Medialdea Cela, Teresa and Somoza Losada, Luis and Pinheiro, Luis Menezes and Fernández Puga, Mª Carmen and Vázquez Garrido, Juan Tomás and León Buendía, Ricardo and Ivanov, M.K. and Magalhaes, Vitor Hugo and Díaz del Río Español, Víctor and Vegas, Ramón (2009) Tectonics and mud volcano development in the Gulf of Cádiz. Marine geology, 261 . pp. 48-63. ISSN 0025-3227
Official URL: http://www.elsevier.com/locate/margeo
Many structures associated with fluid escape, including mud volcanoes, mud-carbonate mounds, pockmarks and slides, have been identified and characterized in the Gulf of Cádiz. Most of the mud volcanoes following NE–SW and NW–SE main trends are found at 350–2000 m depth in the eastern domain of the Gulf of Cádiz, which corresponds to the Betic–Rifean Margin. Scattered mud volcanoes have also been recognized on the lower slope at 2300–3900 m depth. The major tectonic structures are thrust faults, extensional faults, strikeslip faults and diapirs. All these tectonic structures have provided escape pathways for overpressured material and fluids or have favoured upward fluid movement along the sedimentary column and eventually the build up of mud volcanoes. In this work we present images of the mud volcano plumbing systems and the relationship between regional tectonics and mud volcano development. Seismic profiles acquired during the TASYO 2000 and MVSEIS/TTR-15 cruises are used to image and interpret the link between the mud volcano edifices and the subsurface tectonic structures.
|Uncontrolled Keywords:||Mud volcanoes; Hydrocarbon seeps; Fluid venting; Diapirism; Tectonics; Gulf of Cadiz|
|Subjects:||Sciences > Geology > Geodynamics|
|Deposited On:||17 Oct 2012 13:57|
|Last Modified:||17 Oct 2012 13:57|
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