Soft Sediment Deformation

Soft sediment deformation (SSD) is widespread in many sedimentary successions. Here some good examples of the main types of sediment deformation as discussed in Ortner (2007). The structures are ordered tentatively from early to late in relation to lithification of sediments.

Subsurface fluidization - primary sedimentary structures destroyed
- Dykes
- Sills
- Intrastratal fluidization in graded beds
- Intrastratal fluidization in conglomerate-sandstone-marl multilayers

Hydroplastic deformation - primary sedimentary structures preserved and deformed
- mullions
- soft-sediment folds, small and large

Semi-brittle deformation

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