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Data Publisher for Earth & Environmental Science

Starr, Aidan; Hall, Ian R; Ziegler, Martin (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 Jose; 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
Further details:
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
Ziegler, Martin; Diz, Paula; Hall, Ian R; Zahn, Rainer (2013): Millennial-scale changes in atmospheric CO2 levels linked to the Southern Ocean carbon isotope gradient and dust flux. Nature Geoscience, 6(6), 457-461, https://doi.org/10.1038/ngeo1782
Coverage:
Median Latitude: -41.327120 * Median Longitude: 25.365720 * 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
Size:
2 datasets

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