Sedimentary structures

Megaripple/dune, formed in the upper flow regime, from Utah

Sedimentary structures include all kinds of features in sediments and sedimentary rocks, formed at the time of deposition.

Sediments and sedimentary rocks are characterized by bedding, which occurs when layers of sediment, with different particle sizes are deposited on top of each other.[1] These beds range from millimeters to centimeters thick and can even go to meters or multiple meters thick.

Sedimentary structures such as cross-bedding, graded bedding, and ripple marks are utilized in stratigraphic studies to indicate original position of strata in geologically complex terrains and understand the depositional environment of the sediment.

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