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de Abreu, Lucia; Shackleton, Nicholas J; Schönfeld, Joachim; Hall, Michael A; Chapman, Mark R (2003): Planktonic foraminifera, stable isotope record and temperature reconstruction of sediment core MD95-2040. PANGAEA,, In supplement to: de Abreu, L et al. (2003): Millenial-scale oceanic climate variability off the Western Iberian margin during the last two glacial periods. Marine Geology, 196(1-2), 1-20,

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International Marine Global Change Study (IMAGES)
Latitude: 40.581833 * Longitude: -9.861167
Date/Time Start: 1995-07-07T00:00:00 * Date/Time End: 1995-07-07T00:00:00
Minimum DEPTH, sediment/rock: 0.02 m * Maximum DEPTH, sediment/rock: 21.20 m
MD95-2040 (MD952040) * Latitude: 40.581833 * Longitude: -9.861167 * Date/Time: 1995-07-07T00:00:00 * Elevation: -2465.0 m * Recovery: 35 m * Location: Porto Seamount * Campaign: MD101 (IMAGES I) * Basis: Marion Dufresne * Device: Calypso Corer (CALYPSO) * Comment: XXIV Sections, core bent; section IIb jamed in the bent part of the core, recuperated in 1/2 liner
Stable isotope measurements were generally made on 30 specimens of the planktonic foraminifera species Globigerina bulloides picked from the 250-355 µm size fraction. Before analysis, the forams were treated with a 3 % solution of hydrogen peroxide to remove traces of organic contaminants, crushed and cleaned using an ultrasonic generator, rinsed in acetone and oven dried at 50°C. Depending on the sample size, they were analysed using different mass spectrometers and preparation systems. The larger samples were reacted with 100 % orthophosphoric acid at 90oC using a VG Isotech Isocarb common acid bath system, and the carbon dioxide produced during this reaction was then analysed by a VG Isotech SIRA - Series II mass spectrometer. For the smaller samples (less than100 micrograms) analyses were performed using a PRISM mass spectrometer with a Micromass Multicarb sample preparation system. The results were calibrated to VPDB using the repeated analysis of an internal carbonate standard (Carrara Marble). The analytical precision was better than 0.08 per mil (1s ) for oxygen and 0.06 per mil (1s ) for carbon (internal standard). The standard deviation of the analysis for replicate samples is s = 0.14 per mil for the d18O and s = 0.08 per mil for the d13C.
#NameShort NameUnitPrincipal InvestigatorMethodComment
1DEPTH, sediment/rockDepthmGeocode
2AGEAgeka BPGeocode
3Globigerina bulloides, d18OG. bulloides d18Oper mil PDBde Abreu, LuciaIsotope ratio mass spectrometry
4Globigerina bulloides, d13CG. bulloides d13Cper mil PDBde Abreu, LuciaIsotope ratio mass spectrometry
5Neogloboquadrina pachyderma sinistralN. pachyderma s%de Abreu, LuciaCounting >150 µm fraction
6QuartzQz%de Abreu, LuciaCounting >150 µm fraction
7Carbonate, detritic/terrigenicCarb detr%de Abreu, LuciaCounting >150 µm fractiondetrital
8Volcanic componentsVolcanic%de Abreu, LuciaCounting >150 µm fraction
9ForaminiferaForam%de Abreu, LuciaCounting >150 µm fraction
10Ice rafted debrisIRD%de Abreu, LuciaCounting >150 µm fraction
11Terrigenic mineralsTerr mine#/gde Abreu, LuciaCounting >150 µm fraction
12Sea surface temperature, summerSST sum°Cde Abreu, LuciaModern analog technique (MAT), SIMMAX28
13Foraminifera, planktic, arcticForam plankt arctic%de Abreu, LuciaCounting >150 µm fraction
14Foraminifera, planktic, subpolarForam plankt subpolar%de Abreu, LuciaCounting >150 µm fractionsub-polar
15Foraminifera, planktic, subtropicalForam plankt subtropical%de Abreu, LuciaCounting >150 µm fractionTemperate/cold subtropical
16Foraminifera, planktic, subtropicalForam plankt subtropical%de Abreu, LuciaCounting >150 µm fractionwarm subtropical
17Foraminifera, planktic, tropicalForam plankt tropical%de Abreu, LuciaCounting >150 µm fraction
10600 data points

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