Rashid, Harunur; Hesse, Reinhard; Piper, David J W (2003): (Table 2) Radiocarbon age determination from the polar planktonic foraminifera Neogloboquadrina pachyderma s for sediment core HU90-013-029 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.841370, Supplement to: Rashid, H et al. (2003): Evidence for an additional Heinrich event between H5 and H6 in the Labrador Sea. Paleoceanography, 18(4), 1077, https://doi.org/10.1029/2003PA000913
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Abstract:
An additional Heinrich ice-rafting event is identified between Heinrich events 5 and 6 in eight cores from the Labrador Sea and the northwest Atlantic Ocean. It is characterized by sediment rich in detrital carbonate (40% CaCO3) with high concentration of floating dropstones, high coarse-fraction (% > 150 µm) content, and has a sharp contact with the underlying but grades into the overlying hemipelagic sediment. It also shows lighter d18ONpl values, indicating freshening due to iceberg rafting and/or meltwater discharge. This event is correlated with Dansgaard-Oeschger event 14 and interpreted as an additional Heinrich event, H5a. The thickness of H5a in the Labrador Sea reaches up to 220 cm. This additional Heinrich event has also been reported in cores PS2644 and SO82-5 from the northern North Atlantic. With the recognition of H5a the temporal spacing between Heinrich events 1 to 6 becomes more uniform (~7 ka).
Further details:
Bard, Edouard (1988): Correction of accelerator mass spectrometry 14C ages measured in planktonic foraminifera: Paleoceanographic implications. Paleoceanography, 3(6), 635-645, https://doi.org/10.1029/PA003i006p00635
Bard, Edouard; Arnold, Maurice; Fairbanks, Richard G; Hamelin, Bruno (1993): Thorium-230/uranium-234 and carbon-14 ages obtained by mass spectrometry on corals. Radiocarbon, 35(1), 191-199, https://doi.org/10.1017/S0033822200013886
Beck, J Warren; Richards, David A; Edwards, R Lawrence; Silverman, Bernard W; Smart, Peter L; Donahue, Douglas J; Hererra-Osterheld, Sofia; Burr, George S; Calsoyas, Leal; Jull, A J Timothy; Biddulph, Dana (2001): Extremely Large Variations of Atmospheric 14C Concentration During the Last Glacial Period. Science, 292(5526), 2453-2458, https://doi.org/10.1126/science.1056649
Laj, Carlo E; Kissel, Catherine; Mazaud, Alain; Channell, James E T; Beer, Jürg (2000): North Atlantic palaeointensity stack since 75ka (NAPIS-75) and the duration of the Laschamp event. Philosophical Transactions of the Royal Society A-Mathematical Physical and Engineering Sciences, 358(1768), 1009-1025, https://doi.org/10.1098/rsta.2000.0571
Stuiver, Minze; Reimer, Paula J; Bard, Edouard; Beck, J Warren; Burr, George S; Hughen, Konrad A; Kromer, Bernd; McCormac, F Gerry; van der Plicht, Johannes; Spurk, Marco (1998): INTCAL98 radiocarbon age calibration, 24,000-0 cal BP. Radiocarbon, 40(3), 1041-1083, https://doi.org/10.1017/S0033822200019123
Coverage:
Latitude: 58.240000 * Longitude: -56.460000
Minimum DEPTH, sediment/rock: 0.80 m * Maximum DEPTH, sediment/rock: 10.09 m
Event(s):
Comment:
Radiocarbon convention age, -450 years for surface ocean reservoir age, is corrected according to Bard (1988) back to 20 ka (Bard et al., 1993) and back to 50 ka according to the scheme of Laj et al. (2000). Ages marked with * appear too young to be considered real and were discarded. Radiocarbon dates younger than 24 ka are converted to calendar age according to the CALIB4.3 program (Stuiver et al., 1998) and ages between 24 and 40 ka BP are calibrated according to the scheme of Beck et al. (2001), respectively.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Laboratory code/label | Lab label | Rashid, Harunur | |||
| 2 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 3 | Age, dated material | Dated material | Rashid, Harunur | |||
| 4 | Sample mass | Samp m | mg | Rashid, Harunur | ||
| 5 | Age, dated | Age dated | ka | Rashid, Harunur | Age, 14C AMS | |
| 6 | Age, dated standard error | Age std e | ± | Rashid, Harunur | Age, 14C AMS | |
| 7 | Calendar age | Cal age | ka BP | Rashid, Harunur | Age, 14C calibrated | |
| 8 | Calendar age | Cal age | ka BP | Rashid, Harunur | Age, 14C calibrated | Stuiver et al. (1998) |
| 9 | Calendar age | Cal age | ka BP | Rashid, Harunur | Age, 14C calibrated | Beck et al. (2001) |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
78 data points