Mount St. Helens, Aconcagua
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Ash and gas spewed
Some falls or washes out, some shoot into stratosphere
Ash and gas in stratosphere causes haze
Haze shades and cools Earth enough to cause a climate change
Pinatubo in Philippines (1991)
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15 million tons of sulfur dioxide
Solar radiation declined 2-4%
Temperature rose again in 1994
Put more aerosols into the stratosphere than any other volcano in the 20th
century
http://earthbulletin.amnh.org/D/3/1/
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79 A.D.
Destroyed Roman cities of Pompeii, Herculaneum and several
neighboring villages near what is now Naples, Italy.
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Buried the villages 5-8m of hot ash
Inactive for 700 years prior to the eruption.
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1883
SW Pacific Ocean
Generated
tsunamis
Killed 36,000
people
Resources
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TITLE PAGE
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SHIELD
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http://www.taphilo.com/photo/pictures/Mount-Hood.jpg
ANCIENT VOLCANIC ERUPTIONS
Vesuvius:
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http://www.denney-net.co.uk/Kawaguchiko%20Mount%20Fuji.jpg
Mount Hood:
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http://pubs.usgs.gov/gip/volc/types.html
Mt. Fuji:
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http://vulcan.wr.usgs.gov/Imgs/Jpg/MedicineLake/glass_mtn.jpg
COMPOSITE
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http://vulcan.wr.usgs.gov/Volcanoes/Shasta/images.html
Medicine Lake:
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http://pubs.usgs.gov/gip/volc/types.html
Mount Shasta:
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http://www.windows.ucar.edu/tour/link=/earth/interior/shield_volcanos.html
http://library.thinkquest.org/17457/volcanoes/types.shield.php
CINDER CONE
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http://www.wallys.com/art/volcanoe.jpg
http://www.j-m-w-turner.co.uk/artist/gifetc/turner-vesuvius.jpg
http://faculty.ed.umuc.edu/~jmatthew/naples/eruption03.JPG
Krakatoa:
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http://hypatia.morelos.gob.mx/no3/imagenes/KRAKATOA.jpg