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ocean trenches

 Type(s): Concept

Alternative label (1)

  • deep-sea trenches
  • deeps (ocean)
  • trenches (seafloor)
  • troughs (seafloor)

Preferred label (1)

  • ocean trenches

Associations (3)

 

Hierarchy (Broader/Narrower)

Internal Occurrences (2)

  • Definition
    • Narrow, elongate depressions of the deep-sea floor associated with a subduction zone. They are oriented parallel to volcanic arcs and commonly to the edge of the continent, between the continental margin and the abyssal hills. [Glossary of Geology, 4th ed.]
  • Scope note
    • The topographic expression of subduction; the large linear depression of the oceanic lithosphere at a subduction zone. [Penguin Dict. of Geology, Kearey]
  
Object id: 1281
Item identifier(s):
[file:/apps/ontopia.net/tomcat/ontopia-5.3.0/topicmaps/ADL-FTT.xtm#id814]
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