Geometry
Fold and thrust belts are formed of a series of sub-parallel thrust sheets, separated by major thrust faults. As the total shortening increases in a fold and thrust belt, the belt propagates into its foreland. New thrusts develop at the front of the belt, folding the older thrusts that have become inactive. This sequential propagation of thrusts into the foreland is the most common. Thrusts that form within the belt rather than at the thrust front are known as "out-of-sequence".Map view
In map view, fold and thrust belts are generally sinuous rather than completely linear. Where the thrust front bulges out in the direction of tectonic transport, a ''salient'' is formed. Between the bulges the areas are known as ''recesses'', ''reentrants'' or sometimes ''embayments''.Thrust belts
Africa
Asia
Australia
Europe
North America
Much of this table is adapted from Nemcok ''et al.'', 2005Nemcok, M., Schamel, S. & Gayer, R. 2005. Thrustbelts - Structural Architecture, Thermal Regimes and Petroleum Systems. Cambridge University PressSouth America
References
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