Trough (geology)

Satellite image of the Cayman Trough
Bathymetric features of the Rockall Trough northwest of Scotland and Ireland

In geology, a trough is a linear structural depression that extends laterally over a distance. Although it is less steep than a trench, a trough can be a narrow basin or a geologic rift. These features often form at the rim of tectonic plates.

There are various oceanic troughs on the ocean floors.


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