Volcanes de fango y tectónica en el Golfo de Cádiz

  1. Teresa Medialdea 1
  2. Luis Somoza 1
  3. Juan Tomás Vázquez Garrido 2
  4. R. León 1
  5. María C. Fernández Puga 2
  6. Ramón Vegas Martínez 3
  7. Víctor Díaz del Río Español 2
  1. 1 Instituto Geológico y Minero de España
    info

    Instituto Geológico y Minero de España

    Madrid, España

    ROR https://ror.org/04cadha73

  2. 2 Facultad de Ciencias del Mar, Universidad de Cádiz
  3. 3 Depto. de Geodinámica, Fac. C. Geológicas, Universidad Complutense
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Revista:
Geotemas (Madrid)

ISSN: 1576-5172

Ano de publicación: 2008

Título do exemplar: VII Congreso Geológico de España

Número: 10

Páxinas: 639-642

Tipo: Artigo

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Outras publicacións en: Geotemas (Madrid)

Resumo

Numerous structures associated with fluid escape have been identified in the Gulf of Cadiz: mud volcanoes, carbonate-mud mounds bearing carbonate chimneys and pockmarks. Most of the mud volcanoes are found in the eastern domain of the Gulf of Cadiz, which corresponds to the Betic-Rifean Margin, at 400-1400 m depth, following NE-SW and NW-SE trends. Scattered mud volcanoes have also been recognized in the lower slope at 2400-3900 m depth. In the Gulf of Cadiz , structures related to the NW compressive regime represent the major control for fluid migration. Acquisition of seismic profiles along the continental slope allows us to map and characterize the dominant tectonic structures: thrust faults, extensional faults, strike-slip faults as well as diapirs and analyze its relationship with mud volcano development in different sectors of the margin. All these tectonic structures have provided escape pathways for overpressured material and fluids or have favoured the upwards fluid movement along the sedimentary column and eventually the build-up of mud volcanoes.

Fonte de datos: Dialnet