Hoffmann, Dirk L; Woda, Clemens; Strobl, Christopher; Mangini, Augusto (2001): (Table 1) Radionuclides and ESR dating of sediment cores PS1535-10 and PS1535-8 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.120604, Supplement to: Hoffmann, DL et al. (2001): ESR-dating of the Arctic sediment core PS1535 dose-response and thermal behaviour of the CO-2-signal in foraminifera. Quaternary Science Reviews, 20(5-9), 1009-1014, https://doi.org/10.1016/S0277-3791(00)00059-7
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Abstract:
ESR-spectra of foraminifera in arctic sediment cores display the [CO2]- -signal (g=2.0006). Research on the thermal behaviour of the [CO2]- -signal shows that both natural and artificial irradiation generates a precursor and a thermal unstable component of the [CO2]- -signal. The precursor can be transfered to the stable radical, and unstable radicals can be removed by heating. The signal-change by heating depends on the irradiation dose. Because of the varying response on thermal treatment, the dose-response curves show systematic differences depending on the applied procedure (single- or multi-aliquot method with or without heating). A model for the description of the [CO2]- -signal-change is presented. The combination of two exponential saturation functions seems to be an adequate analytical description of the dose-response curve of the [CO2]- -signal in foraminifera. Due to the limited thermal stability this signal can be used for dating foraminifera with ages up to about 190 ka.
Coverage:
Latitude: 78.738330 * Longitude: 1.940000
Date/Time Start: 1987-08-24T00:00:00 * Date/Time End: 1987-08-24T00:00:00
Minimum DEPTH, sediment/rock: 0.37 m * Maximum DEPTH, sediment/rock: 7.00 m
Event(s):
PS1535-10 (GIK21535-10 PS11/430-10) * Latitude: 78.738330 * Longitude: 1.940000 * Date/Time: 1987-08-24T00:00:00 * Elevation: -2555.0 m * Recovery: 8.13 m * Location: Fram Strait * Campaign: ARK-IV/3 (PS11) * Basis: Polarstern * Method/Device: Piston corer (BGR type) (KL) * Comment: 9 core sections: 0-0.87, 0.87-1.87, 1.87-2.87, 2.87-3.18, 3.18-4.18, 4.18-5.18, 5.18-6.18, 6.18-7.18, 7.18-8.13 m
Comment:
Samples at 0.37-4.63 from core PS1535-8, samples at 5.48 and 7 m from core PS1535-10
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
162 data points
Data
| 1 Depth sed [m] | 2 Age model opt [ka] | 3 Method comm | 4 De [Gy] | 5 D std dev [±] | 6 232Th [dpm/g] | 7 232Th std dev [±] | 8 230Th [dpm/g] | 9 230Th std dev [±] | 10 238U [dpm/g] | 11 238U std dev [±] | 12 (234U/238U) | 13 (234U/238U) std dev [±] | 14 K [%] | 15 K std dev [±] | 16 Water wm [%] | 17 Water std dev [±] | 18 Age dated [ka] | 19 Age dated std dev [±] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.37 | 19.6 | Single-aliquot | 42.9 | 0.8 | 2.77 | 0.11 | 3.66 | 0.13 | 1.66 | 0.10 | 0.94 | 0.09 | 2.90 | 0.2 | 69.50 | 6.0 | 21.8 | 2 |
| 0.77 | 29.7 | Single-aliquot | 70.7 | 1.4 | 2.63 | 0.12 | 4.63 | 0.14 | 1.59 | 0.11 | 0.96 | 0.10 | 2.69 | 0.2 | 65.61 | 6.5 | 30.8 | 2 |
| 3.15 | 123.0 | Multi-aliquot | 318.5 | 25.1 | 2.79 | 0.12 | 3.52 | 0.14 | 1.82 | 0.08 | 0.89 | 0.06 | 2.72 | 0.2 | 59.98 | 5.5 | 130.6 | 10 |
| 3.79 | 135.0 | Single-aliquot | 306.8 | 18.3 | 2.64 | 0.10 | 3.35 | 0.12 | 3.19 | 0.15 | 1.02 | 0.07 | 2.62 | 0.2 | 48.04 | 5.0 | 137.0 | 11 |
| 3.79 | 135.0 | Multi-aliquot | 323.0 | 29.5 | 2.64 | 0.10 | 3.35 | 0.12 | 3.19 | 0.15 | 1.02 | 0.07 | 2.62 | 0.2 | 48.04 | 5.0 | 148.0 | 17 |
| 4.63 | 154.0 | Single-aliquot | 301.7 | 17.6 | 2.44 | 0.10 | 2.86 | 0.10 | 1.85 | 0.11 | 1.07 | 0.06 | 2.59 | 0.2 | 41.48 | 4.6 | 130.0 | 10 |
| 4.63 | 154.0 | Multi-aliquot | 370.8 | 30.5 | 2.44 | 0.10 | 2.86 | 0.10 | 1.85 | 0.11 | 1.07 | 0.06 | 2.59 | 0.2 | 41.48 | 4.6 | 154.0 | 14 |
| 5.48 | 190.0 | Single-aliquot | 387.8 | 28.5 | 2.93 | 0.20 | 2.23 | 0.20 | 1.77 | 0.10 | 0.94 | 0.10 | 2.70 | 0.2 | 50.00 | 5.0 | 191.0 | 20 |
| 7.00 | 282.0 | Single-aliquot | 416.6 | 31.8 | 2.35 | 0.20 | 1.61 | 0.12 | 1.50 | 0.10 | 1.01 | 0.10 | 2.25 | 0.2 | 50.00 | 5.0 | 243.0 | 30 |