Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Sedimentary structures are those structures formed during sediment deposition. 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. There are two kinds of flow structures: bidirectional (multiple directions, back-and-forth) and unidirectional.
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