Radiocarbon, Volume 47, Number 2 (2005)
http://hdl.handle.net/10150/635087
2024-03-28T15:03:40ZObituary (Paul Damon, 1921-2005)
http://hdl.handle.net/10150/655259
Obituary (Paul Damon, 1921-2005)
Jull, A. J. Timothy; Barbetti, Mike; Haynes, Vance
2005-01-01T00:00:00ZUse of Three Isotopes to Calibrate Human Bone Radiocarbon Determinations from Kainapirina (SAC), Watom Island, Papua New Guinea
http://hdl.handle.net/10150/653783
Use of Three Isotopes to Calibrate Human Bone Radiocarbon Determinations from Kainapirina (SAC), Watom Island, Papua New Guinea
Petchey, Fiona; Green, Roger
In archaeological dating, the greatest confidence is usually placed upon radiocarbon results of material that can be directly related to a defined archaeological event. Human bone should fulfill this requirement, but bone dates obtained from Pacific sites are often perceived as problematic due to the incorporation of 14C from a range of different reservoirs into the collagen via diet. In this paper, we present new human bone gelatin results for 2 burials from the SAC archaeological site on Watom Island, Papua New Guinea, and investigate the success of calibrating these determinations using dietary corrections obtained from d34S, d15N, and d13C isotopes.
2005-01-01T00:00:00ZThe Neolithic Site of Serra Cicora: Results of the AMS Radiocarbon Dating
http://hdl.handle.net/10150/653763
The Neolithic Site of Serra Cicora: Results of the AMS Radiocarbon Dating
Quarta, G.; DElia, M.; Vallo, E.; Tiberi, I.; Calcagnile, L.
Bone and charcoal samples from the Neolithic site of Serra Cicora in the Salento Peninsula (southern Italy) have been dated by accelerator mass spectrometry (AMS). Measurements appear to support other archaeological evidence and have shown that 2 distinct phases of human occupation of the site can be identified: the first occupation in the Early Neolithic and a second occupation in the Middle-Late Neolithic. The results provide new information and are a fundamental contribution to the definition of the absolute chronology of the Middle-Late Neolithic in this part of Europe.
2005-01-01T00:00:00ZSimultaneously Measuring 14C and Radon in Benzene Dating Samples
http://hdl.handle.net/10150/653738
Simultaneously Measuring 14C and Radon in Benzene Dating Samples
Theodórsson, Páll
After benzene synthesis, radiocarbon dating samples are usually stored for 34 weeks before counting to allow an eventual radon contamination to decay to a negligible level. This paper presents a technique that can minimize, and often eliminate, this delay by using a simple single-phototube liquid scintillation counting system, specifically designed for 14C dating. Radon contamination is assessed by pulses of 214Po (a 222Rn decay product, half-life 0.16 microseconds), identified through pulse-time analysis. For each 214Po pulse, 0.49 beta particle pulses of 214Pb and 214Bi fall in the 14C counting window, and the 214Po pulses are used to correct the 14C count rate. A 14C sample (count rate 11.6 cpm) was measured continuously for 16 days. It was then doped with radon, which increased the first 24-hr count rate in the 14C channel by 3.8 cpm, and the sample was measured for 27 more days. Radon did not measurably affect the 14C-corrected count rate. Counting a sample for 2 min reveals whether it needs storing. If the radon concentration is low, the sample can be measured immediately without degrading accuracy.
2005-01-01T00:00:00Z