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