Zona de Benioff-Wadati

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(ben ē’ of Wa d∂’ tē) A dipping zone tens of kilometers thick containing earthquake hypocenters lying along the top (and base) of a subducting plate, in some places extending to 700 km (see Figure P-4). Where plates of the Earth’s lithosphere converge so that one plate moves downward beneath another; earthquakes result from the plunging plate. This type of plate boundary is also called a Benioff-type or B-type collision, or Benioff or Wadati zone. Named for Hugo Benioff (1899–1968) and Kiyoo Wadati, American and Japanese seismologists.