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Erstellt von Maire Mohally
vor mehr als 10 Jahre
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Frage | Antworten |
Crust | 5-100km think. Contains minerals. Igneous, Sedimentary and Metamorphic |
Lithosphere | Moho, Upper Mantle and Crust |
Moho | Thin band near crust. Marks change between mantle and crust |
Asthenosphere | Upper Mantle. Flows like treacle |
Upper Mantle | Solid. Lowest part of lithosphere |
Lower Mantle | Solid and rocky. Silica rock |
Outer Core | 2200km thick. Iron and nickel. Liquid and metallic |
Inner Core | 1250km thick. Iron and nickel. Solid and metallic |
Oceanic Crust. SIMA | 6-12km thick. Dense rock, eg Basalt. Younger. Silicone and Magnesium |
Continental Crust SIAL | 40-60km think. Less dense, eg Granite. Older. Silicone and aluminium |
Continental Drift | Wegner. Large land mass: Pangaea. Identical fossils, matching mountains & matching coastline shape |
Sea Floor Spreading | Hess. Under water volcano. New crust. Existence of mid ocean ridge, varying sea floor age and similar glacial deposits |
Destructive | Oceanic-Continental Continental- Continental Oceanic-Oceanic |
O-C Collision | Oceanic slides under, heavier. Melt and Recycled. Explosive Volcanoes, eg Mt St Helens Earthquakes and trenches Pacific Ring of Fire |
O-O Collision | Trenches and Islands Heavier subducts. Deepest part of ocean. Islands from plums of magma strong earthquakes |
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