Los humedales salinos del entorno de Zaragozauna singularidad hidrogeomorfológica
- N. Jiménez-Torrecilla 1
- J.P. Galve-Arnedo 1
- M.P. Asta-Andrés 2
- L. Gómez-Zaera 1
- J. Fuentes-Retamar 1
- 1 Grupo GINCA, Area de Geodinámica Externa, Departamento Ciencias de la Tierra, Universidad de Zaragoza
- 2 Area de Petrología, Departamento Ciencias de la Tierra, Universidad de Zaragoza
ISSN: 1576-5172
Año de publicación: 2004
Título del ejemplar: VI CONGRESO GEOLÓGICO DE ESPAÑA (Zaragoza, 12-15 julio, 2004)
Número: 6
Páginas: 115-118
Tipo: Artículo
Otras publicaciones en: Geotemas (Madrid)
Resumen
The development of scattered hypersaline wetlands in the fluvial terraces of the central sector of the Ebro Corridor is related to discharge areas from the poorly known karstic tertiary evaporitic Aquifer. The groundwater flow concentration in those areas would accelerate gypsum dissolution and therefore subsidence processes, leading eventually to the development of wetlands when phreatic level is reached by the sinking of topographic surface. This unique process of formation is related to the particular geological context of the Ebro Corridor; where a 3000 m thick unit of evaporitic materials is covered by well-developed fluviatile terraces. Hypersaline wetlands in this area can therefore be regarded as threatened geological heritage landmarks whose conservation requires the knowledge of their singularities by the local population and the public authorities. The study of hypersaline wetlands of the Ebro Corridor also opens new research lines in the field of subsidence-related geological risks affecting this area, and might play a significant role in their detection and mitigation.