Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Böttcher, Michael Ernst; Brumsack, Hans-Jürgen (2026): Iron and sulfur geochemistry of deep biosphere sediments from ODP Leg 207 site 1257 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993243 (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)

Always quote citation above when using data! You can download the citation in several formats below.

Published: 2026-03-27

RIS CitationBibTeX Citation ShareShow MapGoogle Earth

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)
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: 9.453630 * Median Longitude: -54.341780 * South-bound Latitude: 9.453430 * West-bound Longitude: -54.341960 * North-bound Latitude: 9.453830 * East-bound Longitude: -54.341580
Date/Time Start: 2003-01-15T14:30:00 * Date/Time End: 2003-01-22T15:30:00
Minimum DEPTH, sediment/rock: 1.45 m * Maximum DEPTH, sediment/rock: 275.81 m
Event(s):
207-1257A  * Latitude: 9.453830 * Longitude: -54.341960 * Date/Time Start: 2003-01-15T14:30:00 * Date/Time End: 2003-01-19T22:45:00 * Elevation: -2951.0 m * Penetration: 284.7 m * Recovery: 216.05 m * Location: North Atlantic Ocean * Campaign: Leg207 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 31 core; 284.7 m cored; 0 m drilled; 75.9 % recovery
207-1257B  * Latitude: 9.453630 * Longitude: -54.341800 * Date/Time Start: 2003-01-19T22:45:00 * Date/Time End: 2003-01-21T13:20:00 * Elevation: -2951.0 m * Penetration: 227.3 m * Recovery: 116.23 m * Location: North Atlantic Ocean * Campaign: Leg207 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 187.3 m cored; 40 m drilled; 62.1 % recovery
207-1257C  * Latitude: 9.453430 * Longitude: -54.341580 * Date/Time Start: 2003-01-21T13:20:00 * Date/Time End: 2003-01-22T15:30:00 * Elevation: -2951.0 m * Penetration: 235.9 m * Recovery: 96.6 m * Location: North Atlantic Ocean * Campaign: Leg207 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 16 cores; 153.9 m cored; 82 m drilled; 62.8 % 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):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Event labelEventBöttcher, Michael Ernst
2 Date/Time of eventDate/TimeBöttcher, Michael Ernst
3 Latitude of eventLatitudeBöttcher, Michael Ernst
4 Longitude of eventLongitudeBöttcher, Michael Ernst
5 Sample code/labelSample labelBöttcher, Michael Ernst
6 Depth, compositeDepth compmcdBöttcher, Michael Ernst
7 DEPTH, sediment/rockDepth sedmBöttcher, Michael ErnstGeocode – mbsf
8 UnitUnitBöttcher, Michael Ernst
9 Iron, dithionite extractableFeD%Böttcher, Michael ErnstSpectrophotometry after room temperature dithionite extractiondwt.
10 Iron, hydrochloric acid solubleFe HCl acid solublemg/kgBöttcher, Michael ErnstSpectrophotometry after room temperature 0.5 M HCl extraction
11 Sulfur, total reduced inorganicTRIS%Böttcher, Michael ErnstSpectrophotometric methoddwt.; TRIS = AVS + CrS(II)
12 Chromium reducible sulfurCRS%Böttcher, Michael ErnstSpectrophotometric methoddwt.; chromium(II) reducible inorganic sulfur; essentially pyrite
13 Acid volatile sulfidesAVSmg/kgBöttcher, Michael ErnstSpectrophotometric method
14 Sulfur, organicS org%Böttcher, Michael ErnstElemental Analyser, Fisondwt.; 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)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
195 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Event		2 
Date/Time		3 
Latitude		4 
Longitude		5 
Sample label		6 
Depth comp [mcd]		7 
Depth sed [m]		8 
Unit		9 
FeD [%]		10 
Fe HCl acid soluble [mg/kg]		11 
TRIS [%]		12 
CRS [%]		13 
AVS [mg/kg]		14 
S org [%]
207-1257A 2003-01-15T14:30:009.4538-54.34201257-A-1H-11.451.45I0.437030.00.00010
207-1257A2003-01-15T14:30:009.4538-54.34201257-A-2H-48.558.55II0.121023.10.03300
207-1257A2003-01-15T14:30:009.4538-54.34201257-A-3H-418.0518.05II0.091017.20.02800
207-1257A2003-01-15T14:30:009.4538-54.34201257-A-4H-326.0526.05II0.094018.70.04300
207-1257A2003-01-15T14:30:009.4538-54.34201257-A-5H-335.5535.55II0.149023.30.01000
207-1257A2003-01-15T14:30:009.4538-54.34201257-A-6X-345.0545.05II0.059012.60.01600
207-1257A2003-01-15T14:30:009.4538-54.34201257-A-7X-349.3549.35II0.074013.40.00100
207-1257B 2003-01-19T22:45:009.4536-54.34181257-B-3R-256.1252.75II0.057013.20.00092
207-1257A2003-01-15T14:30:009.4538-54.34201257-A-8X-358.5558.55II0.088613.30.00220
207-1257B2003-01-19T22:45:009.4536-54.34181257-B-4R-370.9363.82II0.095015.50.00001
207-1257B2003-01-19T22:45:009.4536-54.34181257-B-5R-376.7073.65II0.104015.00.00017
207-1257B2003-01-19T22:45:009.4536-54.34181257-B-7R-295.6091.23III0.075015.00.00078
207-1257B2003-01-19T22:45:009.4536-54.34181257-B-8R-3107.22103.79III0.086014.1
207-1257B2003-01-19T22:45:009.4536-54.34181257-B-9R-3113.79112.02III0.107018.20.00088
207-1257A2003-01-15T14:30:009.4538-54.34201257-A-14X-4117.70117.70III0.135020.10.00085
207-1257B2003-01-19T22:45:009.4536-54.34181257-B-10R-3125.68123.10III0.11200.00080
207-1257A2003-01-15T14:30:009.4538-54.34201257-A-15X-5128.49128.90III0.100017.60.00110
207-1257B2003-01-19T22:45:009.4536-54.34181257-B-11R-4135.28132.70III0.168020.20.00160
207-1257B2003-01-19T22:45:009.4536-54.34181257-B-12R-3143.27140.60III0.087018.9
207-1257B2003-01-19T22:45:009.4536-54.34181257-B-13R-4154.90151.70III0.04808.30.39900
207-1257C 2003-01-21T13:20:009.4534-54.34161257-C-8R-6159.95157.50III0.04708.60.01240
207-1257A2003-01-15T14:30:009.4538-54.34201257-A-18X-4161.96156.16III0.05469.90.25000
207-1257C2003-01-21T13:20:009.4534-54.34161257-C-9R-6168.56166.15III0.048010.60.20200
207-1257C2003-01-21T13:20:009.4534-54.34161257-C-10R-1172.21169.80III0.04407.80.35500
207-1257C2003-01-21T13:20:009.4534-54.34161257-C-12R-2192.65190.10IV0.085024.91.620001.6231.00.45
207-1257C2003-01-21T13:20:009.4534-54.34161257-C-13R-2202.75200.20IV0.03136.50.470000.4662.00.81
207-1257C2003-01-21T13:20:009.4534-54.34161257-C-15R-3221.53218.98IV0.01202.30.460000.45106.00.95
207-1257B2003-01-19T22:45:009.4536-54.34181257-B-27R-3228.94225.30V0.164049.51.700001.701.00.00
207-1257C2003-01-21T13:20:009.4534-54.34161257-C-16R-6237.50233.87V0.193074.41.080001.081.00.00
207-1257A2003-01-15T14:30:009.4538-54.34201257-A-31X-1281.61275.81V0.2799140.41.060001.061.00.00