L05_11-13_Sept_Earth_Interior(1)

The lithosphere is made up of the 8 major plates and 7

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Unformatted text preview: consistent with those inferred from geophysics. Ultra high pressure diamond anvil cells 22 Densi>es of common materials at 1 bar pressure Lead Iron Rock 23 Dynamical structure of Earth Composi>onal structure of Earth Mg, Fe Silicates Primarily Fe, minor Ni 24 Dynamical structure of Earth A view of Earth based on how resistant materials are to flowing or shearing. How does Earth’s interior move? Composi>onal structure of Earth A view of Earth based on what kind of rocks and minerals it’s made of. What is Earth made of? dynamical structure of Earth (a view of Earth based on how resistant materials are to flowing or shearing) Lithosphere: Rigid, briple surface layer, ~100 km thick. The lithosphere is made up of the ~8 major plates and ~7 minor plates Mg, Fe Silicates Primarily Fe, minor Ni 26 The lithospheric (or tectonic) plates dynamical structure of Earth (a view of Earth based on how resistant materials are to flowing or shearing) Lithosphere: Rigid, briple surface layer, ~100 km thick. The lithosphere is made up of the ~8 major plates and ~7 minor plates Asthenosphere: Weaker, more duc>le, layer below the lithosphere. This is the layer upon which tectonic plates ‘slide’. Extends from 100- 200 km to about 660 km depth. Rela>vely low seismic velocity. Mg, Fe Silicates Primarily Fe, minor Ni 28 Substance Viscosity acetone 0.0003 water 0.001 corn syrup 1.4 peanut buper 250 (Pascal*seconds) asthenosphere 7 x 1018 Lithosphere: Rigid, briple surface l...
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