ESR-DATING OF THE ARCTIC SEDIMENT CORE PS1535 DOSE-RESPONSE AND THERMAL BEHAVIOUR OF THE CO2--SIGNAL IN FORAMINIFERA
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dc.contributor.author | Hoffmann D. | |
dc.contributor.author | Woda C. | |
dc.contributor.author | Strobl C. | |
dc.contributor.author | Mangini A. | |
dc.date.accessioned | 2021-02-09T10:08:07Z | |
dc.date.available | 2021-02-09T10:08:07Z | |
dc.date.issued | 2001 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=540955 | |
dc.identifier.citation | Quaternary Science Reviews, 2001, 20, 5-9, 1009-1014 | |
dc.identifier.issn | 0277-3791 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/24543 | |
dc.description.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 190ka. | |
dc.subject | ESR-dating | |
dc.subject | foraminifera | |
dc.title | ESR-DATING OF THE ARCTIC SEDIMENT CORE PS1535 DOSE-RESPONSE AND THERMAL BEHAVIOUR OF THE CO2--SIGNAL IN FORAMINIFERA | |
dc.type | Статья |
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