Heterogeneidades hidrogeológicas en el entorno de la cueva de Nerja (Málaga)consideraciones sobre la evolución karstogénica
- José Benavente 1
- Iñaki Vadillo 2
- Cristina Liñán 2
- Francisco Carrasco 2
- Albert Soler 3
- Carmen Almécija 1
- 1 Instituto de Investigación del Agua, Universidad de Granada
- 2 Grupo de Hidrogeología, facultad de Ciencias, Universidad de Málaga
- 3 Departamento de Cristalografía, Mineralogía y Yacimientos Minerales, Facultad de Geología, Universidad de Barcelona
- Calaforra Chordi, José María (coord.)
- Durán Valsero, Juan José (coord.)
Publisher: Asociación de Cuevas Turísticas Española ; Instituto Geológico y Minero de España
ISBN: 978-84-617-1908-2
Year of publication: 2014
Pages: 353-360
Congress: Congreso Español sobre Cuevas Turísticas (5. 2014. Aracena)
Type: Conference paper
Abstract
A number of boreholes drilled with different purposes in the surroundings of the Nerja Cave (Malaga) show water levels between 50 m and 130 m a.s.l. approximately. All of them correspond to the same aquifer formation: fissured and karstified calcite and dolomite marbles of Triassic age. The Nerja Cave floor is at present perched a few metres above the phreatic level of an active karstic flow system which drains by the nearby Maro spring (120 m). The hydrodynamical and hydrochemical characteristics of this spring indicate a high degree of functional karstification. However, the hydrodinamical data of the two tested boreholes suggest a low permeability. This indicates a marked heterogeneity of the aquifer, which also shows perched water levels. Based on these observations and other facts, we present a general hypothesis on the karstogenic evolution of the Sierra Almijara massif, in which the Nerja cave is located.