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The EPR method of dating is based on measurements of the concentration of paramagnetic centres generated by ionising radiation. The age (t) of a given sample is defined as the ratio of the geological dose (AD) to the annual dose (D). The geological dose is determined on the basis of the extrapolation of the EPR signal intensity dependence on the laboratory irradiation dose. The annual dose is the sum of an external (Dext) and internal (Dint) doses. The external dose is measured at the site of sample as intensity of delta radiation. The internal dose is determined by spectroscopic methods on the basis of the concentrations of uranium, thorium and potassium in the sample. This paper reports a determination of the geological dose of cave bear tooth enamel found in the Nietoperzowa Cave (Cracow Plain), performed at the Institute of Physics, Adam Mickiewicz University in Poznań.
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Czasopismo
Rocznik
Tom
Strony
59--64
Opis fizyczny
Bibliogr. 9 poz., rys., tab.
Twórcy
autor
- Department of Medical Physics, Institute of Physics, A. Mickiewicz University, Umułtowska 85, PL-61-614 Poznań, Poland
autor
- Department of Medical Physics, Institute of Physics, A. Mickiewicz University, Umułtowska 85, PL-61-614 Poznań, Poland
autor
- Institute of Geologic Sciences, Polish academy of Sciences, Twarda 51/55, PL 00-818 Warsaw, Poland
Bibliografia
- 1. Bahain J. J., Yokoyama Y, Falgueres C. and Sarcia M. N. 1991:HSR Dating of Tooth Enamel: A Comparison wiih K-Ar Daring. Quaiemary Science Rewews 11: 245-250.
- 2. Blackwell B., Porat N., Schwarcz H. P. and Debenath A. 1991: ESR Dating of Tooth Enamel: Comparison wiih 2MTVJMU Speleothem Dates at La Chaise-De-Vouthon (Charente), France. Qtuuernary Science Reviexvs 11: 231-244.
- 3. Hercman H. 1991; Rekonstrukcja elementów środowiska geologicznego Tatr Zachodnich na podstawie datowania izotopowego nacieków jaskiniowych (Reconstruction of some elements of the geological environment of the western Tatra Mountains on the basis of isotope dating of caye dripstones). Zeszyty Nauk. Politechniki Śląskiej, Seria Matematyka-Fizyka, Z. 66, Geochronometria 8: 19-41.
- 4. Ikeya M., 1978: Electron Spin Resonance as a Method of Dating. Archeometry 20: 2.
- 5. Ikeya M., and Ohmura K., 1983: Comparison of ESR ages of corals from marine terraces wiih 14C and :230Th/234U ages. Earth and Planetary Science Letters 65: 34-38.
- 6. Kęcki Z., 1972: Podstawy spektroskopii molekularnej (The fundamenials of molecular spectroscopy). PWN, Warszawa.
- 7. Madeyska-Niklewska T, 1969: Górnoplejstoceńskie osady jaskiń Wyżyny Krakowskiej (The Upper Pleistocene de-posits in caves of the Cracow Upland). Acta Geologica Polonica XIX(2): 341-392.
- 8. Smart P. L. and Frances P. D.1991: Quaternary Dating Methods-A User's Guide, Quaternary Research Association, Cambridge: 128-160.
- 9. Swank R. K., 1964: Color Centers in X-irradiated Halophosphate Crystals. Physical Review 135(1): A266-A267
Typ dokumentu
Bibliografia
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bwmeta1.element.baztech-article-BAT3-0035-0023