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Chapter 4 - Volcanism & Extrusive Rocks

Chapter 4 - Volcanism & Extrusive Rocks. Photo Credit: S. Young. Effects on Humans. The Growth of Hawaii Geothermal Energy Effect on Climate Volcanic Catastrophes Eruptive Violence and Physical Characteristics of Lava. Cascades Volcanoes. Mt. St. Helen’s Eruption Sequence.

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Chapter 4 - Volcanism & Extrusive Rocks

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  1. Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young

  2. Effects on Humans • The Growth of Hawaii • Geothermal Energy • Effect on Climate • Volcanic Catastrophes • Eruptive Violence and Physical Characteristics of Lava

  3. Cascades Volcanoes

  4. Mt. St. Helen’s Eruption Sequence

  5. Gary Rosenquist Photo Sequence - Mt. St. Helen’s, May 18, 1980 ~8:27 PDT 8:32:47.0 PDT 8:32:49.2 PDT 8:32:53.3 PDT 8:33:03.7 PDT 8:33:18.8 PDT

  6. Mt. St. Helen’s Animation

  7. Mt. St. Helen’s Plinian Eruption Column - May 18, 1980 From: USGS http://vulcan.wr.usgs.gov/

  8. Mt. St. Helen’sMay 18, 1980 Devastation

  9. Post May 18, 1980 Crater and Resurgent Dome From: USGS http://vulcan.wr.usgs.gov/

  10. Caldera Collapse

  11. Crater lake - Wizard Island - 5 kBP Eruption Mt. Mazama Crater lake, Wizard Island, OR 8 kBP Eruption Mt. Mazama From: http://www.igoweb.org/~wms/personal/photos/2000/craterLake/

  12. Pyroclastic Flows

  13. St. Pierre Devastation, Mt. Pelee, Martinque, May 8, 1902

  14. Extrusive Rocks and Gases • Scientific Investigation of Volcanism • Gases Extrusive Rocks

  15. Volcanic Textures Table

  16. Obsidian Hand Specimen

  17. Andesite Hand Specimen

  18. Andesite Photomicrograph

  19. Vesicular Basalt

  20. Pumice

  21. Volcanic Bombs

  22. Volcanic Tuff Photomicrograph

  23. Types of Volcanoes • Shield Volcanoes • Cinder Cones • Composite Volcanoes • Volcanic Domes

  24. Basic Volcano Types

  25. Karymsky Volcano, Kamchatka, Russia

  26. Shield Volcano

  27. Basaltic Fire Fountaining and Lava Flows

  28. Summit of Mauna Loa

  29. Pahoehoe Lava Flow

  30. Aa Lava Flow

  31. Spatter Cone

  32. Olympus Mons, Mars

  33. Volcanic Eruption, Io

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