Trough (geology)
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In geology, a trough generally refers to a linear structural depression that extends laterally over a distance, while being less steep than a trench.
A trough can be a narrow basin or a geologic rift.
There are various oceanic troughs, troughs found under oceans; examples include the rift along the mid-oceanic ridge and the Cayman Trough.
[edit] See also
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