RT Journal Article
T1 REE Geochemistry of Neogene–Holocene Sediments of La Fontanilla Cove (Tinto Estuary, SW Spain)
A1 Prudencio, María Isabel
A1 Ruiz Muñoz, Francisco
A1 Rodríguez Vidal, Joaquín
A1 Cáceres Puro, Luis Miguel
A1 González-Regalado Montero, María Luz
A1 Gómez Gutiérrez, Paula
A1 Toscano Grande, Antonio
A1 Arroyo Serrano, Marta
A1 Romero Aguilar, Verónica
A1 Gómez Álvarez, Gabriel
AB The Tinto and Odiel rivers (SW Spain) drain from a vast sulfide mining district and join ata 20-km-long estuary that enters the Atlantic Ocean. In this work, the contents of rare earth elements(REE) and fractionation in Neogene–Holocene sediment cores from La Fontanilla cove (Tinto estuary)were studied. The sediments were collected from a depth of 18 m at different distances from therecent river flow and were analyzed for new information on the temporal development of the REEload in the sediment column. Results show that the å REE is higher in the finer sediments andduring periods of mining activity from prehistoric to recent times. Marine influence appears toincrease the light REE (LREE) relative to the heavy REE (HREE). The REE patterns of these estuarinesediments show convex curvatures in the MREE relative to the LREE and HREE, indicating thepresence of acid-mixing processes between the fluvial waters affected by acid mine drainage (AMD)and seawater, as well as the precipitation of poorly crystalline mineral phases. Significant positive Euanomalies were found in ebb-tide channels and marsh deposits, which can reflect the mineralogicalcomposition and/or a strong localized salinity gradient combined with organic matter degradation.Sedimentological characteristics of the deposits appear to play the main role in accumulation andfractionation of the REE
PB MDPI
SN 2075-163X
YR 2022
FD 2022
LK http://hdl.handle.net/10272/20901
UL http://hdl.handle.net/10272/20901
LA eng
NO Prudêncio, M. I., Ruiz, F., Marques, R., Dias, M. I., Vidal, J. R., Rodrigues, A. L., Cáceres, L. M., González-Regalado, M. L., Muñoz, J. M., Pozo, M., Gómez, P., Toscano, A., Abad, M., Izquierdo, T., Arroyo, M., Romero, V., & Gómez, G. (2022). REE Geochemistry of Neogene–Holocene Sediments of La Fontanilla Cove (Tinto Estuary, SW Spain). In Minerals (Vol. 12, Issue 4, p. 417). MDPI AG. https://doi.org/10.3390/min12040417
NO Funds came from the Andalusian Government (groups RNM-238 and RNM-293), the townhall of Palos de la Frontera, and the FEDER 2014–2020 project UHU-1260298, which is a contributionto the Research Center in Historical, Cultural, and Natural Heritage (CIPHCN) of the Universityof Huelva. The C2TN/IST authors gratefully acknowledge the support of the FCT (the PortugueseScience and Technology Foundation) through the UIDB/04349/2020 project and the post-doctoralgrant SFRH/BPD/114986/2016
DS Repositorio Institucional de la Universidad de Huelva
RD 13 jun 2026