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The Corrubedo tidal inlet, Galicia, N.W. Spain: sedimentary processes and facies
Vilas, F.; Sopeña, A.; Rey, L.; Ramos, A.; Nombela, M.A.; Arche, A. (1988). The Corrubedo tidal inlet, Galicia, N.W. Spain: sedimentary processes and facies, in: de Boer, P.L. et al. (Ed.) Tide-influenced sedimentary environments and facies. Extended versions of papers presented at the Symposium on Classic Tidal Deposits, held August 1985 in Utrecht, Netherlands. pp. 183-200
In: de Boer, P.L. et al. (Ed.) (1988). Tide-influenced sedimentary environments and facies. Extended versions of papers presented at the Symposium on Classic Tidal Deposits, held August 1985 in Utrecht, Netherlands. D. Reidel Publishing: Dordrecht. ISBN 90-277-2622-1. ix, 530 pp., more
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Keyword
    Marine/Coastal
Authors  Top 
  • Vilas, F.
  • Sopeña, A.
  • Rey, L.
  • Ramos, A.
  • Nombela, M.A.
  • Arche, A.
Abstract
    The Corrubedo Tidal inlet is part of a beach barrier complex situated along a mesotidal coast in Galicia, N.W. Spain. The inlet is the only connection of an almost infilled lagoon with the open sea. The sediments are mainly sands with 28% to 59% of biogenic carbonate and minor amounts of clay and organic matter. The area was mapped in detail during several spring and neap-tide cycles, trenches were dug, and lacquer peels were obtained to study vertical facies relationships. Bedform maps and selected peels are shown. The tidal inlet area is exposed during low-water, except for the active channel. The external part is wave-dominated and the internal part tide-dominated but during high-water periods waves affect the whole area. Four characteristic sequences have been distinguished: permanently active channels, channels active only during extreme spring tides, abandoned channels and external tidal inlets. They have a complex internal organization without clear upwards fining or coarsening trends in grain-size. Two sedimentary features are particularly characteristic of the internal area: rhomboidal megaripples and beach lobes whose internal structure is described in detail.
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