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Type Of Earth Layers

This Is About Earth Layers.
by

Brittney Looney

on 20 April 2010

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Transcript of Type Of Earth Layers

Types Of Earth Layers. Lithosphere Lithosphere is the solid part of the earth consisting of the crust and the outer mantle. The Lithosphere is the hard rocky outer shell of the Earth, compsed of the crust and uppermost mantle, that extends from the surface to a depth of up to 200 km at its deepest point. This is all the Earth's Layers. Also is showing Contenintal Crust and Oceantic Crust. Asthenosphere The Asthenosphere is a physical layer of the upper mantle which is directly below the Lithosphere. The Asthenosphere is composed of ultramafic rock and is believed to be roughly 5% molten. The Lithosphere, which includes the continental and oceantic crust, floats on the plastic-like asthenosphered. Mesophere The atomospheric layer between the Stratosphere and the Thermpsphere. Between 30 to 40 km in altitude. Crust The outer layer of the Earth. The Crust covers the mantle and is the Earth's hard outer shell. The Crust is very thin compared to other layers of the Earth. It floats on top the softer layer, which is the mantle.
Continental Crust Oceantic Crust The Continenal Crust is made up of mostly of Granite. Its
relativly thick compared to the oceantic crust. Most Earth Layers are made up of igneous, sedimentary, and metamorphic rocks.
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