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Earth’s Mantle Melting and Volcanism
2014Convection currents inside the Earth’s asthenosphere will cause instability at shallow depths in the mantle. Rising material and subsequent decompression melting will form hot, upwelling mantle plumes or diapirs. This phenomenon is more common on slow spreading ridges (total rate 5 cm/yrs) spreading ridge segments with their extensive fissural ...
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Mantle Convection and Melt Segregation
2001The Earth began to accrete some 4.5 billion years ago by the accumulation of impacting planetesimals of various sizes. The impacting bodies converted their gravitational and kinetic energies into heat which probably produced initially a large-scale melting condition of the planet. Whether or not the primordial Earth consisted of a gigantic magma ocean,
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