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Academic literature on the topic 'Carbonates pélagiques'
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Journal articles on the topic "Carbonates pélagiques"
de Rafélis, Marc, Maurice Renard, Laurent Emmanuel, and Christophe Durlet. "Apport de la cathodoluminescence à la connaissance de la spéciation du manganèse dans les carbonates pélagiques." Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science 330, no. 6 (March 2000): 391–98. http://dx.doi.org/10.1016/s1251-8050(00)00148-8.
Full textDissertations / Theses on the topic "Carbonates pélagiques"
Bassinot, Franck. "Analyse paléocéanographique à haute résolution des carbonates pélagiques des océans Indien et Pacifique en région tropicale." Aix-Marseille 3, 1993. http://www.theses.fr/1993AIX30011.
Full textHadji, Saïd. "Stratigraphie isotopique des carbonates pélagiques (Jurassique supérieur-Crétacé inférieur) du bassin d'Ombrie-Marches (Italie)." Paris 6, 1991. http://www.theses.fr/1991PA066514.
Full textGressier, Vincent. "Contribution des producteurs carbonatés phytoplanctoniques à l'évolution isotopiques (delta13C et delta18O ) des carbonates pélagiques des bassins Ouest téthysiens au cours de l'événement Valanginien (Weissert Event)." Paris 6, 2010. http://www.theses.fr/2010PA066630.
Full textMinoletti, Fabrice. "Mise au point d'un protocole de séparation des assemblages de nannofossiles calcaires : apport à la micropaléontologie et à la géochimie des producteurs carbonates pélagiques : application à la crise Crétacé-Tertiaire." Paris 6, 2002. http://www.theses.fr/2002PA066441.
Full textRafélis, Saint Sauveur Marc de. "Apport de l'étude de la spéciation du manganèse dans les carbonates pélagiques à la compréhension du contrôle des séquences eustatiques du 3ème ordre." Paris 6, 2000. http://www.theses.fr/2000PA066396.
Full textRassmann, Jens. "Le système des carbonates influencé par la diagenèse précoce dans les sédiments côtiers méditerranéens en lien avec l’acidification des océans." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLV110/document.
Full textContinental shelves are key regions for theglobal carbon cycle and particularly exposed to oceanacidification. A large part of organic matter (OM) ofcontinental and marine origin is mineralized in estuarinesediments following oxic and anoxic pathways.This mineralization produces dissolved inorganic carbon(DIC) leading to acidification of the bottom waters.Anoxic mineralization can produce total alkalinity(TA) that can contribute to buffer bottom water pHand increase the CO2 storage capacity of seawater. Measurementsin the sediments of the Rhˆone River prodeltashowed that anoxic mineralization, especially sulfate reduction,are the major pathways of OM mineralizationand create high DIC and TA fluxes. Land derived OMis mineralized close to the river mouth and marine OMtakes over on the shelf. An acidification experiment withsediment cores from the bay of Villefranche evidencedthat acidification causes carbonate dissolution at thesediment surface that buffers porewater pH
Suchéras-Marx, Baptiste. "Émergence de la production carbonatée pélagique au Jurassique moyen (180-160 Ma) : la conquête des océans par les coccolithophoridés du genre Watznaueria." Thesis, Lyon 1, 2012. http://www.theses.fr/2012LYO10024.
Full textCoccolithophorids are photosynthetic and planktonic marine algae that produce micrometric calcium carbonate (CaCO3) platelets called coccoliths. These algae appeared about 210 Ma ago and produce today most of the CaCO3 in the modern oceans, hence playing a major role in the carbon cycle. Nevertheless, the onset of oceanic CaCO3 production by these organisms during the Jurassic and its impact on carbon cycling remain poorly understood. This study therefore focused on the Middle Jurassic interval (Early Bajocian, -170 Ma) which records the diversification of Watznaueria, an evolutionary important coccolith genus that subsequently dominated oceanic CaCO3 production for more than 80 Myr. The analysis of coccolith assemblages from the Middle Jurassic of southern France and Portugal, based on an automaticcoccolith recognition device used for the first time on Jurassic coccoliths, allowed quantifying the impact of this diversification on CaCO3 production. In addition, the duration of this key interval has been revaluated by the cyclostratigraphic analysis of sedimentary strata from southern France. The reconstructed changes in CaCO3 production were compared to carbon cycle perturbations recorded by carbon isotope ratios and indicate a probable link with a marked increase of ocean fertility. Besides, paleontological analyses show that this diversification episode correspond to the successive appearance of different, probably opportunistic Watznaueria species. The obtained fluxes of pelagic CaCO3 production, by far lower than those recorded in modern oceans, seems too low to have significantly impacted theMiddle Jurassic carbon cycle
Giraud, Fabienne. "Recherche des périodicités astronomiques et des fluctuations du niveau marin à partir de l'étude du signal carbonaté des séries pélagiques alternantes : application au Crétacé inférieur du Sud-Est de la France (Bassin vocontien), de l'Atlantique central ( site 534 DSDP) et du golfe du Mexique ( site 535 DSDP)." Phd thesis, Université Claude Bernard - Lyon I, 1994. http://tel.archives-ouvertes.fr/tel-00818238.
Full textBoisseau, Thierry. "La plate-forme jurassienne et sa bordure subalpine au Berriasien-Valanginien ( Chartreuse-Vercors). Analyse et corrélations avec les séries de bassin. Sédimentologie, stratigraphie, micropaléontologie, magnétostratigraphie." Phd thesis, Grenoble 1, 1987. http://tel.archives-ouvertes.fr/tel-00562437.
Full textGonzalez, Lara Julio Cesar. "Le paléocène du Chiapas (SE du Mexique) : biostratigraphie, sédimentologie et stratigraphie séquentielle." Phd thesis, 2000. http://tel.archives-ouvertes.fr/tel-00723706.
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