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Natural Disasters By: Patrick L. Abbott. Chapter 7 Volcanism and Plate Tectonics.

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Presentation on theme: "Natural Disasters By: Patrick L. Abbott. Chapter 7 Volcanism and Plate Tectonics."— Presentation transcript:

1 Natural Disasters By: Patrick L. Abbott

2 Chapter 7 Volcanism and Plate Tectonics

3 Overview zPlate-Tectonic Setting of Volcanoes zVolcanism at Spreading Centers zVolcanism at Subduction Zones zKiller Events and Processes at Subduction- Zone Volcanoes zHot Spots

4 Overview (cont.) zVolcanism at Continental Hot Spots zGigantic Intraplate Volcanic Eruptions zVolcano Monitoring and Warning

5 Plate-Tectonic Setting of Volcanoes zLocations zActivity

6 Volcanism at Spreading Centers zIceland yFissure Eruption of 1783 yJokulhlaup of 1996 zKiller Lakes of Cameroon, Africa yFailed rifts

7 Volcanism at Subduction Zones zCascade Range, Pacific Northwest yMount St. Helens, Washington, 1980 yLassen Peak, California, yMount Shasta, California yMount Rainier, Washington

8 Killer Events and Processes at Subduction-Zone Volcanoes zPyroclastic Flows yMount Mayan, Philippines, 1968 yMount Unzen, Japan, 1991 yMont Pelee, , yMont Pelee, Martinique, 1902 zLahars yNevado Del Ruiz, Columbia, 1985

9 Hot Spots zVolcanism at Oceanic Hot spots yHawaii yKiller Event of 1790

10 Volcanism at Continental Hot Spots zYellowstone National Park yEruptive Sequence xResurgent domes

11 Gigantic Intraplate Volcanic Eruptions zLong Valley, California yCharacteristics yHistory

12 Volcano Monitoring and Warning zSigns zProgram zBenefits


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