Starr, Aidan; Hall, Ian R; Ziegler, Martin (2020): Pleistocene benthic stable isotopes and ice-rafted debris from the Agulhas Plateau Composite (APcomp) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.921111, In: Starr, A et al. (2020): Pleistocene benthic stable isotopes and and age-depth model from the Agulhas Plateau Composite (APcomp) [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.921315
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Abstract:
The Agulhas Plateau composite (APcomp) is a stratigraphic framework made up of sediment core sites MD02-2588 (41 19.90'S, 25 49.7'E, 2907m) and IODP Site U1475 (41 25.6'S, 25 15.6'E, 2669m). Stable isotope measurements were performed on 2-3 Cibicidoides wuellerstorfi specimens (250-315μm size fraction) and made on a Thermo Finnigan MAT 253 mass spectrometer linked online to a Carbo Kiel carbonate preparation device at Cardiff University with long-term precision of ±0.05‰ for δ18O and ±0.021‰ for δ13C (±1σ). Results are calibrated to an internal laboratory standard (BCT63) and presented relative to the Vienna Pee Dee Belemnite scale. IRD is defined as detrital mineral grains (excluding volcanic ash) >150μm. IRD is normalized to sample weight (IRD concentration in #/g) and then multiplication by apparent bulk mass accumulation rate derived from estimates of dry bulk density and linear sedimentation rate.
Supplement to:
Starr, Aidan; Hall, Ian R; Barker, Stephen; Rackow, Thomas; Zhang, Xu; Hemming, Sidney R; van der Lubbe, H J L; Knorr, Gregor; Berke, Melissa A; Bigg, Grant R; Cartagena, Alejandra; Jiménez-Espejo, Francisco Jose; Gong, Xun; Gruetzner, Jens; Lathika, Nambiyathodi; LeVay, Leah J; Robinson, Rebecca S; Ziegler, Martin; IODP Expedition 361 Scientists (accepted): Antarctic Iceberg Melt Potential Trigger for Glacial Deep Water-Mass Reorganizations. Nature
Coverage:
Median Latitude: -41.381600 * Median Longitude: 25.308600 * South-bound Latitude: -41.427000 * West-bound Longitude: 25.260000 * North-bound Latitude: -41.200000 * East-bound Longitude: 25.500000
Date/Time Start: 2002-10-01T00:00:00 * Date/Time End: 2016-02-27T04:15:00
Minimum Elevation: -2907.0 m * Maximum Elevation: -2680.4 m
Event(s):
361-U1475B * Latitude: -41.427000 * Longitude: 25.261000 * Date/Time: 2016-02-24T01:55:00 * Elevation: -2680.5 m * Penetration: 243.9 m * Recovery: 250.31 m * Campaign: Exp361 (South African Climates (Agulhas LGM Density Profile)) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 26 cores, 0 m drilled, 103% recovery
361-U1475C * Latitude: -41.427000 * Longitude: 25.261000 * Date/Time: 2016-02-25T04:55:00 * Elevation: -2680.4 m * Penetration: 275 m * Recovery: 280.7 m * Campaign: Exp361 (South African Climates (Agulhas LGM Density Profile)) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 29 cores, 3 m drilled, 103% recovery
361-U1475E * Latitude: -41.427000 * Longitude: 25.261000 * Date/Time: 2016-02-27T04:15:00 * Elevation: -2682.9 m * Penetration: 277 m * Recovery: 277.2 m * Campaign: Exp361 (South African Climates (Agulhas LGM Density Profile)) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 29 cores, 6.5 m drilled, 102% recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Starr, Aidan | |||
| 2 | Latitude of event | Latitude | Starr, Aidan | |||
| 3 | Longitude of event | Longitude | Starr, Aidan | |||
| 4 | Date/Time of event | Date/Time | Starr, Aidan | |||
| 5 | Sample ID | Sample ID | Starr, Aidan | |||
| 6 | Depth, composite | Depth comp | mcd | Starr, Aidan | Agulhas Plateau Composite scale | |
| 7 | AGE | Age | ka BP | Starr, Aidan | Geocode – median | |
| 8 | Cibicidoides wuellerstorfi, δ18O | C. wuellerstorfi δ18O | ‰ PDB | Starr, Aidan | Mass spectrometer, Thermo Finnigan, MAT 253 | |
| 9 | Cibicidoides wuellerstorfi, δ13C | C. wuellerstorfi δ13C | ‰ PDB | Starr, Aidan | Mass spectrometer, Thermo Finnigan, MAT 253 | |
| 10 | Ice rafted debris | IRD | #/g | Starr, Aidan | grains >150 µm per gram sediment | |
| 11 | Cibicidoides wuellerstorfi, δ18O | C. wuellerstorfi δ18O | ‰ PDB | Starr, Aidan | Mass spectrometer, Thermo Finnigan, MAT 253 | with 0.64 permille |
| 12 | Sedimentation rate | SR | cm/ka | Starr, Aidan | median | |
| 13 | Density, dry bulk | DBD | g/cm3 | Starr, Aidan | ||
| 14 | Accumulation rate, sediment | MAR | g/cm2/ka | Starr, Aidan | median | |
| 15 | Accumulation rate, ice rafted debris by number | Acc rate IRD | #/cm2/ka | Starr, Aidan | Apparent MAR |
Change history:
2020-11-15T10:02:58 – The depth parameter was changed from "Depth, relative" to "Depth, composite"
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
17745 data points
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