Difference between revisions of "Lava"
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| − | '''Lava''' is molten rock from the [[Earth|Earth's]] | + | '''Lava''' is molten rock from the [[Earth|Earth's]] [[mantle]]. Lavas differ in chemical composition, but most forms of lava average 3000-4000 degrees [[Fahrenheit]]. Lavas are classified into the following categories based on their chemical composition: [[Basalt]] (Hawaiian volcanoes), [[Andesite]] ([[Andes]] mountains), [[Dacite]] ([[Mt. St. Helens]]), or [[Rhyolite]] ([[Yellowstone]] Caldera). |
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[[category:geology]] | [[category:geology]] | ||
Revision as of 16:53, May 13, 2007
Lava is molten rock from the Earth's mantle. Lavas differ in chemical composition, but most forms of lava average 3000-4000 degrees Fahrenheit. Lavas are classified into the following categories based on their chemical composition: Basalt (Hawaiian volcanoes), Andesite (Andes mountains), Dacite (Mt. St. Helens), or Rhyolite (Yellowstone Caldera).