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Duplexes are mechanisms by which slip is transferred from one detachment horizon to another.

Fault duplexes:

parts: flats, ramps, roof thrust, floor thrust, horses.hinterland dipping duplex. antiformal stack: characterized by folded thrusts. foreland dipping duplex.horse transport (ht) versus horse width (hw):

if ht < hw then get hinterland dipping duplex. if ht = get antiformal stack.if ht >> hw then get hinterland dipping duplex.

Fold duplexes:

note decreasing displacement gradient towards tip lines.with either fault propagation folds or with detachment folds.

Cleavage duplexes: likely a lower strain rate type of duplex.