(Table 1) Radionuclides and ESR dating of sediment cores PS1535-10 and PS1535-8, supplementary data to: Hoffmann, Dirk; Woda, Clemens; Strobl, Christopher; Mangini, Augusto (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
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 tr...
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| Main Authors: | , , |
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| Other Authors: | |
| Format: | Book/Monograph Research Data |
| Language: | English |
| Published: |
Bremen/Bremerhaven
PANGAEA - Data Publisher for Earth & Environmental Science
2001-04-13
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| DOI: | 10.1594/PANGAEA.120604 |
| Subjects: | |
| Online Access: | Resolving-System, Volltext: http://dx.doi.org/10.1594/PANGAEA.120604 Resolving-System, Volltext: http://nbn-resolving.de/urn:nbn:de:tib-10.1594/PANGAEA.1206049 
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| 245 | 1 | 0 | |a (Table 1) Radionuclides and ESR dating of sediment cores PS1535-10 and PS1535-8, supplementary data to: Hoffmann, Dirk; Woda, Clemens; Strobl, Christopher; Mangini, Augusto (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 |
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| 520 | |a 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. | ||
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