No. 96 Fault bend fold with klippe & fenster

Last known location: Eau Claire, WI

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This wooden block features a gently dipping stratified sequence of cherry, maple, mahogany, purple heart, green poplar, and Brazilian cherry that are cut by a thrust fault. The hanging wall is deformed into a fault-bend fold over a flat-ramp-flat transition in the thrust fault. Strata are incised by V-shaped, river cut valleys that downcut through the thrust plane in places, resulting in a klippe (stranded hanging wall block) and a fenster (erosional hole exposing footwall strata). The base of this large block measures roughly 4 1/4 by 7 1/2 inches and is finished with linseed oil and beeswax.

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