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The circulation of methane-rich fluids at cold seeps often leads to precipitation of authigenic carbonates mediated by microbial activity, which can be used as archives of fluid seepage on continental margins. In this study, we have investigated the potential of using rare earth element (REE) concentrations in authigenic carbonates for tracing fluid sources and providing information on associated...
We report on a reconnaissance analysis of the geochemical composition of authigenic carbonates and sediment samples collected from various seepage sites on the Niger deep-sea fan. Our aim has been to investigate whether evidence for the presence of authigenic carbonates and gas hydrates within sediments is discernible from solid-phase sediment geochemistry. We show that sedimentary Sr/Ca and Mg/Ca...
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