Convolute lamination, its origin, preservation, and directional significance

Abstract

Abstract Convolute bedding occurs in both marine and nonmarine sediments of many environmental types. Although essentially syndepositional, its development generally lags behind deposition to a greater or lesser degree. Convolute laminations found in turbidite deposits are ascribed to the forces known to exist in turbidity currents. Convolutions are a fossil record of the forces (current action, loading, sudden regular releases of pressure) acting on a laminated bed during sedimentation. In addition to their origin and characteristics, their directional significance is also discussed.