RT Journal Article T1 Strategic Elements in Holocene Sediments of the Tinto River Estuary (SW Spain) A1 Romero Aguilar, Verónica A1 Ruiz Muñoz, Francisco A1 González-Regalado Montero, María Luz A1 Rodríguez Vidal, Joaquín A1 Cáceres Puro, Luis Miguel A1 Toscano Grande, Antonio A1 Gómez Gutiérrez, Paula A1 Abad de los Santos, Manuel A1 Izquierdo, Tatiana A1 Gómez Álvarez, Gabriel AB River mouths act as containers for pollution episodes that have occurred intheir drainage basins over time. The estuary of the Tinto River is currently one of themost polluted areas in the world, due to past and recent mining and industrial activities.This communication studies the concentrations of seven strategic minerals in a sedimentcore obtained in the middle estuary of this river. The Holocene geochemical record hasallowed us to distinguish four episodes of contamination: an initial one due to acidrock drainage during the MIS-1 transgression and three anthropogenic ones due to thefirst mining activities, the Roman period, and the industrial mining stages of the 19th and20th centuries. The concentrations of these strategic minerals increase from the first episodeto the fourth. A first evaluation of the concentrations obtained in this core and adjacentpre-Holocene formations reveals that they are too low to consider these sediments oredeposits of the seven elements studied. PB MDPI SN 2076-3417 (electrónico) YR 2025 FD 2025-03 LK https://hdl.handle.net/10272/25158 UL https://hdl.handle.net/10272/25158 LA eng NO Romero, V., Ruiz, F., González-Regalado, M. L., Rodríguez Vidal, J., Cáceres, L. M., Toscano, A., Gómez, P., Abad, M., Izquierdo, T., & Gómez, G. (2025). Strategic Elements in Holocene Sediments of the Tinto River Estuary (SW Spain). In Applied Sciences (Vol. 15, Issue 5, p. 2655). MDPI AG. https://doi.org/10.3390/app15052655 NO This study was mainly financed by the Palos de la Frontera Council. It was also carriedout through the following projects: (a) DGYCIT project CTM2006-06722/MAR; (b) DGYCIT projectCGL2006-01412; (c) Roman cities of the Baetica, CORPVS VRBIVM BAETICARVM (I) (CUB) (AndalusianGovernment); (d) From the Atlantic to the Tyrrhenian, the Hispanic ports and their commercialrelations with Ostia Antica, DEATLANTIR II—HAR2017-89154-P (Plan Nacional de I + D + i); and(e) FEDER 2014–2020 project UHU-1260298. Other funds were provided by the Andalusian Government(groups HUM-132, RNM-238, and RNM-293). This work is a contribution to the ResearchCenter in Historical, Cultural and Natural Heritage (CIPHCN) of the University of Huelva. DS Repositorio Institucional de la Universidad de Huelva RD 31 may 2026