Radiocarbon Age Assessment of a New, Near Background Iaea 14C Quality Assurance Material
The 14C Quality Assurance Programme coordinated by the IAEA (Rozanski et al. 1992) prepared a set of five new intercomparison materials, including 40–50 ka old subfossil wood excavated from New Zealand peat bogs (IAEA C-4 standard). Statistical analysis of 79 14C measurements made on the wood indica...
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| Veröffentlicht in: | Radiocarbon 1995, Vol.37 (2), p.797-803 |
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| container_title | Radiocarbon |
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| creator | Hogg, A. G. Higham, Thomas Robertson, Steve Beukens, Roelf Kankainen, Tuovi McCormac, F.G. Van Der Plicht, Johannes Stuiver, Minze |
| description | The 14C Quality Assurance Programme coordinated by the IAEA (Rozanski et al. 1992) prepared a set of five new intercomparison materials, including 40–50 ka old subfossil wood excavated from New Zealand peat bogs (IAEA C-4 standard). Statistical analysis of 79 14C measurements made on the wood indicated considerable variation in the results, with a marked skewness toward more modern values. The wide range of results and the possibility of inhomogeneity within the standard prompted the recovery and analysis of replacement material. The new subfossil wood sample is kauri (Agathis australis), at least 50 ka old, excavated from a swamp in Northland. It is in the form of a single plank, 6 m long, weighing 80 kg. It will be forwarded to the IAEA in Vienna for milling and distribution. Subsamples were obtained from both ends of the plank and analyzed by six laboratories. We present here the results of these analyses and compare them with the previous IAEA intercalibration results for the C-4 standard. |
| doi_str_mv | 10.1017/S0033822200031362 |
| format | Article |
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G. ; Higham, Thomas ; Robertson, Steve ; Beukens, Roelf ; Kankainen, Tuovi ; McCormac, F.G. ; Van Der Plicht, Johannes ; Stuiver, Minze</creator><creatorcontrib>Hogg, A. G. ; Higham, Thomas ; Robertson, Steve ; Beukens, Roelf ; Kankainen, Tuovi ; McCormac, F.G. ; Van Der Plicht, Johannes ; Stuiver, Minze</creatorcontrib><description>The 14C Quality Assurance Programme coordinated by the IAEA (Rozanski et al. 1992) prepared a set of five new intercomparison materials, including 40–50 ka old subfossil wood excavated from New Zealand peat bogs (IAEA C-4 standard). Statistical analysis of 79 14C measurements made on the wood indicated considerable variation in the results, with a marked skewness toward more modern values. The wide range of results and the possibility of inhomogeneity within the standard prompted the recovery and analysis of replacement material. The new subfossil wood sample is kauri (Agathis australis), at least 50 ka old, excavated from a swamp in Northland. It is in the form of a single plank, 6 m long, weighing 80 kg. It will be forwarded to the IAEA in Vienna for milling and distribution. Subsamples were obtained from both ends of the plank and analyzed by six laboratories. We present here the results of these analyses and compare them with the previous IAEA intercalibration results for the C-4 standard.</description><identifier>ISSN: 0033-8222</identifier><identifier>EISSN: 1945-5755</identifier><identifier>DOI: 10.1017/S0033822200031362</identifier><language>eng</language><publisher>New York, US: Cambridge University Press</publisher><subject>D. Analytical Quality Control Services ; Dating ; Excavation and methods ; Laboratory methods ; Methodology and general studies ; Prehistory and protohistory ; V. Advances in Measurement Techniques</subject><ispartof>Radiocarbon, 1995, Vol.37 (2), p.797-803</ispartof><rights>Copyright © the Department of Geosciences, The University of Arizona</rights><rights>1996 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.cambridge.org/core/product/identifier/S0033822200031362/type/journal_article$$EHTML$$P50$$Gcambridge$$H</linktohtml><link.rule.ids>164,309,310,314,780,784,789,790,4023,4049,4050,23929,23930,25139,27922,27923,27924,55627</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=3285445$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Hogg, A. 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The wide range of results and the possibility of inhomogeneity within the standard prompted the recovery and analysis of replacement material. The new subfossil wood sample is kauri (Agathis australis), at least 50 ka old, excavated from a swamp in Northland. It is in the form of a single plank, 6 m long, weighing 80 kg. It will be forwarded to the IAEA in Vienna for milling and distribution. Subsamples were obtained from both ends of the plank and analyzed by six laboratories. We present here the results of these analyses and compare them with the previous IAEA intercalibration results for the C-4 standard.</description><subject>D. Analytical Quality Control Services</subject><subject>Dating</subject><subject>Excavation and methods</subject><subject>Laboratory methods</subject><subject>Methodology and general studies</subject><subject>Prehistory and protohistory</subject><subject>V. 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Analytical Quality Control Services</topic><topic>Dating</topic><topic>Excavation and methods</topic><topic>Laboratory methods</topic><topic>Methodology and general studies</topic><topic>Prehistory and protohistory</topic><topic>V. Advances in Measurement Techniques</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hogg, A. G.</creatorcontrib><creatorcontrib>Higham, Thomas</creatorcontrib><creatorcontrib>Robertson, Steve</creatorcontrib><creatorcontrib>Beukens, Roelf</creatorcontrib><creatorcontrib>Kankainen, Tuovi</creatorcontrib><creatorcontrib>McCormac, F.G.</creatorcontrib><creatorcontrib>Van Der Plicht, Johannes</creatorcontrib><creatorcontrib>Stuiver, Minze</creatorcontrib><collection>Pascal-Francis</collection><jtitle>Radiocarbon</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hogg, A. 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| language | eng |
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| source | EZB-FREE-00999 freely available EZB journals; Free Full-Text Journals in Chemistry; Cambridge University Press Journals Complete |
| subjects | D. Analytical Quality Control Services Dating Excavation and methods Laboratory methods Methodology and general studies Prehistory and protohistory V. Advances in Measurement Techniques |
| title | Radiocarbon Age Assessment of a New, Near Background Iaea 14C Quality Assurance Material |
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