Emeis, Kay-Christian; Struck, Ulrich (2022): Continuous data of Globigerinoides ruber calcite delta18O and delta13C versus PDB at ODP Site 969 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.945384
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Samples were obtained from either those taken aboard JOIDES Resolution during Leg 160 or in the Bremen Ocean Drilling Program (ODP) Core Repository. On the ship, approximately one-quarter of a core in sapropel intervals and the surrounding sediments was sliced off the working halves, wrapped in plastic, and stored frozen until shipping. In the shore-based laboratory, the quarter cores were cut in 1-cm subsamples and freeze dried. Samples taken in the Core Repository consisted of 1-cm sediment intervals across sapropels and adjoining sediments collected with plastic scoops, which were also freeze dried upon arrival in Warnemünde. For each sample, we calculated the revised meters composite depth (rmcd) below seafloor based on the tables provided by Sakamoto et al. (1998).
The freeze-dried samples (~2-4 g dry weight) were subsequently split into subsamples. Two grams were wet sieved to obtain the >63-μm fraction, and the residue was used to pick up to 20 tests (sometimes samples were barren or contained less than 20 tests) of the planktonic foraminifer Globigerinoides ruber (white) for isotope analyses. This species is a shallow-dwelling planktonic foraminifer and the isotope signal of the calcite tests records global ice-volume variations, salinity, and temperature near the sea surface. The isotopic composition of oxygen and carbon in the calcite was analyzed with a Finigan MAT 251 mass spectrometer, and the measurement was calibrated against the Peedee Belemnite (PDB) reference scale through international isotope standards. The isotopic results are expressed in the usual notation delta = (Rs/Rst -1) * 1000, with Rs and Rst denoting the 13C/12C or 18O/16O ratios in the sample CO2 and the international standard, respectively. The standard deviation of the isotope analyses is ±0.02‰.
Age for each sample was calculated by linear interpolation between stratigraphic fix points (sapropel bases) as described in Emeis et al., (2003).
Because of limited sample material, we were not able to perform all analyses on all sapropels.
Related to:
Emeis, Kay-Christian; Schulz, Hartmut; Struck, Ulrich; Rossignol-Strick, Martine; Erlenkeuser, Helmut; Howell, M W; Kroon, Dick; Mackensen, Andreas; Ishizuka, S; Oba, Tadamichi; Sakamoto, Tatsuhiko; Koizumi, Itaru (2003): Eastern Mediterranean surface water temperatures and d18O composition during deposition of sapropels in the late Quaternary. Paleoceanography, 18(1), 1005, https://doi.org/10.1029/2000PA000617
Sakamoto, Tatsuhiko; Janecek, Thomas R; Emeis, Kay-Christian (1998): Continuous sedimentary sequences from the Eastern Mediterranean Sea: composite depth sections. In: Robertson, AHF; Emeis, K-C; Richter, C; Camerlenghi, A (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, 160: College Station, TX (Ocean Drilling Program), 160, 37-59, https://doi.org/10.2973/odp.proc.sr.160.053.1998
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 33.841400 * Longitude: 24.882700
Date/Time Start: 1995-04-16T15:20:00 * Date/Time End: 1995-04-16T23:06:00
Minimum DEPTH, sediment/rock: 0.00 m * Maximum DEPTH, sediment/rock: 9.10 m
Event(s):
160-969F * Latitude: 33.841400 * Longitude: 24.882700 * Date/Time Start: 1995-04-16T15:20:00 * Date/Time End: 1995-04-16T23:06:00 * Elevation: -2199.0 m * Penetration: 19 m * Recovery: 19.46 m * Location: Eastern Basin * Campaign: Leg160 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 2 cores; 19 m cored; 0 m drilled; 102.4 % recovery
Parameter(s):
# | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
---|---|---|---|---|---|---|
1 | Sample code/label | Sample label | Emeis, Kay-Christian | DSDP/ODP/IODP sample designation | ||
2 | DEPTH, sediment/rock | Depth sed | m | Emeis, Kay-Christian | Geocode | |
3 | Depth, composite revised | Depth comp r | rmcd | Emeis, Kay-Christian | ||
4 | AGE | Age | ka BP | Emeis, Kay-Christian | Geocode | |
5 | Globigerinoides ruber, δ13C | G. ruber δ13C | ‰ PDB | Emeis, Kay-Christian | Mass spectrometer Finnigan MAT 251 | |
6 | Globigerinoides ruber, δ18O | G. ruber δ18O | ‰ PDB | Emeis, Kay-Christian | Mass spectrometer Finnigan MAT 251 |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
636 data points