https://doi.pangaea.de/10.1594/PANGAEA.993243Böttcher, Michael ErnstMichael ErnstBöttcher0000-0002-8877-0303Leibniz Institute for Baltic Sea Research, WarnemündeUniversity of GreifswaldBrumsack, Hans-JürgenHans-JürgenBrumsack0000-0002-5549-5018Institute for Chemistry and Biology of the Marine Environment, Carl von Ossietzky University Oldenburg, GermanyPANGAEA2026black shaledeep biosphereDemerara Riseiron contentiron speciesODP 207organic sulfursulfur contentSulfur speciesEvent labelDate/Time of eventLatitude of eventLongitude of eventSample code/labelDepth, compositeDEPTH, sediment/rockUnitIron, dithionite extractableIron, hydrochloric acid solubleSulfur, total reduced inorganicChromium reducible sulfurAcid volatile sulfidesSulfur, organicDrilling/drill rigSpectrophotometry after room temperature dithionite extractionSpectrophotometry after room temperature 0.5 M HCl extractionSpectrophotometric methodElemental Analyser, FisonLeg207Joides ResolutionInternational Ocean Drilling Programme (IODP3)2003-01-15T14:30:00/2003-01-22T15:30:00Datasethttps://doi.pangaea.de/10.1594/PANGAEA.99324210.2973/odp.proc.sr.207.108.200610.1016/j.palaeo.2008.11.005195 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalThe iron and sulfur geochemistry was investigated on squeeze cake samples retrieved from deep biosphere sediments during ODP Leg, Demerara Rise, southern North Atlantic. Vertical profiles from 5 sites were analyzed using different chemical extraction methods followed by spectrophotometric geochemical analyses and organic sulfur using elemental analysis, to understand the carbon-iron-sulfur interactions during and black shale formation and upon diagenesis in the times after.The data file contains detailed analytical results on the iron and sulfur geochemistry that was investigated on squeeze cake samples retrieved from deep biosphere sediments during ODP Leg 207, Demerara Rise, southern North Atlantic. Vertical profiles from 5 sites were analyzed using different chemical extraction methods followed by spectrophotometric geochemical analyses, and organic sulfur using elemental analysis, to understand the carbon-iron-sulfur interactions during Cretaceous black shale formation and upon diagenesis in the times after.
Squeeze cake samples were taken after pore water retrival and kept frozen and anaerobic until freeze-drying in home laboratory-54.34195999999997-54.341580000000029.453439.45383North Atlantic OceanGerman Research Foundationhttps://doi.org/10.13039/501100001659BO 1584/2Infrastructure Priority Programme “International Ocean Drilling Programme (IODP³)” (SPP 527)German Research Foundationhttps://doi.org/10.13039/501100001659BR 775/16Infrastructure Priority Programme “International Ocean Drilling Programme (IODP³)” (SPP 527)German Research Foundationhttps://doi.org/10.13039/501100001659BR 775/17Infrastructure Priority Programme “International Ocean Drilling Programme (IODP³)” (SPP 527)