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Contourite processes associated with the Mediterranean Outflow Water after its exit from the Strait of Gibraltar: Global and conceptual implications

2014; Geological Society of America; Volume: 42; Issue: 3 Linguagem: Inglês

10.1130/g35083.1

1943-2682

F.J. Hernández-Molina, Estefanía Llave, Benedict Preu, Gemma Ercilla, Antia Fontan, Miguel Bruno, Nuno Serra, Juanjo J. Gomiz, Rachel Brackenridge, Francisco Javier Sierro, Dorrik A. V. Stow, Marga García, Carmen Juan, Nicolas Sandoval, A. Arnaíz,

Geological formations and processes

Research Article| March 01, 2014 Contourite processes associated with the Mediterranean Outflow Water after its exit from the Strait of Gibraltar: Global and conceptual implications F.J. Hernández-Molina; F.J. Hernández-Molina 1Department of Earth Sciences, Royal Holloway, University of London, Egham, Surrey TW20 0EX, UK Search for other works by this author on: GSW Google Scholar E. Llave; E. Llave 2Instituto Geológico y Minero de España (IGME), Ríos Rosas 23, 28003 Madrid, Spain Search for other works by this author on: GSW Google Scholar B. Preu; B. Preu 3Chevron, Seafield House, Aberdeen AB15 6XL, UK Search for other works by this author on: GSW Google Scholar G. Ercilla; G. Ercilla 4Institut de Ciències del Mar, CSIC, Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Spain Search for other works by this author on: GSW Google Scholar A. Fontan; A. Fontan 5Facultad Ciencias do Mar, Universidade de Vigo, 36200 Vigo, Spain Search for other works by this author on: GSW Google Scholar M. Bruno; M. Bruno 6Centro Andaluz de Ciencia y Tecnología Marinas (CACYTMAR), Universidad Cádiz, Puerto Real, 11510 Cádiz, Spain Search for other works by this author on: GSW Google Scholar N. Serra; N. Serra 7Institut für Meereskunde, Universität Hamburg, Bundesstrasse 53, 20146 Hamburg, Germany Search for other works by this author on: GSW Google Scholar J.J. Gomiz; J.J. Gomiz 6Centro Andaluz de Ciencia y Tecnología Marinas (CACYTMAR), Universidad Cádiz, Puerto Real, 11510 Cádiz, Spain Search for other works by this author on: GSW Google Scholar R.E. Brackenridge; R.E. Brackenridge 8Institute of Petroleum Engineering, Heriot-Watt University, Edinburgh EH14 4AS, Scotland, UK Search for other works by this author on: GSW Google Scholar F.J. Sierro; F.J. Sierro 9Departamento de Geología, Universidad de Salamanca, 37008 Salamanca, Spain Search for other works by this author on: GSW Google Scholar D.A.V. Stow; D.A.V. Stow 8Institute of Petroleum Engineering, Heriot-Watt University, Edinburgh EH14 4AS, Scotland, UK Search for other works by this author on: GSW Google Scholar M. García; M. García 10Instituto Andaluz de Ciencias de la Tierra (IACT), CSIC, Universidad de Granada, Avenida de las Palmeras 4, 18100 Armilla, Spain Search for other works by this author on: GSW Google Scholar C. Juan; C. Juan 5Facultad Ciencias do Mar, Universidade de Vigo, 36200 Vigo, Spain Search for other works by this author on: GSW Google Scholar N. Sandoval; N. Sandoval 11Sociedad Española de Estudios para la Comunicación Fija a través del Estrecho de Gibraltar, S.A. (SECEGSA), c/ Alfonso XII 3-5, 28014 Madrid, Spain Search for other works by this author on: GSW Google Scholar A. Arnaiz A. Arnaiz 12Repsol, Méndez Álvaro 44, Edificio Azul 2ª planta, 28045 Madrid, Spain Search for other works by this author on: GSW Google Scholar Author and Article Information F.J. Hernández-Molina 1Department of Earth Sciences, Royal Holloway, University of London, Egham, Surrey TW20 0EX, UK E. Llave 2Instituto Geológico y Minero de España (IGME), Ríos Rosas 23, 28003 Madrid, Spain B. Preu 3Chevron, Seafield House, Aberdeen AB15 6XL, UK G. Ercilla 4Institut de Ciències del Mar, CSIC, Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Spain A. Fontan 5Facultad Ciencias do Mar, Universidade de Vigo, 36200 Vigo, Spain M. Bruno 6Centro Andaluz de Ciencia y Tecnología Marinas (CACYTMAR), Universidad Cádiz, Puerto Real, 11510 Cádiz, Spain N. Serra 7Institut für Meereskunde, Universität Hamburg, Bundesstrasse 53, 20146 Hamburg, Germany J.J. Gomiz 6Centro Andaluz de Ciencia y Tecnología Marinas (CACYTMAR), Universidad Cádiz, Puerto Real, 11510 Cádiz, Spain R.E. Brackenridge 8Institute of Petroleum Engineering, Heriot-Watt University, Edinburgh EH14 4AS, Scotland, UK F.J. Sierro 9Departamento de Geología, Universidad de Salamanca, 37008 Salamanca, Spain D.A.V. Stow 8Institute of Petroleum Engineering, Heriot-Watt University, Edinburgh EH14 4AS, Scotland, UK M. García 10Instituto Andaluz de Ciencias de la Tierra (IACT), CSIC, Universidad de Granada, Avenida de las Palmeras 4, 18100 Armilla, Spain C. Juan 5Facultad Ciencias do Mar, Universidade de Vigo, 36200 Vigo, Spain N. Sandoval 11Sociedad Española de Estudios para la Comunicación Fija a través del Estrecho de Gibraltar, S.A. (SECEGSA), c/ Alfonso XII 3-5, 28014 Madrid, Spain A. Arnaiz 12Repsol, Méndez Álvaro 44, Edificio Azul 2ª planta, 28045 Madrid, Spain Publisher: Geological Society of America Received: 04 Sep 2013 Revision Received: 23 Nov 2013 Accepted: 25 Nov 2013 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2014 Geological Society of America Geology (2014) 42 (3): 227–230. https://doi.org/10.1130/G35083.1 Article history Received: 04 Sep 2013 Revision Received: 23 Nov 2013 Accepted: 25 Nov 2013 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation F.J. Hernández-Molina, E. Llave, B. Preu, G. Ercilla, A. Fontan, M. Bruno, N. Serra, J.J. Gomiz, R.E. Brackenridge, F.J. Sierro, D.A.V. Stow, M. García, C. Juan, N. Sandoval, A. Arnaiz; Contourite processes associated with the Mediterranean Outflow Water after its exit from the Strait of Gibraltar: Global and conceptual implications. Geology 2014;; 42 (3): 227–230. doi: https://doi.org/10.1130/G35083.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract We characterize the eastern Gulf of Cadiz, proximal to the Strait of Gibraltar, using a multidisciplinary approach that combines oceanographic, morphosedimentary, and stratigraphic studies. Two terraces (upper and lower) were identified along the middle slope. They are composed of several associated morphologic elements, including two large erosive channels, which allow us to determine a new and more detailed understanding of the Mediterranean Outflow Water (MOW) pathway and its deceleration upon exiting the Strait of Gibraltar. There is evidence for along-slope circulation and additional secondary circulation oblique to the main flow. The present upper core of the MOW flows along the upper terrace and the lower core flows along the lower terrace. However, the lower terrace shows larger and better defined erosive features on the seafloor than does the upper terrace; we attribute this to a denser, deeper, and faster MOW circulation that prevailed during past cold climates. Development of the present features started ca. 3.8–3.9 Ma, but the present morphology was not established until the late Pliocene–early Quaternary (3.2 to older than 2.0 Ma), when the MOW was enhanced, coeval with global cooling, a sea-level fall, and an increase in thermohaline circulation. We propose a direct link between the MOW and the Atlantic Meridional Overturning Circulation and therefore between the MOW and both the Northern Hemisphere and global climate. Our results have enabled a better understanding of a major overflow related to an oceanic gateway, and are of broad interest to geologists, climatologists, oceanographers, and petroleum geologists. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.