describe the mowement of magma in the mantle.
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Decompression melting involves the upward movement of Earth's mostly-solid mantle. This hot material rises to an area of lower pressure through the process of convection. ... The rifting movement causes the buoyant magma below to rise and fill the space of lower pressure. The rock then cools into new crust.
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the magma creates movement of a circular motion called convection currents. In conclusion the plates move across the earth because of convection currents beneath the crust.
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