Benioff zone

noun Ben·i·off zone \ ˈbe-nē-ˌȯf- \

Definition of Benioff zone

geology
:a seismically active underground area within a subduction zone
  • Researchers say today's type of quake …, or Benioff zone, earthquake, is the most frequent and potentially most benign of the types of earthquake in the region.
  • —Carol Kaesuk YoonNew York Times1 Mar. 2001
  • A seismic zone dipping beneath a continental margin or an island arc, and having a deep-sea trench as its surface expression, is called a Benioff zone, after Hugo Benioff, the American seismologist who first described the feature.
  • —Sheldon Judson and Marvin E. KauffmanPhysical Geology, 8th Edition1990

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Origin and Etymology of benioff zone

after Victor Hugo Benioff †1968 American seismologist
Note: The existence of such areas was suggested by Benioff in several papers, such as “Seismic Evidence for the Fault Origin of Oceanic Deeps,” Geological Society of America Bulletin, vol. 60, no. 12 (1949), pp. 1837-56, and “Seismic Evidence for Crustal Structure and Tectonic Activity,” in Arie Poldervaart, editor, Crust of the Earth—A Symposium, Geological Society of America Special Papers, vol. 62 (1955), pp. 61-74.


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