Caracterización y clasificación de las estructuras diapíricas localizadas en el talud medio del Golfo de Cádiz

• M.C. Fernández Puga ^[1] ; J.T. Vázquez ^[1] ; L. Somoza ^[2] ; T. Medialdea ^[2] ; V. Díaz del Río ^[4] ; L.M. Pinheiro ^[3]
  1. [1] Universidad de Cádiz

     Universidad de Cádiz

     Cádiz, España

     
  2. [2] Instituto Geológico y Minero de España

     Instituto Geológico y Minero de España

     Madrid, España

     
  3. [3] Universidade de Aveiro

     Universidade de Aveiro

     Vera Cruz, Portugal

     
  4. [4] nstituto Español de Oceanografía

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• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 6, 5, 2004 (Ejemplar dedicado a: VI CONGRESO GEOLÓGICO DE ESPAÑA, ZARAGOZA, 12-15 JULIO, 2004), págs. 171-174
• Idioma: español
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• Resumen

  • The aim of this paper is the study of the diapiric structures along the Middle Slope of the Gulfof Cadiz by means of seismic reflection profiles interpretation. These diapiric structures extendacross a wide sector of the margin and modified the sea-floor phisiography. Diapirs show ageneral NE-SW trend as well as variable morphology, geometry and magnitude. Most of themshows an assymetric geometry caused by regional tectonic stress, also they could be outcropping or deforming the sea-floor. Main diapirs are related to the Gulf of Cadiz AllocthonousUnits and are placed in different tectonic styles: a) extensional, related to listric faults, and b)compressional, relate to reverse faults. In other sense, numerous morphologies like mud volcanoes pockmaks, colapses and carboante deposits related with gas expulsion from diapirs appearover the continental slope.