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Starr, Aidan; Hall, Ian R; Ziegler, Martin (2020): Pleistocene benthic stable isotopes and ice-rafted debris from the Agulhas Plateau Composite (APcomp). PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.921111 (dataset in review), In: Starr, A et al. (2020): Pleistocene benthic stable isotopes and and age-depth model from the Agulhas Plateau Composite (APcomp). PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.921315 (dataset in review)

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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.
Keyword(s):
Agulhas Plateau; Ice-rafted debris; mid-Pleistocene transition
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 J; Gong, Xun; Gruetzner, Jens; Lathika, Nambiyathodi; LeVay, Leah J; Robinson, Rebecca S; Ziegler, Martin; IODP Expedition 361 Scientists (in review): 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):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventStarr, Aidan
2Latitude of eventLatitudeStarr, Aidan
3Longitude of eventLongitudeStarr, Aidan
4Date/Time of eventDate/TimeStarr, Aidan
5Sample IDSample IDStarr, Aidan
6Depth, relativeDepth relmStarr, AidanAgulhas Plateau Composite scale
7AGEAgeka BPStarr, AidanGeocode – median
8Cibicidoides wuellerstorfi, δ18OC. wuellerstorfi δ18O‰ PDBStarr, AidanThermo Finnigan MAT 253 mass spectrometer
9Cibicidoides wuellerstorfi, δ13CC. wuellerstorfi δ13C‰ PDBStarr, AidanThermo Finnigan MAT 253 mass spectrometer
10Ice rafted debrisIRD#/gStarr, Aidangrains >150 µm per gram sediment
11Cibicidoides wuellerstorfi, δ18OC. wuellerstorfi δ18O‰ PDBStarr, AidanThermo Finnigan MAT 253 mass spectrometerwith 0.64 permille
12Sedimentation rateSed ratecm/kaStarr, Aidanmedian
13Density, dry bulkDBDg/cm3Starr, Aidan
14Accumulation rate, sedimentMARg/cm2/kaStarr, Aidanmedian
15Accumulation rate, ice rafted debris by numberAcc rate IRD#/cm2/kaStarr, AidanApparent MAR
Size:
17745 data points

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