RT Journal Article T1 Diapiric Structures in the Tinto River Estuary (SW Spain) Caused by Artificial Load of an Industrial Stockpile A1 Morales González, Juan Antonio A1 Carro Flores, Berta A1 Borrego Flores, José A1 Diosdado Aragón, Antonio Jesús A1 Aguilar, M. Eugenia A1 González, Miguel A. AB The mouth of the Tinto River is located on the southwest coast of the Iberian Peninsula in the northwest of the Gulf of Cadiz. The river flows into an estuarine system shared with the Odiel River, commonly known as the “Ría de Huelva”. In the 1960s, a wide area of ancient salt marshes was transformed by a stockpile of industrial wastes of phosphogypsum, reaching a height of 35 m above the level of the salt marsh at its highest point. Two surveys using high-resolution seismic reflection in conjunction with a parametric profiler were carried out in 2016 and 2018. The purpose of these geophysical studies was the realization of a 3D model of the sedimentary units constituting the most recent filling of the estuary. The records present abundant extrusion structures located on the margins of the waste stockpiles, which break the visible stratification of the surficial units of the estuary. In some sectors, these structures have reached the estuarine surface and have, therefore, a morphological expression on the estuarine floor. The origin of these structures is interpreted as a vertical escape of fluidized sediments from lower units caused by overpressure from stacking. PB MDPI SN 2072-4292 (electrónico) YR 2024 FD 2024-04 LK https://hdl.handle.net/10272/23591 UL https://hdl.handle.net/10272/23591 LA eng NO Morales, J. A., Carro, B. M., Borrego, J., Diosdado, A. J., Aguilar, M. E., & González, M. A. (2024). Diapiric Structures in the Tinto River Estuary (SW Spain) Caused by Artificial Load of an Industrial Stockpile. In Remote Sensing (Vol. 16, Issue 8, p. 1465). MDPI AG. https://doi.org/10.3390/rs16081465 NO This research was funded by a special action of the Andalusian Regional Government (Junta de Andalucía) for the Research Project entitled “The Huelva phosphogypsum stockpiles: solutions to a socio-environmental problem”. DS Repositorio Institucional de la Universidad de Huelva RD 17 jun 2026