 Although cataclasites often lack an oriented fabric, some cataclasites are foliated.According to Sibson's 1975 classification scheme, these would be classified as mylonites although, through experiments, it was proven that some cataclastic mechanisms can form cataclasites with an oriented foliation solely due to brittle deformation.In a modification to the original definitions, the foliated fault rock would be still considered a cataclasite because it was created by cataclastic mechanisms.