Multiproxy reconstruction of Miocene-Holocene environmental changes in an estuarine succession of the Tinto River (SW Spain)
Reconstrucción multiescalar de los cambios ambientales del Mioceno-Holoceno en una sucesión de estuario en el Río Tinto (SW España)
Edith Xío Mara García1,*, Marta Arroyo2, María Luz González-Regalado2, Juan Manuel Muñoz3, Javier Bermejo4, Joaquín Rodríguez Vidal2, Luis Miguel Cáceres2, Lucía Fernández4, Manuel Abad5, Tatiana Izquierdo5, Antonio Toscano2, Paula Gómez2, Verónica Romero2, Gabriel Gómez2
1 Departamento de Estudios del Agua y de la Energía, Centro Universitario de Tonalá, Universidad de Guadalajara, Nuevo Periférico. 555, Ejido San José, Tateposco. 45425-Tonalá, Jalisco, México.
2 Departamento de Ciencias de la Tierra, Universidad de Huelva, Avda. Tres de Marzo, s/n, 21071, Huelva, Spain.
3 Departamento de Estadística e Investigación Operativa, Universidad de Sevilla. Avda. Reina Mercedes, s/n. 41012, Sevilla, Spain.
4 Departamento de Historia, Geografía y Antropología, Universidad de Huelva, Avda. Tres de Marzo, s/n, 21071, Huelva, Spain.
5 Departamento de Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, Spain, C/ Tulipán, s/n, 28933, Móstoles, Spain.
Corresponding author: (E.X.M. García) This email address is being protected from spambots. You need JavaScript enabled to view it.
How to cite this article:
García, E.X.M., Arroyo, M., GonzálezRegalado, M.L., Muñoz, J.M., Bermejo, J., Rodríguez Vidal, J., Cáceres, L.M., Fernández, L., Abad, M., Izquierdo, T., Toscano, A., Gómez, P., Romero, V., Gómez, G., 2024, Multiproxy reconstruction of MioceneHolocene environmental changes in an estuarine succession of the Tinto River (SW Spain): Boletín de la Sociedad Geológica Mexicana, 76 (3), A180424. http://dx.doi.org/10.18268/BSGM2024v76n3a
Manuscript received: January 18, 2024; corrected manuscript received: March 26, 2024; manuscript accepted: April 15, 2024.
ABSTRACT
The sedimentary facies and foraminiferal assemblages of a core extracted from the middle estuary of the Tinto River (SW Spain) are studied to carry out a Miocene-Holocene palaeoenvironmental reconstruction of this area. During the Pleistocene, a strong erosion caused the dismantling of Neogene materials previously deposited on a marine shelf during the Upper Miocene and Pliocene. Subsequently, this sector was occupied by tidal channels/mudflats, an alluvial plain with strong erosion of Neogene formations, a period of tidal inundation with tidal channels and mud flats during the MIS-1 transgression and finally the presence of high and supratidal marshes during the last 2 kyr. The upper part of core A is composed of an anthropogenic infill carried out in the late 20th and early 21st century.
Keywords: estuarine evolution, facies, Foraminifera, MioceneHolocene, SW Spain.
