Continent-sized anomalous zones with low seismic velocity at the base of Earth ’ s mantle

@inproceedings{Garnero2016ContinentsizedAZ,
  title={Continent-sized anomalous zones with low seismic velocity at the base of Earth ’ s mantle},
  author={Edward J. Garnero and Allen Mcnamara and Sang-Heon Shim},
  year={2016}
}
481 The movement of Earth’s tectonic plates, which includes divergence at mid-ocean ridges to create new crust and lithosphere, as well as convergence and consumption of older plates into Earth’s interior at subduction zones, is related to convective motions of the underlying mantle rock over geologic timescales. The mantle, which extends to about 2,900 km depth, just less than halfway to Earth’s centre (near 6,400 km), actively convects because it is heated from below, by the hot liquid outer… CONTINUE READING

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