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Geochemistry (Earth Layers (Atmosphere- 100km, composed of nitrogen,…
Geochemistry
Earth Layers
Atmosphere- 100km, composed of nitrogen, oxygen and argon, gas, density of 0.001gcm-3
Hydrosphere- ground level, composed of water sodium and potassium, liquid, density of 1gcm-3
Crust- 11km, composed of rock and the lithophile elements, solid, density of 3gcm-3, above the MOHO
Mantle- 50km, composed of rock, plastic state, density of 5gcm-3, below the MOHO
Outer core- 2900km, composed of iron and nickel (siderophile), liquid, density of 10gcm-3
Inner core- 5100km, composed of iron and nickel, solid, density of 13gcm-3
Goldschmidt system
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Atmophile- on or above the surface because they occur in liquids and gas at temperature and pressure e.g hydrogen and helium
Arranges elements into 4 categories and helps to explain why the earth has a layered shell structure
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