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'''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).

'''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]] ([[Hawaii|Hawaiian]] [[volcano|volcanoes]]), [[Andesite]] ([[Andes Mountains]]), [[Dacite]] ([[Mt. St. Helens]]), or [[Rhyolite]] ([[Yellowstone National Park|Yellowstone]] [[Caldera]]).

[[category:geology]]

[[category:geology]]