/* DATA DESCRIPTION: Citation: Böttcher, Michael Ernst; Brumsack, Hans-Jürgen (2026): Iron and sulfur geochemistry of deep biosphere sediments from ODP Leg 207 site 1259 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993269 (DOI registration in progress), In: Böttcher, ME; Brumsack, H-J (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) 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 Project(s): International Ocean Drilling Programme (IODP3) (URI: https://iodp3.org/) Funding: German Research Foundation (DFG) (URI: http://www.dfg.de/en/), grant/award no. BO 1584/2: Infrastructure Priority Programme “International Ocean Drilling Programme (IODP³)” (SPP 527) (URI: https://www.dfg.de/de/aktuelles/neuigkeiten-themen/info-wissenschaft/2025/ifw-25-88) German Research Foundation (DFG) (URI: http://www.dfg.de/en/), grant/award no. BR 775/16: Infrastructure Priority Programme “International Ocean Drilling Programme (IODP³)” (SPP 527) (URI: https://www.dfg.de/de/aktuelles/neuigkeiten-themen/info-wissenschaft/2025/ifw-25-88) German Research Foundation (DFG) (URI: http://www.dfg.de/en/), grant/award no. BR 775/17: Infrastructure Priority Programme “International Ocean Drilling Programme (IODP³)” (SPP 527) (URI: https://www.dfg.de/de/aktuelles/neuigkeiten-themen/info-wissenschaft/2025/ifw-25-88) Coverage: MEDIAN LATITUDE: 9.300393 * MEDIAN LONGITUDE: -54.199507 * SOUTH-BOUND LATITUDE: 9.299980 * WEST-BOUND LONGITUDE: -54.199960 * NORTH-BOUND LATITUDE: 9.300800 * EAST-BOUND LONGITUDE: -54.199080 DATE/TIME START: 2003-02-01T12:08:00 * DATE/TIME END: 2003-02-16T13:15:00 MINIMUM ELEVATION: -2355.8 m * MAXIMUM ELEVATION: -2353.8 m Event(s): 207-1259A * LATITUDE: 9.299980 * LONGITUDE: -54.199960 * DATE/TIME START: 2003-02-01T12:08:00 * DATE/TIME END: 2003-02-04T02:55:00 * ELEVATION: -2353.8 m * Penetration: 558.8 m * Recovery: 372.13 m * LOCATION: North Atlantic Ocean * CAMPAIGN: Leg207 (URI: https://doi.org/10.2973/odp.proc.ir.207.2004) * BASIS: Joides Resolution (URI: https://www-odp.tamu.edu:443/resolutn.html) * METHOD/DEVICE: Drilling/drill rig (DRILL) * COMMENT: 60 cores; 558.8 m cored; 0 m drilled; 66.6 % recovery 207-1259B * LATITUDE: 9.300800 * LONGITUDE: -54.199080 * DATE/TIME START: 2003-02-13T03:00:00 * DATE/TIME END: 2003-02-14T21:35:00 * ELEVATION: -2353.8 m * Penetration: 556.2 m * Recovery: 153.78 m * LOCATION: North Atlantic Ocean * CAMPAIGN: Leg207 (URI: https://doi.org/10.2973/odp.proc.ir.207.2004) * BASIS: Joides Resolution (URI: https://www-odp.tamu.edu:443/resolutn.html) * METHOD/DEVICE: Drilling/drill rig (DRILL) * COMMENT: 25 cores; 222.2 m cored; 334 m drilled; 69.2 % recovery 207-1259C * LATITUDE: 9.300400 * LONGITUDE: -54.199480 * DATE/TIME START: 2003-02-14T21:35:00 * DATE/TIME END: 2003-02-16T13:15:00 * ELEVATION: -2355.8 m * Penetration: 553.7 m * Recovery: 118.94 m * LOCATION: North Atlantic Ocean * CAMPAIGN: Leg207 (URI: https://doi.org/10.2973/odp.proc.ir.207.2004) * BASIS: Joides Resolution (URI: https://www-odp.tamu.edu:443/resolutn.html) * METHOD/DEVICE: Drilling/drill rig (DRILL) * COMMENT: 19 cores; 148.6 m cored; 405.1 m drilled; 80 % recovery 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 Parameter(s): Event label (Event) * PI: Böttcher, Michael Ernst (https://orcid.org/0000-0002-8877-0303, michael.boettcher@io-warnemuende.de) Date/Time of event (Date/Time) * PI: Böttcher, Michael Ernst (https://orcid.org/0000-0002-8877-0303, michael.boettcher@io-warnemuende.de) Latitude of event (Latitude) * PI: Böttcher, Michael Ernst (https://orcid.org/0000-0002-8877-0303, michael.boettcher@io-warnemuende.de) Longitude of event (Longitude) * PI: Böttcher, Michael Ernst (https://orcid.org/0000-0002-8877-0303, michael.boettcher@io-warnemuende.de) Sample code/label (Sample label) * PI: Böttcher, Michael Ernst (https://orcid.org/0000-0002-8877-0303, michael.boettcher@io-warnemuende.de) Unit (Unit) * PI: Böttcher, Michael Ernst (https://orcid.org/0000-0002-8877-0303, michael.boettcher@io-warnemuende.de) Depth, composite [mcd] (Depth comp) * PI: Böttcher, Michael Ernst (https://orcid.org/0000-0002-8877-0303, michael.boettcher@io-warnemuende.de) Iron, dithionite extractable [%] (FeD) * PI: Böttcher, Michael Ernst (https://orcid.org/0000-0002-8877-0303, michael.boettcher@io-warnemuende.de) * METHOD/DEVICE: Spectrophotometry after room temperature dithionite extraction * COMMENT: dwt. Iron, hydrochloric acid soluble [mg/kg] (Fe HCl acid soluble) * PI: Böttcher, Michael Ernst (https://orcid.org/0000-0002-8877-0303, michael.boettcher@io-warnemuende.de) * METHOD/DEVICE: Spectrophotometry after room temperature 0.5 M HCl extraction Sulfur, total reduced inorganic [%] (TRIS) * PI: Böttcher, Michael Ernst (https://orcid.org/0000-0002-8877-0303, michael.boettcher@io-warnemuende.de) * METHOD/DEVICE: Spectrophotometric method * COMMENT: dwt.; TRIS = AVS + CrS(II) Chromium reducible sulfur [%] (CRS) * PI: Böttcher, Michael Ernst (https://orcid.org/0000-0002-8877-0303, michael.boettcher@io-warnemuende.de) * METHOD/DEVICE: Spectrophotometric method * COMMENT: dwt.; chromium(II) reducible inorganic sulfur; essentially pyrite Acid volatile sulfides [mg/kg] (AVS) * PI: Böttcher, Michael Ernst (https://orcid.org/0000-0002-8877-0303, michael.boettcher@io-warnemuende.de) * METHOD/DEVICE: Spectrophotometric method Sulfur, organic [%] (S org) * PI: Böttcher, Michael Ernst (https://orcid.org/0000-0002-8877-0303, michael.boettcher@io-warnemuende.de) * METHOD/DEVICE: Elemental Analyser, Fison * COMMENT: dwt.; Kerogen-bond-organic sulfur); elemental analysis on washed and dried sediment residue after TRIS extraction License: Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/) Status: Curation Level: Enhanced curation (URI: https://wiki.pangaea.de/wiki/Curation_levels) * Processing Level: PANGAEA data processing level 3 (URI: https://wiki.pangaea.de/wiki/Processing_levels#PANGAEA_data_processing_level_3) Size: 183 data points */ Event Date/Time Latitude Longitude Sample label Unit Depth comp [mcd] FeD [%] Fe HCl acid soluble [mg/kg] TRIS [%] CRS [%] AVS [mg/kg] S org [%] 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-1R-2 2.55 0.10 15.2 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-2R-2 11.75 0.07 11.8 0.00011 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-3R-4 24.25 0.06 10.5 0.00010 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-5R-2 39.35 0.15 17.1 0.00012 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-6R-2 48.45 0.11 17.4 0.00076 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-7R-4 60.55 0.10 22.7 0.00150 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-8R-4 69.75 0.10 18.0 0.00240 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-9R-5 80.35 0.11 23.8 0.02100 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-10R-5 90.00 0.09 21.8 0.00460 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-12R-5 109.40 0.07 17.7 0.00240 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-14R-3 125.70 0.11 18.6 0.00160 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-16R-1 142.00 0.06 15.1 0.00015 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-18R-1 161.15 0.07 27.5 0.01000 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-20R-4 185.00 0.06 25.6 0.00360 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-22R-3 202.90 0.06 12.8 0.00078 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-24R-1 219.12 0.05 13.1 0.00025 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-26R-5 244.30 0.06 14.7 0.00029 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-29R-4 271.70 0.08 18.4 0.00870 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-32R-1 296.03 0.13 25.0 0.00011 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-34R-2 316.77 0.15 20.5 0.00009 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-36R-1 335.30 0.10 21.5 0.00025 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-38R-1 354.83 0.09 19.0 0.01500 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-40R-3 374.85 0.10 21.7 0.02800 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-43R-1 403.27 0.11 0.02400 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-45R-2 424.38 0.11 22.0 0.00065 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-48R-3 453.19 0.10 39.5 0.00230 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-50R-5 475.59 0.07 21.0 0.03800 207-1259A 2003-02-01T12:08:00 9.3000 -54.2000 1259-A-52R-1 III 490.08 0.02 4.6 0.14700 207-1259C 2003-02-14T21:35:00 9.3004 -54.1995 1259-C-16R-5 IV 529.18 0.02 2.6 0.43000 0.420 138.0 1.08 207-1259C 2003-02-14T21:35:00 9.3004 -54.1995 1259-C-17R-1 IV 532.38 0.03 6.3 0.70000 0.702 21.0 1.53 207-1259C 2003-02-14T21:35:00 9.3004 -54.1995 1259-C-18R-4 IV 547.73 0.07 18.3 1.42000 1.420 6.0 3.03 207-1259C 2003-02-14T21:35:00 9.3004 -54.1995 1259-C-19R-2 V 551.57 0.03 12.5 1.66000 1.660 0.0 0.00 207-1259B 2003-02-13T03:00:00 9.3008 -54.1991 1259-B-25R-1 V 555.18 199.5 0.58000 0.580 0.0 0.00