Los abanicos aluviales del borde norte de la sierra de Mijas (cuenca de Málaga, Cordillera Bética Occidental)

• J.M. Insua-Arévalo ^[1] ; J.J. Martínez-Díaz ^[1] ; J. García-Mayordomo ^[3] ; F. Martín-García ^[2] ; R. Capote ^[1]
  1. [1] Universidad Complutense de Madrid

     Universidad Complutense de Madrid

     Madrid, España

     
  2. [2] Universidad Rey Juan Carlos

     Universidad Rey Juan Carlos

     Madrid, España

     
  3. [3] Laboratorio de Geotecnia. CEDEX

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• Localización: Contribuciones al estudio del periodo cuaternario / coord. por Javier Lario, Pablo G. Silva Barroso, 2007, ISBN 978-84-7484-201-2, págs. 151-152
• Idioma: español
• Texto completo no disponible (Saber más ...)
• Resumen

  • Three different generations of alluvial-fans have been identified at the northern border of Mijas range. The oldest generation is formed by debris-flow deposits showing an striking calcrete development of more than 30 m thick. The second generation is also formed by debris-flow deposits with important calcrete development (10 m max.). Finally, the third generation is formed by sheet-flow deposits with no calcrete development. Accordingly, the relative age of each depositional phase has been estimated in Pliocene, Lower-Middle Pleistocene and Upper Pleistocene-Holocene. The depositional phases show important dissimilarities from the western- to the eastern-sector of the mountain border. The oldest generation is only preserved at the western-sector, and the intermediate age generation is placed here at a higher elevation than in the eastern-sector. Furthermore, in the western-sector the youngest generation displays a distal-accretion off-lap arrangement in contrast to the proximal-accretion on-lap arrangement displayed in the eastern-sector. These significant dissimilarities are attributed to tectonic causes