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USGS CMG InfoBank Geology School: volcanic ash

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Title Comment Keywords
Rift Zone 02:59 - 04:01 (01:02) / 1.4 MB "plate tectonics", "convergent plate margin", Iceland, "mid-Atlantic ridge", "mid-oceanic ridge", rift, landscape, earthquake, geyser, "hot spring", crust, "lava flow", "volcanic ash", basalt, fissure, volcano, plate, magma, "divergent plate"
Volcanism 30 minutes / n.a. volcano, eruption, magma, lava, vent, "volcanic ash", temperature, gas, viscosity, "shield volcano", pumice, dome, "composite volcano", "plate tectonics"
Volcanoes and Magma 02:19 - 03:46 (01:27) / 1.9 MB "James Sadd", volcano, magma, "interior of the Earth", eruption, "volcanic gas", "volcanic ash", atmosphere, climate, Sun, "sea floor", "mid-oceanic ridge", crust
Andesitic Lavas Cause Explosive Eruptions 08:40 - 09:34 (00:54) / 1.2 MB "James Sadd", eruption, "composite volcano", "lava flow", basalt, andesite, silica, temperature, viscosity, magma, gas, pressure, "volcanic ash", pumice
Cinder Cones 11:10 - 11:51 (00:41) / 0.9 MB "James Sadd", volcano, "cinder cone", cinder, "composite volcano", "shield volcano", "volcanic ash", "lava flow", eruption
Volcanic Domes 14:07 - 14:44 (00:37) / 1.3 MB "volcanic dome", "composite volcano", "Mount Saint Helens", eruption, crater, dome, "volcanic ash"
Mt. Katmai Eruption 16:39 - 17:50 (01:11) / 2.0 MB eruption, "Mount Katmai", Alaska, "volcanic ash", pumice, gas, volcano, "National Geographic Expedition", "Robert Fiske Griggs", vent, fumerole, swamp, woodland, "Valley of Ten Thousand Smokes"
Gravity Measurements 22:48 - 23:44 (00:56) / 1.4 MB "Andrew Goodliffe", vent, "Mount Katmai", Noverupta, "volcanic ash", pumice, gravity, geophysicist, mass, volcano
Ore Deposits and Volcanoes 23:44 - 24:24 (00:40) / 1.4 MB geologist, "Mount Katmai", "ore deposit", volcano, fumerole, gas, "Valley of Ten Thousand Smokes", eruption, stream, "volcanic ash", sublimation
Conclusion 25:34 - 26:56 (01:22) / 1.2 MB "James Sadd", "sedimentary rock", "clastic sediment", "Grand Canyon", "Colorado River", sand, mud, "volcanic ash", "lava flow", "ocean basin", deformation, mountain, orogeny, "Mazatzal Mountains", erosion, uplift, limestone, shale, "sea level rise", flood, volcanism, deposition, unconformity, ocean, preservation
Desert Dust 12:58 - 13:42 (00:44) / 1.2 MB desert, wind, "desert dust", rock, mineral, plant, animal, ash, detritus, "volcanic ash", atmosphere, storm
Depositional Environment 18:26 - 19:30 (01:04) / 1.4 MB "Chester C. Langway Jr.", "Ice Age", landscape, glacier, "glacial ice", snowfall, deposition, "glacial environment", "ice sheet", "atmospheric process", atmosphere, pollen, "volcanic ash", meteorite, "ancient air bubble", climate
Geology School Keywords
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URL: http://walrus.wr.usgs.gov/infobank/programs/html/school/keypage/volcanic_asher.html
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Page Last Modified: Thu Oct 31 04:24:53 PDT 2013  (chd)