Mediterranean outflow through the Strait of Gibraltar since 18,000 Years B.P.: Mineralogical and geochemical arguments |
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| Authors: | F. E. Grousset J. L. Joron P. E. Biscaye C. Latouche M. Treuil N. Maillet J. C. Faugères E. Gonthier |
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| Affiliation: | (1) U.A. CNRS 197, Université Bordeaux I, 351 Cours de la Libération, 33405 Talence-Cedex, France;(2) Lamont-Doherty Geological Observatory of Columbia University, 10964 Palisades, N.Y., USA;(3) Groupe des Sciences de la Terre, Laboratoire Pierre Süe, C.E.N. de Saclay, BP2, 91191 Gif sur Yvette, France;(4) Laboratoire de Géochimie Comparée et Systématique, Université Paris VI, 4 Place Jussieu, 75230 Paris, France |
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| Abstract: | Data obtained from mineralogical and geochemical analyses of piston and gravity cores, recovered from an area off Lisbon (Portugal) to the Alboran Sea (Mediterranean), serve as a basis for better understanding the past 18,000 years of hydrological exchanges at Gibraltar. Tracers used in this study are smectite, kaolinite, Ta, Th, La. One of the primary sources of particles both into and out of the Mediterranean is the Guadalquivir River. These particles are transported back into the Atlantic in the Mediterranean outflow water, and deposited along the Iberian slope. No evidence for reversal of this outflow current was found in those cores, since 18,000 years B.P. |
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