A review of the literature on distorted oolites and pseudoolites from german, French, Australian, and other localities, and an analysis of their shapes and the relations between distorted and normal oolites. It is pointed out that the shapes created by the distortion process are characteristic, independent of the mineralogic composition. A complete gradation from plastic deformation to rupture of rigid bodies is found with distortion localized in pockets or affecting isolated individuals. It is concluded that distortion was generated during sedimentation in agitated conditions and resulted from reciprocal impacts among oolites or pseudoolites at different stages of diagenetic induration.

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