Vicente, Raquel de y Muñoz Martín, Alfonso y Olaiz Campos, Antonio José y Antón López, Loreto y Vicente Muñoz, Gerardo de (2009) Aplicación del método electromagnético de inducción ligera para el análisis de la permeabilidad en medios fracturados (granito de “El Berrocal”, Sistema Central Español). Geogaceta, 46 . pp. 39-42. ISSN 0213-683X
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URL Oficial: http://www.geogaceta.com/
Resumen
Fracture characterization in granites has been an important subject of study during these last years, by means of geological-structural cartography, hydrogeology and geochemical analysis. All these works have been carried out to investigate the hydromechanics and permeability in low-permeability rocks. In this study we apply a surface geophysical method in order to characterize the permeability of the fault zones affecting “El Berrocal” granite (Central System, Spain). The low-induction electromagnetic method (EM) gives us the apparent resistivity values of the rocks at a maximum depth, allowing us to differentiate between soil / altered rock from fresh granites. As the apparent resistivity depends on the granite alteration and/or the water content, this parameter allows to estimate the relative permeability of different fracture zones. The obtained results show that the high-permeability fractures are those that are larger ones which were active during Alpine deformation (Eocene-present).
Tipo de documento: | Artículo |
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Palabras clave: | Permeability, Low-induction electromagnetic method, Resistivity, Fractures, Spanish Central System |
Materias: | Ciencias > Geología > Geodinámica |
Código ID: | 10362 |
Depositado: | 26 Mar 2010 18:41 |
Última Modificación: | 06 Feb 2014 08:42 |
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