Experimental folding of rocks under confining pressure: Part VII. Partially scaled models of drape folds

Drape folds are created experimentally at 0.5 kb confining pressure and displacement rates of 6.6 · 10 −3cm/sec by displacement of a steelblock forcing-assembly (2 by 3 by 12 cm) along lubricated, arcuate, precut surfaces into a veneer of two to six initially intact layers (variable thicknesses to nearly 1.3 cm by 11 cm long) of chalk (ductile), dolomite (brittle), lead (ductile), limestone (ductile), and sandstone (brittle). Various forcingmember configurations produce a wide variety of fault-fold systems, several of which are produced during a single test.