Franck Lartaud

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Among the deep-sea hydrothermal vent sites discovered in the past 30 years, Lost City on the Mid-Atlantic Ridge (MAR) is remarkable both for its alkaline fluids derived from mantle rock serpentinization and the spectacular seafloor carbonate chimneys precipitated from these fluids. Despite high concentrations of reduced chemicals in the fluids, this unique(More)
Lophelia pertusa is a colonial cold-water coral species with a wide spatial distribution in recent marine waters. Analysing the chemistry of its skeleton allows reconstruction of environmental parameter variations. While numerous studies have attempted to interpret such analyses, little information is available on the microstructures of Lophelia pertusa and(More)
18 The geochemical compositions of biogenic carbonates is increasingly used for 19 paleoenvironmental reconstructions. The skeletal ! 18 O temperature relationship is dependent 20 on water salinity, so many recent studies have focused on the Mg/Ca and Sr/Ca ratios because 21 those ratios in water do not change significantly on short time scales. Thus, those(More)
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