Trough (geology)
# Trough (geology)

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.

## Examples of oceanic troughs

* Benue Trough
* Cayman Trough
* Hesperides Trough
* Kings Trough
* Mariana Trough
* Nankai Trough
* Northumberland Trough
* Okinawa Trough in the East China Sea
* Rockall Trough and others along the rift of the mid-oceanic ridge
* Salton Trough
* South Shetland Trough
* Suakin Trough in the Red Sea
* Timor Trough
