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doi:10.2204/iodp.proc.307.204.2009

Data report: bio- and lithofacies, mineralogy, and organic content of Challenger Mound (Porcupine Seabight, SW Ireland)¹

Philippe Léonide,² Marc Floquet,² and François Baudin³

Abstract

Sedimentologic, mineralogic, and geochemical analyses were performed on samples from Hole U1317A drilled on Challenger Mound during Integrated Ocean Drilling Program Expedition 307. Challenger Mound consists entirely of sediments bearing well-preserved coldwater coral Lophelia pertusa and other various bioclasts (planktonic foraminifers, cocolithophorids, echinoderms, sponge spicules, etc.) and containing large amounts of clays and quartz. Bioerosion of corals played an important role in generating carbonate grains. The biogenic fraction is autochthonous, whereas the siliciclastic fraction (dominated by illite and kaolinite-chlorite) is clearly allochthonous. Organic matter content is low, and no organic matter of bacterial origin was recognized. Challenger Mound is composed of a mixture of skeletal and siliciclastic components.

¹Léonide, P., Floquet, M., and Baudin, F., 2009. Data report: bio- and lithofacies, mineralogy, and organic content of Challenger Mound (Porcupine Seabight, SW Ireland). In Ferdelman, T.G., Kano, A., Williams, T., Henriet, J.-P., and the Expedition 307 Scientists, Proc. IODP, 307: Washington, DC (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/​iodp.proc.307.204.2009

²Laboratoire de Géologie des Systèmes et des Réservoirs Carbonatés, Université de Provence, EA 4234 Marseille, France. Correspondence author: Philippe.Leonide@univ-provence.fr

³UMR CNRS 7072 Tectonique, Université Pierre et Marie Curie-Paris 6, Paris, France.

Initial Receipt: 13 June 2008
Acceptance: 26 November 2008
Publication: 14 April 2009
MS 307-204

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