Curry, William B; Oppo, Delia W (2005): (Table S1) Stable carbon and oxygen isotope ratios of benthic foraminifera of the western Atlantic Ocean [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.837321, Supplement to: Curry, WB; Oppo, DW (2005): Glacial water mass geometry and the distribution of d13C of SumCO2 in the western Atlantic Ocean. Paleoceanography, 20(1), PA1017, https://doi.org/10.1029/2004PA001021
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Abstract:
Oxygen and carbon isotopic data were produced on the benthic foraminiferal taxa Cibicidoides and Planulina from 25 new piston cores, gravity cores, and multicores from the Brazil margin. The cores span water depths from about 400 to 3000 m and intersect the major water masses in this region. These new data fill a critical gap in the South Atlantic Ocean and provide the motivation for updating the classic glacial western Atlantic d13C transect of Duplessy et al. (1988). The distribution of 13C of SumCO2 requires the presence of three distinct water masses in the glacial Atlantic Ocean: a shallow (~1000 m), southern source water mass with an end-member d13C value of about 0.3–0.5 per mil VPDB, a middepth (~1500 m), northern source water mass with an end-member value of about 1.5 per mil, and a deep (>2000 m), southern source water with an end-member value of less than -0.2 per mil, and perhaps as low as the -0.9 per mil values observed in the South Atlantic sector of the Southern Ocean (Ninnemann and Charles, 2002, doi:10.1016/S0012-821X(02)00708-2). The origins of the water masses are supported by the meridional gradients in benthic foraminiferal d18O. A revised glacial section of deep water d13C documents the positions and gradients among these end-member intermediate and deep water masses. The large property gradients in the presence of strong vertical mixing can only be maintained by a vigorous overturning circulation.
Coverage:
Median Latitude: -27.524982 * Median Longitude: -46.230654 * South-bound Latitude: -28.867330 * West-bound Longitude: -46.843830 * North-bound Latitude: -26.391170 * East-bound Longitude: -45.531330
Date/Time Start: 1998-10-08T00:00:00 * Date/Time End: 1998-11-03T00:00:00
Minimum DEPTH, sediment/rock: 0.0000 m * Maximum DEPTH, sediment/rock: 16.6400 m
Event(s):
KNR159-10 * Latitude: -26.481000 * Longitude: -45.927330 * Date/Time: 1998-10-09T00:00:00 * Elevation: -630.0 m * Recovery: 3.54 m * Location: Western Atlantic * Campaign: KN159-5 (KNR159-5) * Basis: Knorr * Method/Device: Giant gravity corer (GGC)
KNR159-14 * Latitude: -26.680670 * Longitude: -46.448670 * Date/Time: 1998-10-09T00:00:00 * Elevation: -441.0 m * Recovery: 3.36 m * Location: Western Atlantic * Campaign: KN159-5 (KNR159-5) * Basis: Knorr * Method/Device: Giant gravity corer (GGC)
KNR159-15 * Latitude: -27.703500 * Longitude: -46.504330 * Date/Time: 1998-10-10T00:00:00 * Elevation: -1604.0 m * Recovery: 0.44 m * Location: South Atlantic Ocean * Campaign: KN159-5 (KNR159-5) * Basis: Knorr * Method/Device: MultiCorer (MUC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | Elevation of event | Elevation | m | |||
| 5 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 6 | Foraminifera, benthic δ13C | Foram benth δ13C | ‰ PDB | Curry, William B | with respect to VPDB, Cibicidoides and Planulina, no corrections have been made for presumed vital effect offsets | |
| 7 | Foraminifera, benthic δ18O | Foram benth δ18O | ‰ PDB | Curry, William B | with respect to VPDB, Cibicidoides and Planulina, no corrections have been made for presumed vital effect offsets | |
| 8 | Comment | Comment | Curry, William B |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2593 data points
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