@article {Hensen01042015,
	title = {{Strike-slip faults mediate the rise of crustal-derived fluids and mud volcanism in the deep sea}},
	journal = {Geology},
	volume = {43},
	number = {4},
	year = {2015},
	pages = {339{\textendash}342},
	abstract = {We report on newly discovered mud volcanoes located at \~{}4500 m water depth \~{}90 km west of the deformation front of the accretionary wedge of the Gulf of Cadiz, and thus outside of their typical geotectonic environment. Seismic data suggest that fluid flow is mediated by a >400-km-long strike-slip fault marking the transcurrent plate boundary between Africa and Eurasia. Geochemical data (Cl, B, Sr, 87Sr/86Sr, $δ$18O, $δ$D) reveal that fluids originate in oceanic crust older than 140 Ma. On their rise to the surface, these fluids receive strong geochemical signals from recrystallization of Upper Jurassic carbonates and clay-mineral dehydration in younger terrigeneous units. At present, reports of mud volcanoes in similar deep-sea settings are rare, but given that the large area of transform-type plate boundaries has been barely investigated, such pathways of fluid discharge may provide an important, yet unappreciated link between the deeply buried oceanic crust and the deep ocean.},
	doi = {10.1130/G36359.1},
	url = {http://geology.gsapubs.org/content/43/4/339.abstract},
	author = {Hensen, Christian and Scholz, Florian and Nuzzo, Marianne and Valadares, Vasco and Gr{\'a}cia, Eul{\`a}lia and Terrinha, Pedro and Liebetrau, Volker and Kaul, Norbert and Silva, Sonia and Mart{\'\i}nez-Loriente, Sara and Bartolom{\'e}, Rafael and Pi{\~n}ero, Elena and Magalh{\~a}es, Vitor H and Schmidt, Mark and Weise, Stephan M and Cunha, Marina and Hilario, Ana and Perea, Hector and Rovelli, Lorenzo and Lackschewitz, Klas}
}
@article {Martinez-Loriente2014,
	title = {{Seismic and gravity constraints on the nature of the basement in the Africa-Eurasia plate boundary: New insights for the geodynamic evolution of the SW Iberian margin}},
	journal = {Journal of Geophysical Research: Solid Earth},
	volume = {119},
	number = {1},
	year = {2014},
	month = {jan},
	pages = {127{\textendash}149},
	publisher = {Blackwell Publishing Ltd},
	abstract = {We present a new classification of geological domains at the Africa-Eurasia plate boundary off SW Iberia, together with a regional geodynamic reconstruction spanning from the Mesozoic extension to the Neogene-to-present- day convergence. It is based on seismic velocity and density models along a new transect running from the Horseshoe to the Seine abyssal plains, which is combined with previously available geophysical models from the region. The basement velocity structure at the Seine Abyssal Plain indicates the presence of a highly heterogeneous, thin oceanic crust with local high-velocity anomalies possibly representing zones related to the presence of ultramafic rocks. The integration of this model with previous ones reveals the presence of three oceanic domains offshore SW Iberia: (1) the Seine Abyssal Plain domain, generated during the first stages of slow seafloor spreading in the NE Central Atlantic (Early Jurassic); (2) the Gulf of Cadiz domain, made of oceanic crust generated in the Alpine-Tethys spreading system between Iberia and Africa, which was coeval with the formation of the Seine Abyssal Plain domain and lasted up to the North Atlantic continental breakup (Late Jurassic); and (3) the Gorringe Bank domain, made of exhumed mantle rocks, which formed during the first stages of North Atlantic opening. Our models suggest that the Seine Abyssal Plain and Gulf of Cadiz domains are separated by the Lineament South strike-slip fault, whereas the Gulf of Cadiz and Gorringe Bank domains appear to be limited by a deep thrust fault located at the center of the Horseshoe Abyssal Plain. {\textcopyright}2013. American Geophysical Union. All Rights Reserved.},
	keywords = {Central and North Atlantic kinematics, crustal nature, geological domains, gravity modeling, refraction and reflection traveltime tomography, wide-angle seismics},
	issn = {21699313},
	doi = {10.1002/2013JB010476},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84896782219\&partnerID=tZOtx3y1},
	author = {Mart{\'\i}nez-Loriente, Sara and Sallares, Valenti and Gr{\'a}cia, Eul{\`a}lia and Bartolom{\'e}, Rafael and Da{\~n}obeitia, Juan Jos{\'e} and Zitellini, Nevio}
}
@article {Sallares2013,
	title = {{Seismic evidence of exhumed mantle rock basement at the Gorringe Bank and the adjacent Horseshoe and Tagus abyssal plains (SW Iberia)}},
	journal = {Earth and Planetary Science Letters},
	volume = {365},
	year = {2013},
	month = {mar},
	pages = {120{\textendash}131},
	abstract = {The Gorringe Bank is a gigantic seamount that separates the Horseshoe and Tagus abyssal plains offshore SW Iberia, in a zone that hosts the convergent boundary between the Africa and Eurasia plates. Although the region has been the focus of numerous investigations since the early 1970s, the lack of appropriate geophysical data makes the nature of the basement, and thus the origin of the structures, still debated. In this work, we present combined P-wave seismic velocity and gravity models along a transect that crosses the Gorringe Bank from the Tagus to the Horseshoe abyssal plains. The P-wave velocity structure of the basement is similar in the Tagus and Horseshoe plains. It shows a 2.5-3.0. km-thick top layer with a velocity gradient twice stronger than oceanic Layer 2 and an abrupt change to an underlying layer with a five-fold weaker gradient. Velocity and density is lower beneath the Gorringe Bank probably due to enhanced fracturing, that have led to rock disaggregation in the sediment-starved northern flank. In contrast to previous velocity models of this region, there is no evidence of a sharp crust-mantle boundary in any of the record sections. The modelling results indicate that the sediment overlays directly serpentinite rock, exhumed from the mantle with a degree of serpentinization decreasing from a maximum of 70-80\% under the top of Gorringe Bank to less than 5\% at a depth of \~{}20. km. We propose that the three domains were originally part of a single serpentine rock band, of nature and possibly origin similar to the Iberia Abyssal Plain ocean-continent transition, which was probably generated during the earliest phase of the North Atlantic opening that followed continental crust breakup (Early Cretaceous). During the Miocene, the NW-SE trending Eurasia-Africa convergence resulted in thrusting of the southeastern segment of the exhumed serpentinite band over the northwestern one, forming the Gorringe Bank. The local deformation associated to plate convergence and uplift could have promoted pervasive rock fracturing of the overriding plate, leading eventually to rock disaggregation in the northern flank of the GB, which could be now a potential source of rock avalanches and tsunamis. {\textcopyright} 2013 Elsevier B.V.},
	keywords = {Gravity modelling, Mantle exhumation, North Atlantic margin, Travel-time tomography, wide-angle seismics},
	issn = {0012821X},
	doi = {10.1016/j.epsl.2013.01.021},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84874491076\&partnerID=tZOtx3y1},
	author = {Sallares, Valenti and Mart{\'\i}nez-Loriente, Sara and Prada, Manel and Gr{\'a}cia, Eul{\`a}lia and Ranero, C{\'e}sar and Gutscher, Marc-Andr{\'e} and Bartolom{\'e}, Rafael and Gailler, Audrey and Da{\~n}obeitia, Juan Jos{\'e} and Zitellini, Nevio}
}
