Assessment of interlaboratory pretreatment protocols by radiocarbon dating an elk bone found below laacher see Tephra at Miesenheim IV (Rhineland, Germany)

Fiedel S.J.; Southon J.R.; Taylor R.E.; Kuzmin Y.V.; Street M.; Higham T.F.G.; van der Plicht J.; Nadeau M.-J.; Nalawade-Chavan S.

doi:10.2458/azu_js_rc.55.16239

Инд. авторы:	Fiedel S.J., Southon J.R., Taylor R.E., Kuzmin Y.V., Street M., Higham T.F.G., van der Plicht J., Nadeau M.-J., Nalawade-Chavan S.
Заглавие:	Assessment of interlaboratory pretreatment protocols by radiocarbon dating an elk bone found below laacher see Tephra at Miesenheim IV (Rhineland, Germany)
Библ. ссылка:	Fiedel S.J., Southon J.R., Taylor R.E., Kuzmin Y.V., Street M., Higham T.F.G., van der Plicht J., Nadeau M.-J., Nalawade-Chavan S. Assessment of interlaboratory pretreatment protocols by radiocarbon dating an elk bone found below laacher see Tephra at Miesenheim IV (Rhineland, Germany) // Radiocarbon. - 2013. - Vol.55. - Iss. 2-3. - P.1443-1453. - ISSN 0033-8222. - EISSN 1945-5755.
Внешние системы:	DOI: 10.2458/azu_js_rc.55.16239; SCOPUS: 2-s2.0-84884373696;
Реферат:	eng: Four accelerator mass spectrometry (AMS) facilities undertook an interlaboratory exercise designed to examine the reliability and reproducibility of radiocarbon determinations on bone by dating a sample of elk (Alces alces) from Miesenheim IV. This specimen is derived from a secure geological context directly beneath the Laacher See tephra, which provides a precise terminus ante quem of ~11,060 yr BP (~13,050 cal yr BP). Regrettably, the results of the intercomparison exercise were complicated by evident contamination of the bone sample by exogenous organic material. This contaminant, probably humic acid, resulted in a wide span of ages (10,010 ± 30 to 11,100 ± 45 BP). The only method that yielded an accurate determination, consistent with the age of the tephra, was Oxford's single amino acid technique, which targets hydroxyproline. An acid hydrolysis step seems to have been crucial in breaking the bonds between the bone collagen and the contaminant. © 2013 by the Arizona Board of Regents on behalf of the University of Arizona.
Ключевые слова:	Alces alces; Rhineland; Germany; reliability analysis; radiocarbon dating; interlaboratory comparison; humic acid; collagen; bone; accelerator mass spectrometry; Late Glacial; Inter-lab test; Collagen dating;
Издано:	2013
Физ. характеристика:	с.1443-1453