Abby Budin, Amanda Miller and Nikki Prior

SCI 210 Geology

October 12, 2005

Form of Volcano: Slightly Sloped 6-12 degreesForm of Volcano: Slightly Sloped 6-12 degrees

Size: Up to 9000m highSize: Up to 9000m high

Type of Magma: BasaltType of Magma: Basalt

Style of Activity: Gentle, some fire fountainsStyle of Activity: Gentle, some fire fountains

Examples: HawaiiExamples: Hawaii

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 slopeForm of Volcano: Moderate slope

Size: 100-400m highSize: 100-400m high

Type of Magma: Basalt or andesiteType of Magma: Basalt or andesite

Style of Activity: Ejections of pyroclastic materialStyle of Activity: Ejections of pyroclastic material

Examples: Paricutin, MexicoExamples: Paricutin, Mexico

Form of Volcano: Alternate layers of flows and Form of Volcano: Alternate layers of flows and pyroclasticspyroclastics

Size: 100-3500m highSize: 100-3500m high

Type of Magma: Variety of types of magmas and ashType of Magma: Variety of types of magmas and ash

Style of Activity: Often violentStyle of Activity: Often violent

Examples: Vesuvius, Mount St. Helens, AconcaguaExamples: Vesuvius, Mount St. Helens, Aconcagua

Ash and gas spewedAsh and gas spewed Some falls or washes out, some shoot into Some falls or washes out, some shoot into

stratospherestratosphere Ash and gas in stratosphere causes hazeAsh and gas in stratosphere causes haze Haze shades and cools Earth enough to cause a Haze shades and cools Earth enough to cause a

climate changeclimate change Pinatubo in Philippines (1991)Pinatubo in Philippines (1991)

15 million tons of sulfur dioxide15 million tons of sulfur dioxide Solar radiation declined 2-4%Solar radiation declined 2-4% Temperature rose again in 1994Temperature rose again in 1994 Put more aerosols into the stratosphere than any other Put more aerosols into the stratosphere than any other

volcano in the 20volcano in the 20thth century century

http://earthbulletin.amnh.org/D/3/1/http://earthbulletin.amnh.org/D/3/1/

79 A.D.79 A.D. Destroyed Roman cities of Pompeii, Herculaneum Destroyed Roman cities of Pompeii, Herculaneum

and several neighboring villages near what is now and several neighboring villages near what is now Naples, Italy.Naples, Italy. Buried the villages 5-8m of hot ashBuried the villages 5-8m of hot ash

Inactive for 700 years prior to the eruption.Inactive for 700 years prior to the eruption.

18831883 SW Pacific SW Pacific

OceanOcean Generated Generated

tsunamistsunamis Killed 36,000 Killed 36,000

peoplepeople

ResourcesResources TITLE PAGE

http://www.wallys.com/art/volcanoe.jpg SHIELD

http://www.windows.ucar.edu/tour/link=/earth/interior/shield_volcanos.html http://library.thinkquest.org/17457/volcanoes/types.shield.php

CINDER CONE http://pubs.usgs.gov/gip/volc/types.html

Mount Shasta: http://vulcan.wr.usgs.gov/Volcanoes/Shasta/images.html

Medicine Lake: http://vulcan.wr.usgs.gov/Imgs/Jpg/MedicineLake/glass_mtn.jpg

COMPOSITE http://pubs.usgs.gov/gip/volc/types.html

Mt. Fuji: http://www.denney-net.co.uk/Kawaguchiko%20Mount%20Fuji.jpg

Mount Hood: http://www.taphilo.com/photo/pictures/Mount-Hood.jpg

ANCIENT VOLCANIC ERUPTIONS Vesuvius:

http://www.j-m-w-turner.co.uk/artist/gifetc/turner-vesuvius.jpg http://faculty.ed.umuc.edu/~jmatthew/naples/eruption03.JPG

Krakatoa: http://hypatia.morelos.gob.mx/no3/imagenes/KRAKATOA.jpg