fold-thrust hills

fold-thrust hills
   A landscape along an orogenic belt margin underlain dominantly by sedimentary rocks that have undergone intensive structural deformation via a series of sub-parallel thrust faults and associated folds. The thrust faults typically merge along a regional, subhorizontal displacement (decollement) at the basement contact. The land area displays considerable relief, characterized by cuestas, hogbacks, strike valleys, dip slopes, scarp slopes, and structurally-controlled hills; also known as an overthrust belt (e.g., the Wyoming overthrust belt).
   SW & GG

Glossary of landform and geologic terms. 2013.

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