Reconstrucción de la arquitectura lacustre cuaternaria del Maar de Fuentillejo mediante tomografía eléctrica. Campo de Calatrava

• A. García-Cortés ^[1] ; J. Vegas ^[1] ; A. Granda ^[3] ; L. Galán ^[1] ; A. Pérez-González ^[2]
  1. [1] Instituto Geológico y Minero de España

     Instituto Geológico y Minero de España

     Madrid, España

     
  2. [2] Universidad Complutense de Madrid

     Universidad Complutense de Madrid

     Madrid, España

     
  3. [3] International Geophyscial Technology (IGT Inc.)

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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. 191-192
• Idioma: español
• Texto completo no disponible (Saber más ...)
• Resumen

  • The geophysical method employed is the electrical tomography, of special interest and application in cases where the abrupt and complex lateral and vertical facies changes are presumed to be important. A 1,640-m network of high-resolution electrical resistivity tomography is used to construct a geophysical image of the internal structure of the Fuentillejo lake basin. Three apparent resistivity pseudo-sections (TE-1, TE-2 and TE-3) were measured, which show the architecture of the sedimentary facies and the contact with the maar country rocks. The penetration depth reached with this method is 80 m below lake floor. The geophysical results are contrasted with a 142 m length continuous core (FU-1) retrieved from a mechanical drilling for palaeoclimatic research. 23 major lithostratigraphic units have been identified in the lacustrine record of FU-1 core, pointing out variations in clastic input, water chemistry and organic fraction throughout the history of the lake.