Cross-bedding is a sedimentary structure characterized by inclined layers within a horizontal bed, formed by the movement of sediment by wind or water. These structures are commonly found in environments like rivers, deltas, and deserts. Cross-bedding is important for interpreting past flow conditions, sediment transport, and the depositional environment in which the sediment was laid down.
Reference: Allen, J. R. L. (1982). Sedimentary Structures: Their Character and Physical Basis. Elsevier.