Geological Glossary

Glossary of common terms used in geology, and related to earth sciences.
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Trench

This image shows a slice through the Earth at a convergent plate boundary.

Trench
Subduction zone

spacer image This view illustrates just one of the ways that plates behave when they collide. In this case, one plate is pulled beneath another forming a subduction zone. The long, narrow zone where the two plates meet is called a trench.


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