Encyclopedia of Coastal Science

2019 Edition
| Editors: Charles W. Finkl, Christopher Makowski


  • Robert J. TurnerEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-93806-6_44

Formation and Distribution of Beachrock

Beachrock is defined by Scoffin and Stoddart ( 1987, p. 401) as “the consolidated deposit that results from lithification by calcium carbonate of sediment in the intertidal and spray zones of mainly tropical coasts.” Beachrock units form under a thin cover of sediment and generally overlie unconsolidated sand, although they may rest on any type of foundation. Maximum rates of subsurface beachrock cementation are thought to occur in the area of the beach that experiences the most wetting and drying-below the foreshore in the area of water table excursion between the neap low and high tide levels (Amieux et al. 1989; Higgins 1994). Figure 1 shows a beachrock formation displaying typical attributes.
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Authors and Affiliations

  1. 1.Interdisciplinary Arts and SciencesUniversity of WashingtonBothellUSA