Secondary dune

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    Secondary dunes are also sometimes referred to as “rear dunes” and “back dunes” ( and “grey dunes” ( According to Davies (1980), the terms “primary dune” and “secondary dune” are generic terms with relatively specific meanings. He defined “primary dunes” as dunes derived primarily from the beach, and he identified two types, namely, free dunes with vegetation unimportant (e.g., transverse ridges) and impeded dunes with vegetation important (e.g., foredunes). Davies’ (1980, p. 157) “secondary dunes” are dunes derived from erosion of impeded primary dunes, and he documented two types, namely, (1) transgressive dunes (e.g., blowouts, parabolics, transgressive sheets) and (2) remnant dunes which are eroded remnants of vegetated primary dunes.
    Original languageEnglish
    Title of host publicationEncyclopedia of Estuaries
    EditorsMichael J. Kennish
    Place of PublicationDordrecht
    Number of pages2
    ISBN (Electronic)9789401788014
    ISBN (Print)9789401788007
    Publication statusPublished - 2016

    Publication series

    NameEncyclopedia of Earth Sciences Series
    ISSN (Print)1388-4360
    ISSN (Electronic)1871-756X


    • back dune
    • rear dune
    • grey dune
    • dune erosion


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