de Graaf, Friso Marc; Ford, Heather L; Thornalley, David J R; Burls, Natalie J; Brown, Rachel Mary; Foster, Gavin L; Brierley, Chris M: Plio-Pleistocene coupled benthic stable isotope and Mg/Ca measurements from Site 1209 in the Northwest Pacific [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.969149 (dataset in review)
Abstract:
Stable isotopes were measured on benthic foraminifera species Cibicidoides wuellerstorfi from ODP Site 1209 on the Shatsky Rise in the Northwest Pacific Ocean. Approximately 5 – 7 specimens were analysed at c. 4cm resolution along the core from 33 m - 58 m depth along the core for both oxygen and carbon isotopes using a VG ISOGAS SIRE dual inlet isotope ratio mass spectrometer at the Godwin Laboratory for Palaeoclimate Research at the University of Cambridge. For the section between 34 - 43 m depth along the core, Mg/Ca ratios were measured on the benthic foraminifera species Uvigerina peregrina. The samples underwent a modified reductive and oxidative cleaning process described in Boyle and Kegwin, 1982 and Barker et al., 2003 respectively, and were then analysed for trace metals by ICP-MS on a Thermo-Scientific Element 2 at the University of Southampton. The coupled stable isotopes and Mg/Ca measurements were converted to bottom-water temperature and seawater d18O values using the PSU Solver model of Thirumalai et al., 2017. Samples were put on an age model using a bayesian tie-point algorithm which matched oxygen isotope values to that of the ProbStack record of Ann et al., 2017.
References:
Ahn, Seonmin; Khider, D; Lisiecki, Lorraine E; Lawrence, Charles E (2017): A probabilistic Pliocene–Pleistocene stack of benthic δ18O using a profile hidden Markov model. Dynamics and Statistics of the Climate System, 2(1), https://doi.org/10.1093/climsys/dzx002
Barker, S; Greaves, Mervyn; Elderfield, Henry (2003): A study of cleaning procedures used for foraminiferal Mg/Ca paleothermometry. Geochemistry, Geophysics, Geosystems, 4(9), https://doi.org/10.1029/2003GC000559
Boyle, Edward A; Keigwin, Lloyd D (1985): Comparison of Atlantic and Pacific paleochemical records for the last 215.000 years: changes in deep ocean circulation and chemical inventories. Earth and Planetary Science Letters, 76(1-2), 135-150, https://doi.org/10.1016/0012-821X(85)90154-2
Elderfield, Henry; Ferretti, Patrizia; Greaves, Mervyn; Crowhurst, Simon J; McCave, I Nick; Hodell, David A; Piotrowski, Alexander M (2012): Evolution of ocean temperature and ice volume through the Mid-Pleistocene Climate Transition. Science, 337(6095), 704-709, https://doi.org/10.1126/science.1221294
Thirumalai, Kaustubh; Quinn, Terrence Michael; Marino, Gianluca (2016): Constraining past seawater δ18O and temperature records developed from foraminiferal geochemistry. Paleoceanography, 31(10), 1409-1422, https://doi.org/10.1002/2016PA002970
Project(s):
Ocean Drilling Program (ODP)
Funding:
Natural Environment Research Council (NERC), grant/award no. NE/S007229/1: The London NERC Doctoral Training Partnership 2
Coverage:
Median Latitude: 32.651730 * Median Longitude: 158.505930 * South-bound Latitude: 32.651660 * West-bound Longitude: 158.505930 * North-bound Latitude: 32.651800 * East-bound Longitude: 158.505930
Date/Time Start: 2001-09-18T08:00:00 * Date/Time End: 2001-09-21T07:10:00
Minimum DEPTH, sediment/rock: 30.20 m * Maximum DEPTH, sediment/rock: 53.65 m
Event(s):
198-1209A * Latitude: 32.651660 * Longitude: 158.505930 * Date/Time Start: 2001-09-18T08:00:00 * Date/Time End: 2001-09-19T13:35:00 * Elevation: -2387.2 m * Penetration: 259.6 m * Recovery: 262.27 m * Location: North Pacific Ocean * Campaign: Leg198 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 28 cores; 259.6 m cored; 0 m drilled; 101 % recovery
198-1209B * Latitude: 32.651800 * Longitude: 158.505930 * Date/Time Start: 2001-09-19T13:35:00 * Date/Time End: 2001-09-21T07:10:00 * Elevation: -2387.4 m * Penetration: 298 m * Recovery: 303.17 m * Location: North Pacific Ocean * Campaign: Leg198 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 32 cores; 297.6 m cored; 0.4 m drilled; 101.9 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | de Graaf, Friso Marc | |||
| 2 | DEPTH, sediment/rock | Depth sed | m | de Graaf, Friso Marc | Geocode – mbsf | |
| 3 | Depth, composite | Depth comp | mcd | de Graaf, Friso Marc | ||
| 4 | AGE | Age | ka BP | de Graaf, Friso Marc | Geocode | |
| 5 | Sample code/label | Sample label | de Graaf, Friso Marc | DSDP/ODP/IODP sample designation | ||
| 6 | Cibicidoides wuellerstorfi, δ18O | C. wuellerstorfi δ18O | ‰ PDB | de Graaf, Friso Marc | Mass spectrometer, VG ISOGAS SIRE | vs. VPDB |
| 7 | Cibicidoides wuellerstorfi, δ13C | C. wuellerstorfi δ13C | ‰ PDB | de Graaf, Friso Marc | Mass spectrometer, VG ISOGAS SIRE | vs. VPDB |
| 8 | Uvigerina peregerina, Magnesium/Calcium ratio | U. peregerina Mg/Ca | mmol/mol | de Graaf, Friso Marc | Mass spectrometer, Thermo Scientific, Element 2 | |
| 9 | Bottom water temperature | BWT | °C | de Graaf, Friso Marc | Paleo-Seawater Uncertainty Solver (PSU solver) | modelled; equation from Elderfield et al., 2012 |
| 10 | Bottom water temperature, maximum | BWT max | °C | de Graaf, Friso Marc | Paleo-Seawater Uncertainty Solver (PSU solver) | Upper limit of temperature estimate; 1σ uncertainty |
| 11 | Bottom water temperature, minimum | BWT min | °C | de Graaf, Friso Marc | Paleo-Seawater Uncertainty Solver (PSU solver) | Lower limit of temperature estimate; 1σ uncertainty |
| 12 | δ18O, seawater, reconstructed | δ18Osw | ‰ | de Graaf, Friso Marc | Paleo-Seawater Uncertainty Solver (PSU solver) | |
| 13 | δ18O, seawater, reconstructed, maximum | δ18Osw max | ‰ | de Graaf, Friso Marc | Paleo-Seawater Uncertainty Solver (PSU solver) | Upper limit of seawater δ18O estimate; 1σ uncertainty |
| 14 | δ18O, seawater, reconstructed, minimum | δ18Osw min | ‰ | de Graaf, Friso Marc | Paleo-Seawater Uncertainty Solver (PSU solver) | Lower limit of seawater δ18O estimate; 1σ uncertainty |
| 15 | Comment | Comment | de Graaf, Friso Marc |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
2619 data points
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