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AMS 14C Dating of Iron Artifacts: Development and Application

  • Hiroki Enami (a1), Toshio Nakamura (a1), Hirotaka Oda (a1), Tetsuya Yamada (a2) and Toshio Tsukamoto (a2)...

Abstract

We have developed a prototype carbon extraction system for accelerator mass spectrometry (AMS) radiocarbon dating of archaeological iron remains by combusting them with a RF induction furnace. We have also successfully tested and used a method of carbon extraction from iron using a CuCl2 solution. Modifications to our carbon extraction systems and methods provide us acceptable performances; carbon yield is normally around 80% and the 14C background level is as low as 42–48 ka BP in 14C apparent age. We have also conducted an iron refining experiment to examine the sources for carbon 14C age derived from iron, using established AMS 14C dating and carbon extraction systems. Our refining experiment was conducted on iron slag, which are by-products formed during iron smelting methods in the 7th century AD, and using modern charcoal as fuel. The aim of the experiment was to determine whether original carbon characteristics in the original iron materials would be preserved, or if the carbon signature would be replaced to some degree by the modern charcoal. AMS 14C measurements on the refined iron yielded 14C ages equivalent to those of the modern charcoal fuel. The result indicates that the original carbon signatures in the iron slag from 7th century production was replaced completely by modern carbon used in our experiment. The experiment confirms the assumption that 14C ages on iron products are associated with the fuel source of the iron smelting or refining process. We also report on the dating of iron slag materials excavated from the Gennaitouge iron smelting site, where 14C dates were consistent with the age of the site estimated by archaeological evidence.

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Copyright

Corresponding author

Corresponding author. Email: nakamura@nendai.nagoya-u.ac.jp.

References

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Cheoun, MK, Kim, JC, Kang, J, Kim, IC, Park, JH, Song, YM. 2001. Pretreatment of iron artifacts at SNU-AMS. Radiocarbon 43(2A):217–9.
Cook, AC, Wadsworth, J, Southon, JR. 2001. AMS radiocarbon dating of ancient iron artifacts: a new carbon extraction method in use at LLNL. Radiocarbon 43(2A):221–7.
Cook, AC, Wadsworth, J, Southon, JR, van der Merwe, NJ. 2003a. AMS radiocarbon dating of rusty iron. Journal of Archaeological Science 30(1):95102.
Cook, AC, Southon, JR, Wadsworth, J. 2003b. Using radiocarbon dating to establish the age of iron-based artifacts. Journal of Metallurgy 55(5):1522.
Craddock, PT, Wayman, ML, Jull, AT. 2002. The radiocarbon dating and authentication of iron artifacts Radiocarbon 44(3):717–32.
Cresswell, RG. 1991. The radiocarbon dating of iron artifacts using accelerator mass spectrometry. Historical Metallurgy 25:7585.
Cresswell, RG. 1992. Radiocarbon dating of iron artifacts. Radiocarbon 34(3):898905.
Hüls, CM, Grootes, PM, Nadeau, MJ, Bruhn, F, Hasselberg, P, Erlenkeuser, H. Forthcoming. AMS radiocarbon-dating of iron artefacts. Nuclear Instruments and Methods in Physics Research B.
Igaki, K, Nakamura, T, Hirasawa, M, Kato, M, Sano, M. 1994. Radiocarbon dating study of ancient iron artifacts with accelerator mass spectrometry. Proceedings of the Japan Academy 70(B):49.
Kitagawa, H, Masuzawa, T, Nakamura, T, Matsumoto, E. 1993. A batch preparation method for graphite targets with low background for AMS 14C measurement. Radiocarbon 35(2):295300.
Nakamura, T, Hirasawa, M, Igaki, K. 1995. AMS Radiocarbon dating of ancient oriental iron artifacts at Nagoya University. Radiocarbon 37(2):629–36.
Nakamura, T, Niu, E, Oda, H, Ikeda, A, Minami, M, Takahashi, AH, Adachi, M, Pals, L, Gottdang, G, Suya, N. 2000. The HVEE Tandetron AMS system at Nagoya University. Nuclear Instruments and Methods in Physics Research B 172:52–7.
Oda, H, Nakamura, T, Furukawa, M. 1999 A wet method of carbon extraction from iron artifacts for 14C age measurement with AMS. Journal of Radioanalytical and Nuclear Chemistry 239(3):561–4.
Ono, N, Sano, M, Kuwabara, M, Nakamura, T, Oda, H, Hirasawa, M. 1999. Metallurgical and chronological studies on processing of ancient iron artifacts. Summaries of Researches Using AMS at Nagoya University X:7786. In Japanese with English abstract.
Shiga Preservation of Cultural Assets Association. 2001. Gennaitouge Site. 389 p. In Japanese.
Shimoyama, S, Watanabe, K, Nishida, T, Harada, D, Tsuruta, K, Komatsu, J. 1994. Burnt big trees by the Aso-4 pyroclastic flow. The Quaternary Research 33(2): 107–12. In Japanese with English abstract.
Stuiver, M, Reimer, PJ, Bard, E, Beck, JW, Burr, GS, Hughen, KA, Kromer, B, McCormac, G, van der Plicht, J, Spurk, M. 1998. INTCAL98 radiocarbon age calibration, 24,000–0 cal BP. Radiocarbon 40(3):1041–83.
Yamada, T, Tsukamoto, T, Ono, N, Oda, H, Nakamura, T. 1999. Verifications of 14C age measuring theories of iron products by an iron-manufacturing experiment and views through the experiment. Summaries of Researches Using AMS at Nagoya University X:8796. In Japanese with English abstract.
Yamada, T, Tsukamoto, T, Oda, H, Nakamura, T. 2001. Radiocarbon dating of iron manufacture remains. Summaries of Researches Using AMS at Nagoya University XII:103–12. In Japanese with English abstract.
Yamada, T. 2001. Report of Grant-in-Aid for Scientific Research [Grant-in-Aid for Scientific Research(C)]: 60–3. In Japanese.
Yokoi, T, Nakamura, T. 1998. AMS 14C dating of iron artifacts and other samples related with ancient iron production in Aichi Prefecture. Summaries of Researches Using AMS at Nagoya University IX:1826. In Japanese with English abstract.
Van der Merwe, NJ, Stuiver, M. 1968. Dating iron by the carbon-14 method. Current Anthropology 9:4853.
Yoshida, K. 1992. Measurement of 14C age by accelerator mass spectrometry. Bulletin of the National Museum of Japanese History 38:171–98. In Japanese with English abstract.

AMS 14C Dating of Iron Artifacts: Development and Application

  • Hiroki Enami (a1), Toshio Nakamura (a1), Hirotaka Oda (a1), Tetsuya Yamada (a2) and Toshio Tsukamoto (a2)...

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