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Unformatted text preview: Geosciences Unit 2 – Plate Tectonics I, Yelowstone Yellostone is Shaking • evidence indicates that there is a body of melted rock under the park • the rocks are anomalously hot at shallow depth • park recieves an abundant rainfall and snowfall ◦ the water circulates deeply through rocks broken by numerous earthquakes, and he water is heated from below ◦ in some places, the water is heated all the way to steam and emerges from holes (fumaroles) ◦ hot water bubbles to springs ▪ if the bubbling mixes in enough mud, then mud volcanoes develop • at times, cold colder on the top holds the water down putting pressure preventing boiling ◦ eventually the boiling manages to get rid of the water above, reducing the pressure, which causes more boiling, causing a geyser to erupt ◦ these geysers require heat, water, and a tight plubing system to hold the hot water and withstand the high pressures ◦ the volcanic rocks are rich of silica, which is dissolved and re-precipitated by the hot waters...
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This note was uploaded on 11/04/2010 for the course GEOSC 10 at Penn State.