Engineering geology

Convolution

Convolute lamination or convolute bedding is a special type of intraformational deformation layering or lamination, characterized by meandering and winding laminates within a layer in concordant sequence with roof and floor layers.

Convolution

Convolution is generally the most beautiful and most commonly developed in fine-grained sandy and siltous sediments.

The origin of a convolution can be different. It arises as a result of hydroplastic deformation of still unhardened sediments under the influence of strong water currents flowing above such sediments (Sanders, 1965).

Convolution

In addition, it can also occur in the post-sedimentation phase as a result of hydroplastic deformations due to the sudden displacement of pore water during fluidization and liquefaction (Lowe, 1975), but also as a consequence of injection (Reineck & Singh, 1973) and the sudden release of gases from the sediment.

Convolution

Images by E.Babajic

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