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| Back to the Printout | Label Seafloor Spreading |
Plate Tectonics Page |
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Lithosphere - the crust plus the rigid, upper mantle. Lower Mantle (semi-rigid) - the deepest parts of the mantle, just above the core. Magma - molten rock withing the Earth's mantle. In seafloor spreading, magma moves from the asthenosphere to the crust. Ocean - large bodies of water sitting atop oceanic crust. Oceanic Crust - thin parts of the Earth's crust located under the oceans. Oceanic Ridge - newly-formed region of the oceanic crust. Upper Mantle (rigid) - the uppermost part of the mantle, part of the lithosphere. Asthenosphere = Upper Mantle (flowing) - the lower part of the upper mantle that exhibits plastic (flowing) properties. It is located below the lithosphere (the crust and upper mantle). |
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