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Böttcher, Michael Ernst; Brumsack, Hans-Jürgen (2026): Iron and sulfur geochemistry of deep biosphere sediments from ODP Leg 207, Demerara Rise, southern North Atlantic [dataset publication series]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993242 (DOI registration in progress)

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Published: 2026-03-27

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Abstract:
The 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.
Keyword(s):
black shale; deep biosphere; Demerara Rise; iron content; iron species; ODP 207; organic sulfur; sulfur content; Sulfur species
Related to:
Böttcher, Michael Ernst; Hetzel, Almut; Brumsack, Hans-Jürgen; Schipper, Andrea (2006): Sulfur-iron-carbon geochemistry in sediments of the Demerara Rise. In: Mosher, DC, Erbacher, J, Malone, MJ (eds.), Proceedings of the Ocean Drilling Program, 207 Scientific Results, Proceedings of the Ocean Drilling Program, 207, Ocean Drilling Program, https://doi.org/10.2973/odp.proc.sr.207.108.2006
Hetzel, Almut; Böttcher, Michael Ernst; Wortmann, Ulrich G; Brumsack, Hans-Jürgen (2009): Paleo-redox conditions during OAE 2 reflected in Demerara Rise sediment geochemistry (ODP Leg 207). Palaeogeography, Palaeoclimatology, Palaeoecology, 273(3-4), 302-328, https://doi.org/10.1016/j.palaeo.2008.11.005
Funding:
German Research Foundation (DFG), grant/award no. BO 1584/2: Infrastructure Priority Programme “International Ocean Drilling Programme (IODP³)” (SPP 527)
German Research Foundation (DFG), grant/award no. BR 775/16: Infrastructure Priority Programme “International Ocean Drilling Programme (IODP³)” (SPP 527)
German Research Foundation (DFG), grant/award no. BR 775/17: Infrastructure Priority Programme “International Ocean Drilling Programme (IODP³)” (SPP 527)
Coverage:
Median Latitude: 9.300325 * Median Longitude: -54.427150 * South-bound Latitude: 9.048610 * West-bound Longitude: -54.733310 * North-bound Latitude: 9.453830 * East-bound Longitude: -54.199080
Date/Time Start: 2003-01-15T14:30:00 * Date/Time End: 2003-10-28T10:10:00
Comment:
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
Size:
5 datasets

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