The Formation of Tidal Creeks in a Salt Marsh: New Evidence from the Loyola Bay Salt Marsh,Rio Gallegos Estuary,Argentina |
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| Authors: | Perillo Gerardo M. E. Ripley Mark D. Piccolo M. Cintia Dyer Keith R. |
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| Affiliation: | (1) Instituto Argentino de Oceanografia, Av. Alem 53, 8000 Bahia Blanca, Prov. Buenos Aires, Argentina;(2) Departamento de Geologia, Universidad Nacional del Sur, San Juan 670, 8000 Bahia Blanca, Prov. Buenos Aires, Argentina;(3) Institute of Marine Studies, University of Plymouth, Drake Circus, Plymouth, Devon, PL4 8AA, United Kingdom;(4) Departamento de Geografia, Universidad Nacional del Sur, 12 de Octubre y San Juan, 8000 Bahia Blanca, Prov. Buenos Aires, Argentina |
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| Abstract: | A mechanism is proposed for the Formation of tidal creeks in salt marshes which is exemplified by the marshes of the Rio Gallegos estuary, Argentina. It has been observed that salt pans are elongated in the mean wind direction and are likely to extend by wave erosion of the surrounding marshes. Interconnection between the pans leads to growth and interaction with existing creeks and channels. Tidal exchange of the waters then promotes further erosion, or subsequently to filling in by the introduced suspended sediment. This mechanism contrasts with headward erosion by existing creeks. |
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| Keywords: | Argentina Loyola Bay Rio Gallegos estuary Salt marshes Salt pans Tidal channels |
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