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Normal faulting of layers has resulted in lowering of the block to the right of the image. Note, however, the presence of an intensely deformed area along the fault zone, with evidence of plastic deformation. Cretaceous El Molino Formation, near Torotoro, Bolivia.
When sediment is still unconsolidated, it can deform under sudden solicitation (e.g., seismic shocks or load by additional sediment). Water expelled from intergranular pores can generate distinctive soft sediment deformation structures, known as ball-and-pillow structures or load structures, typically found at the contact between sandstone and mudstone beds.