transverse canyon

A transverse canyon is a gorge or water gap that cuts across underlying geological structures, such as ridges, rather than following their trend. This occurs when a river erodes through a resistant ridge.

There are two primary ways transverse canyons form:
1. Antecedent Canyons: Valleys that existed before tectonic uplift created the geological structures. The river's erosive power keeps pace with the uplift, cutting through the rising structures.
2. Superimposed Canyons: Rivers develop drainage patterns on a layer of younger sediment covering older, complex geological structures. When uplift occurs, the rejuvenated rivers cut down through the sediment and then across the underlying structures, forming canyons.

The Grand Canyon is a famous example of a canyon formed by uplift and river erosion.1