Refinement of Radiocarbon Dates for Higher Precision and Accuracy.
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- Okumura Koji
- Seismotectonic Research Section, Geological Survey of Japan
Bibliographic Information
- Other Title
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- ｀１４´Ｃ年代の補正と高精度化のための手法
- ^<14>C年代の補正と高精度化のための手法
- 14C ネンダイ ノ ホセイ ト コウ セイドカ ノ タメ ノ シュホウ
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Abstract
Correction and calibration of radiocarbon dates are indispensable procedures for accurate and precise age estimation. The most significant factors for correction and calibration are reservoir effect, isotopic fractionation, and secular variation in atmospheric 14C concentration. The correction of the reservoir effect is enabled by carbon-cycle modeling or by dating preatomic age marine samples of known age. The effect of isotopic fractionation ranges from 0 to -50 permill δ13C or up to 400 14C years. This effect is easily corrected through δ13C measurement using a mass spectorometer. Accumulated 14C dates of dendrochronologically dated tree ring samples made it possible to calibrate the deviation caused by 14C concentration variation. Now versatile correction and calibration programs for personal computers are available. High precision 14C dating will be meaningful through understanding all calibration and correction methods.
Journal
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- The Quaternary Research (Daiyonki-Kenkyu)
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The Quaternary Research (Daiyonki-Kenkyu) 34 (3), 191-194, 1995
Japan Association for Quaternary Research
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Keywords
Details 詳細情報について
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- CRID
- 1390282681473595776
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- NII Article ID
- 10002632957
- 10003775158
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- NII Book ID
- AN0034136X
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- ISSN
- 18818129
- 04182642
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- NDL BIB ID
- 3624180
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed
