http://www.volcanoworld.org/vwdocs/vwlesso
ns/lessons/Metrocks/Metrocks2.html
Granite: Igneous, Intrusive
Obsidian - volcanic glass
that is formed by very
rapid cooling of lava
Pumice is lava that had a lot of gases in it and
cooled quickly on the surface of the Earth.
Breccia composed of sharp angled fragments
Rock Salt: This is an evaporate after the water evaporated from saltwater.
Fossillferous Limestone contains fossils of
various fresh and or salt water shell fish.
http://www.cliffsnotes.com/study_guide/History-of-Physical-Geology.topicArticleId9605,articleId-9456.html
TYPE 2
TYPE 1
TYPE 3
Mt. Etna, Italy
Shield Volcano
1943 Eruption of Paricutin – Mexico
Cinder cone Volcano
Mt. St. Helens, 1982
Composite Volcano
LAND
AIR
WATER
Lava
Poisonous gasses
Hot Springs
Volcanic Ash
Acid Rain
Geysers
Landslides
Haze
Deep Sea Vents
Mudflows
Lower Temps
Fumaroles