1. Lago Mare episodes around the Messinian–Zanclean boundary in the deep southwestern Mediterranean
- Author
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Christian Gorini, Nadia Barhoun, Jean-Pierre Suc, Maria-Angela Bassetti, Martin J. Head, Jean-Loup Rubino, Jean-Luc Auxietre, Florina Deaconu, Damien Do Couto, MC Melinte-Dobrinescu, Jonathan Floodpage, Mathieu Dalibard, Speranta-Maria Popescu, GeoBioStratData.Consulting, Institut des Sciences de la Terre de Paris (iSTeP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Faculté des Sciences Ben M'sik [Casablanca], Université Hassan II [Casablanca] (UH2MC), National Institute for Marine Geology and Geo-ecology (GeoEcoMar ), Centre de Formation et de Recherche sur les Environnements Méditérranéens (CEFREM), Université de Perpignan Via Domitia (UPVD)-Centre National de la Recherche Scientifique (CNRS), Department of Earth Sciences [St. Catharines], Brock University [Canada], Department of Earth and Environmental Sciences [Geneva], University of Geneva [Switzerland], Total, CST JF–TG/ISS, Total, CST JF–TG/ISS - Pau, TOTAL S.A., Université de Perpignan Via Domitia (UPVD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), and Université de Genève = University of Geneva (UNIGE)
- Subjects
Mediterranean climate ,010504 meteorology & atmospheric sciences ,Evaporite ,Stratigraphy ,[SDU.STU]Sciences of the Universe [physics]/Earth Sciences ,Context (language use) ,Structural basin ,010502 geochemistry & geophysics ,Oceanography ,01 natural sciences ,Deposition (geology) ,Sedimentary depositional environment ,Paleontology ,Marine reflooding ,14. Life underwater ,Lago Mare events ,0105 earth and related environmental sciences ,biology ,Messinian–Zanclean boundary ,Dinoflagellate ,Geology ,Key-Words: High-resolution micropalaeontology ,biology.organism_classification ,Global Boundary Stratotype Section and Point ,Geophysics ,Deposition of the Upper Evaporitic Unit ,Economic Geology - Abstract
International audience; We present a high-resolution analysis of planktonic foraminifers, calcareous nannofossils, ostracods, dinoflagellate cysts and pollen grains in four sequences from DSDP–ODP holes in the southwestern Mediterranean Alboran and Balearic basins (976B, 977A, 978A and 134B) encompassing the previously defined Messinian–Zanclean boundary. The study focuses on (1) the marine reflooding, which closed the Messinian Salinity Crisis prior to the Zanclean GSSP; (2) the nature of the Lago Mare in the deep basins (indicated by Paratethyan dinoflagellate cysts), which appears to comprise several Paratethyan influxes without climatic control; and (3) the depositional context of the youngest Messinian evaporites which accumulated in a marine environment relatively close to the palaeoshoreline. Isolation of the Aegean Basin during the paroxysmic second step of the crisis is considered to have stored Paratethyan waters, which may then have poured into the Mediterranean central basins after deposition of the evaporitic sequence.
- Published
- 2015
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