Planet Earth 5 - Chapter 9: Volcanic Eruptions Volcano: an...

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Chapter 9: Volcanic Eruptions Volcano: an erupting vent through which molten rock reaches the Earth’s surface, or a mountain built from the products of eruption Lava: molten rock that has extruded out of the Earth’s surface Lava flows: moving masses of molten lava -not all lava flows are the same -lava, pyroclastic debris, gas, and aerosols erupt at the Earth’s surface Lava Tube: an insulated, tennel-like conduit through which laval makes within a flow Pahoehoe: flows with warm, pasty surfaces wrinkle into smooth, glassy, rope-like ridges Rhyolite lava flow: most viscous & silicic -accumulates in a lava dome Volcanic ash: tiny glass shardes formed when a fine spray of exploded lava freezes instant upon contact with the atmosphere Pyroclastic debris: all fragmental material erupted from a volcano Lapilli: pea-to-plum sized fragments of volcanic ash
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This note was uploaded on 02/08/2012 for the course GEOLOGY 460:103 taught by Professor Feigenson during the Fall '10 term at Rutgers.

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Planet Earth 5 - Chapter 9: Volcanic Eruptions Volcano: an...

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