Soft-sediment deformation · Cross section

Slump folds

Tight folds in a sediment layer bounded by undeformed beds.

How it forms: Sediment on a slope fails and moves downslope under gravity.
Typical setting: Sloping depositional surfaces
Way up: Not effective as way-up indicators and easily confused with tectonic folds.
Flow direction: Can indicate paleoslope direction once way-up is known from other structures.

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