Mt. St. Helens

Go to slide: 1: Volcanoes & Volcanic Rocks 2: Rock types 3: Igneous rocks 4: Devils Tower, Wyoming 5: Columnar basalt 6: Paricutin, Mexico 7: Cinder Cone, Lake Turkana, Kenya 8: Aleutian Island, Alaska 9: Cotopoxi Volcano, Ecuador 10: Skjaldbreidur Shield Volcanoe, Iceland 11: Popocateptl, Mexico 12: Anak Krakatoa 13: Valley of the 10,000 Smokes, Alaska 14: Valley of the 10,000 Smokes, Alaska 15: Valley of the 10,000 Smokes, Alaska 16: Valley of the 10,000 Smokes, Alaska 17: Layers of ash, Iceland 18: Ash deposits, Iceland 19: Krafla Volcanics, Iceland 20: Fracture in Iceland 21: Laki Fissure, Iceland 22: Volcanic Ridge, East African Rift, Kenya 23: Lava Flow, Iceland 24: Basalt flows, Hawaii 25: Lava fountain, Hawaii 26: Pahoehoe flows, Galapagos, Ecuador 27: Obsidian domes, Inyo, California 28: Basalt flows at Idaho Falls 29: Pillow lavas 30: Pillow lavas 31: Pillow lavas, Reykjanes Penninsula, Iceland 32: Pompeii today 33: Pompeii victim - mummified 34: Mt. St. Helens 35: Mt. St. Helens mudflow 36: Nevada del Ruiz 37: Town destroyed by Nevada del Ruiz

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