deep-sea trench

Related Overviews


'deep-sea trench' can also refer to...


More Like This

Show all results sharing this subject:

  • Earth Sciences and Geography


Show Summary Details

Quick Reference

Narrow, elongate, steep-sided and often rock-walled depression that is 3000m or more deeper than the adjacent deep-sea floor. Trenches are the deepest parts of the ocean, the greatest known depth being that of the Challenger Deep in the Marianas Trench where a depth of 11022 m has been recorded. Trenches usually mark the position of a destructive plate margin, where the sea floor is slowly being destroyed by subduction.

Subjects: Earth Sciences and Geography.

Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.