Chapter 14 Part 2

Chapter 14 Part 2 - Chapter 14: Part Two Volcanic Hazards:...

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Chapter 14: Part Two Volcanic Hazards: - Volcanic mud flows- result from heavy rain and/or snow melt during an eruption o A.k.a. lahars Monitoring Volcanic Hazards: - Research to locate previous pyroclastic flows and lahars - Tiltmeters, measure the slope of a volcano to look for swelling - Monitor earthquake activity Deadliest Volcanic Eruptions: - United States: o May 18 th , 1980 – Mount St. Helens o 57 human fatalities - World: o 1815 – Mount Tambora (Indonesia) o 92,000 human fatalities - Oklahoma: o No volcanoes Igneous Features: - Igneous intrusion o rock formed beneath the Earth’s surface penetrates the crust – pluton - Scheme for classifying igneous intrusions o Batholith: large subterranean body of indefinite depth Important in mountain forming o Stock: Similar to batholith but much smaller o Laccolith: Slow-moving, viscous magma forced between horizontal layers of rock Builds up a mushroom-shaped mass o Volcanic Neck: Molten material hardened in volcanic vent
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This note was uploaded on 12/06/2011 for the course GEOG 1113 taught by Professor Bays during the Fall '10 term at Oklahoma State.

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Chapter 14 Part 2 - Chapter 14: Part Two Volcanic Hazards:...

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