A simple fold in rock layers where the strata are bent in only one direction, typically from horizontal to inclined, then back to horizontal. This creates a step-like structure in the landscape.
From Greek 'monos' (single) and 'klinein' (to lean), meaning 'single lean.' The term emerged in geological literature in the late 19th century to describe folds that differ from the paired anticline-syncline pattern.
The Colorado Plateau is famous for its dramatic monoclines - the East Kaibab Monocline creates the spectacular cliff face on the east side of the Grand Canyon, where rock layers are bent upward like a giant stone ramp! These structures often create some of the American Southwest's most iconic landscapes, including the Waterpocket Fold in Capitol Reef National Park.
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