The game of radiocarbon dating and calibration

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dc.contributor.authorHua, Qen_AU
dc.date.accessioned2020-06-15T00:58:10Zen_AU
dc.date.available2020-06-15T00:58:10Zen_AU
dc.date.issued2011-03-14en_AU
dc.date.statistics2020-06-01en_AU
dc.description.abstractArchaeologists and geoscientists rely on continuous improvement in radioisotopic chronological techniques to generate accurate and reliable calibration curves by which measured data can be converted into an absolute age scale. Various archives are included in providing radiocarbon data sets for calibration – tree rings, corals, marine and lake sediments, and possibly some speleothems. This has generated a number of calibration curves and statistical age-depth models. The IntCal Radiocarbon Working Group recently released a terrestrial and marine radiocarbon calibration curve (IntCal09 and Marine09) from 0 to 50 ka which effectively spans the full sensitivity of the AMS method. However all archives other than tree rings (0-12 ka of calibration curve) do not reflect contemporary atmospheric 14C content. Dissolved inorganic 14C in corals and forams varies with CO2 exchange at the atmospheric-ocean interface and admixture of 14C depleted carbon from deep upwelling waters. Total 14C in speleothems depends on the admixture of 14C depleted CO2 from soil and/or rock carbonate. Hence a dead-carbon fraction or reservoir correction (modelled or otherwise) must be included to convert measured radiocarbon to atmospheric equivalent prior to inclusion into a universal calibration curve. These complexities, the different calibration curves and web-based program will be discussed and presented.en_AU
dc.identifier.citationHua, Q. (2011). The game of radiocarbon dating and calibration. Paper presented at the Italian - Australian Archaeology and Cultural Heritage Workshop. New scientific techniques in archaeology, palaeo-anthropology and cultural heritage, 14-17 March 2011, Rydges Hotel, Cronulla, Sydney.en_AU
dc.identifier.conferenceenddate17 March 2011en_AU
dc.identifier.conferencenameItalian - Australian Archaeology and Cultural Heritage Workshop. New scientific techniques in archaeology, palaeo-anthropology and cultural heritageen_AU
dc.identifier.conferenceplaceCronulla, Sydneyen_AU
dc.identifier.conferencestartdate14 March 2011en_AU
dc.identifier.govdoc9666en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9660en_AU
dc.language.isoenen_AU
dc.publisherAustralian Nuclear Science and Technology Organisationen_AU
dc.subjectCarbon 14en_AU
dc.subjectCalibrationen_AU
dc.subjectArchaeologyen_AU
dc.subjectAge estimationen_AU
dc.subjectRecords managementen_AU
dc.subjectHistorical aspectsen_AU
dc.subjectDatasetsen_AU
dc.subjectTree ringsen_AU
dc.titleThe game of radiocarbon dating and calibrationen_AU
dc.typeConference Abstracten_AU
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