Sedimentary structures

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  • Sedimentary Structures
definition
  • Sediments arranged in a definite pattern of organizations.Such as cross-bedding produced by migration of water ripples and dunes, graded bedding, a decrease in grain sizes going up in the bed that indicates diminishing force with time, etc.
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broader
Abstract from DBPedia
    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. 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.

    (Source: http://dbpedia.org/resource/Sedimentary_structures)