g16 - Earth Materials Geology Earth Plate tectonics Why...

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Earth Materials – Geology Earth Materials – Geology Plate tectonics Plate tectonics Why have all the mountains not worn away by now?
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Earth Structure Earth Structure Radius 6300-6400km Thin crust Mantle extends almost halfway to the centre The core makes up the rest
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Composition Composition Low density solid crust floating on an almost solid mantle But overall the Earth is dense The core must be very dense Probably made of dense metals nickel and iron Hot liquid outer core and solid inner core
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Rock Cycle Rock Cycle Weathering breaks down the rocks Erosion wears them into smaller pieces as they are transported towards the sea
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Deposition of sediments Deposition of sediments Most sediments settle in water Currents and waves form ripple marks Evidence can be found for this in the rock Ripple marks can be preserved in the rock
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Sedimentary rocks Sedimentary rocks Grand Canyon Youngest rocks at the top Rocks and fossils older as you go down
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This note was uploaded on 02/12/2011 for the course GEO 2200 taught by Professor Wolf during the Spring '08 term at University of Florida.

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g16 - Earth Materials Geology Earth Plate tectonics Why...

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