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Keywords
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Dr. Virginia Dale, Mount St. Helens, soil, erosion, weathering, volcanic eruption, volcano, mathematical ecology, Oak Ridge National Laboratory, argonaut, soil formation, energy crop, chemical weathering, oxidation, iron, rust, mechanical weathering, abrasion, waves, sediment, wind, water, gravity, agent, glacier, Great Lakes, surface water, river, Grand Canyon, groundwater, cave, landform, human activity, construction, mining, acid rain, mass movement, landslide, ecology, animal, regrowth, horizon, soil profile, surface litter, topsoil, subsoil, bedrock, parent material, decomposition, change over time, soil analysis, carbon, soil quality, soil fertility, soil sample, switchgrass, ethanol, biofuel, renewable resource, carbon dioxide, energy crop, ORNL, grain size, soil texture, supercomputer, Jaguar, computer modeling, data
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