Facies analysis, foraminiferal record and chronostratigraphy of Holocene sequences from Saltés Island (Tinto-Odiel estuary, SW Spain): The origin of high-energy deposits
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Abstract
A multidisciplinary analysis of Holocene sediments from La Cascajera (Tinto-Odiel estuary, SW Spain) has al lowed to differentiate five sedimentary facies (sandy tidal flat, clayey tidal flat, washover fan, salt marsh, edaphic horizon), according to their granulometric characteristics, internal structure, mineralogical composi tion, clay mineral assemblage and paleontological record. These data, coupled to 14C AMS dating, suggest an evolution from a sandy tidal plain to a chenier before 2100 cal yr BP. This initial chenier was partially eroded later by regional storms between 2100 cal yr BP and 1900 cal yr BP, leading to the deposition of two washover fans. These facies have been eroded in the last centuries by the action of an ebb-tide channel
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González-Regalado, M. L., Gómez, P., Ruiz, F., Cáceres, L. M., Clemente, M. J., Rodríguez Vidal, J., Toscano, A., Monge, G., Abad, M., Izquierdo, T., Campos, J. M., Bermejo, J., Martínez-Aguirre, A., Prudencio, M. I., Dias, M. I., Marques, R., & Muñoz, J. M. (2019). Facies analysis, foraminiferal record and chronostratigraphy of Holocene sequences from Saltés Island (Tinto-Odiel estuary, SW Spain): The origin of high-energy deposits. In Estuarine, Coastal and Shelf Science (Vol. 218, pp. 95–105). Elsevier BV. https://doi.org/10.1016/j.ecss.2018.12.005
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