Deep-sea trenches

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Definition of Deep-sea trenches:
Long, narrow and deep topographic depressions associated with volcanic arcs that together mark a collisional zone where one lithospheric plate is overriding another. [1]
This is the common definition for Deep-sea trenches, other definitions can be discussed in the article


  1. Pinet P.R. 1998.Invitation to Oceanography. Jones and Barlett Publishers. p. 508