On the validity of archeomagnetic dating method in Korea: a case study
Tóm tắt
An archeomagnetic study has been performed for six archeological relics of the Proto-Three Kingdoms period excavated in Jungdo Island, South Korea. Among a total of 90 samples from hearths remains of six dwelling sites, the characteristic remanent magnetization components were isolated from 70 samples using the progressive alternating field demagnetizations and considered to record faithfully a thermoremanent magnetization at the timing of the last cooling of the hearths. Two different approaches were made to determine the archeomagnetic ages: One is the conventional method using the relocated paleosecular variation (PSV) curve obtained from southwestern Japan. The other method adopts a Matlab archaeo_dating tool using a Bayesian statistics with global geomagnetic field prediction model (ARCH3K.1). Both archeomagnetic ages using two individual dating methods generally overlapped with the radiocarbon age ranges for each sites. However, no systematic relationship between archeomagnetic ages and radiocarbon ages was observed, implying that neither the relocated Japanese PSV data nor the global model accurately represent the Korean secular variation during the archeological period of this study. At present, archeomagnetic dating in Korea should be carefully applied in conjunction with other dating methods on the consideration of archeological context.
Tài liệu tham khảo
Baag, C., 1996, Archeomagnetic study of white porcelain kiln, Mireogri, Jungweon-gun, Chungbug and Bauer plot from 7 kilns in south Korea. Journal of the Geological Society of Korea, 32, 313–323. (in Korean with English abstract)
Bloxham, J. and Gubbins, D., 1985, The secular variation of Earth’s magnetic field. Nature, 317, 777–781.
De Marco, E., Spatharas, V., Gómez-Paccard, M., Chauvin, A., and Kondopoulou, D., 2008, New archaeointensity results from archaeological sites and variation of the geomagnetic field intensity for the last 7 millennia in Greece. Physics and Chemistry of the Earth, 33, 578–595.
Fisher, R.A., 1953, Dispersion on a sphere. Proceedings of the Royal Society A, 217, 295–305.
Gallet, Y., Genevey, A., and Le Goff, M., 2002, Three millennia of directional variation of the Earth’s magnetic field in western Europe as revealed by archaeological artefacts. Physics of the Earth and Planetary Interiors, 131, 81–89.
Gómez-Paccard, M., Beamud, E., McIntosh, G., and Larrasoaña, J.C., 2013, New archaeomagnetic data recovered from the study of three Roman kilns from north-east Spain: A contribution to the Iberian palaeosecular variation curve. Archaeometry, 55, 159–177.
HICH (Hangang Institute of Cultural Heritage), 2013, Jungdo-dong site, Chuncheon. Research Report 38, Seoul, 465 p.
Hirooka, K., 1971, Archeomagnetic study for the past 2,000 years in southwest Japan. Memoirs of the Faculty of Science, Kyoto University, 38, 167–207.
Hirooka, K., 1977, Recent trend in archeomagnetic and paleomagnetic studies in Quaternary research. The Quaternary Research (Daiyonki- Kenkyu), 15, 200–203. (in Japanese)
Kim, K.H. and Bea, Y.B., 1983, Archeomagnetism of the pottery of Koryo Celadon, the historic site No. 68. Korean Society of Economic and Environmental Geology, 16, 253–256. (in Korean with English abstract)
Kirschvink, J.L., 1980, The least square line and plane and the analysis of palaeomagnetic data. Geophysical Journal of the Royal Astronomical Society, 62, 699–718.
Korte, M. and Constable, C.G., 2003, Continuous global geomagnetic field models for the past 3000 years. Physics of the Earth and Planetary Interiors, 140, 73–89.
Korte, M. and Constable, C.G., 2011, Improving geomagnetic field reconstructions for 0–3 ka. Physics of the Earth and Planetary Interiors, 188, 247–259.
Korte, M., Donadini, F., and Constable, C.G., 2009, Geomagnetic field for 0–3 ka: 2. A new series of time-varying global models. Geochemistry, Geophysics, Geosystems, 10, Q06008.
Kovacheva, M., Boyadziev, Y., Kostadinova-Avramova, M., Jordanova, N., and Donadini, F., 2009, Updated archeomagnetic data set of the past 8 millennia from the Sofia laboratory, Bulgaria. Geochemistry, Geophysics, Geosystems, 10, Q05002.
Lee, Y.S., Doh, S.J., Park, Y.H., Seo, K.S., and Kim, J.Y., 2001, Archaeomagnetic study for some historical kiln sites in the western Korea: the application for the t-KPSV (tentative-Korea Paleosecular variation) curve. Journal of the Geological Society of Korea, 37, 115–132. (in Korean with English abstract)
Park, J.H. and Park, Y.H., 2014, A study of geomagnetic directional change in East Asia during the past 3000 years. Journal of the Geological Society of Korea, 50, 241–256. (in Korean with English abstract)
Pavón-Carrasco, F.J., Osete, M.L., Torta, J.M., and Gaya-Piqué, L,R., 2009, A regional archaeomagnetic model for Europe for the last 3000 years, SCHA.DIF.3K: applications to archaeomagnetic dating. Geochemistry, Geophysics, Geosystems, 10. doi:10.1029/2008GC002244
Pavón-Carrasco, F.J., Osete, M.L., and Torta, J.M., 2010, Regional modeling of the geomagnetic field in Europe from 6000 BC to 1000 BC. Geochemistry Geophysics Geosystems, 11. doi:10.1029/2010GC003197
Pavón-Carrasco, F.J., Rodríguez-González, J., Osete, M.L., and Torta, J.M., 2011, A matlab tool for archaeomagnetic dating. Journal of Archaeological Science, 38, 408–419.
Reimer, P.J., Bard, E., Bayliss, A., Beck, J.W., Blackwell, P.G., Bronk Ramsey, C., Buck, C.E., Cheng, H., Edwards, R.L., Friedrich, M., Grootes, P.M., Guilderson, T.P., Haflidason, H., Hajdas, I., Hatté, C., Heaton, T.J., Hoffmann, D.L., Hogg, A.G., Hughen, K.A., Kaiser, K.F., Kromer, B., Manning, S.W., Niu, M., Reimer, R.W., Richards, D.A., Scott, E.M., Southon, J.R., Staff, R.A., Turney, C.S.M., and van der Plicht, J., 3013, IntCal13 and Marine13 radiocarbon age calibration curves 0–50,000 years cal BP. Radiocarbon, 55, 1869–1887.
Schnepp, E. and Lanos, P., 2005, Archaeomagnetic secular variation in Germany during the past 2500 years. Geophysical Journal International, 163, 479–490.
Schnepp, E. and Lanos, P., 2006, A preliminary secular variation reference curve for archaeomagnetic dating in Austria. Geophysical Journal International, 166, 479–490.
Stuiver, M., Reimer, P.J., and Reimer, R.W., 2017, CALIB 7.1 [WWW program] at http://calib.org.
Tema, E. and Kondopoulou, D., 2011, Secular variation of the Earth’s magnetic field in the Balkan region during the last 8 millennia based on archaeomagnetic data. Geophysical Journal International, 186, 603–614.
Tema, E., Hedley, I., and Lanos, P., 2006, Archaeomagnetism in Italy: a compilation of data including new results and a preliminary Italian secular variation curve. Geophysical Journal International, 167, 1160–1171.
Yu, Y.J., Doh, S.J., Kim, W., Park, Y.H., Lee, H.J., Yim, Y.J., Cho, S.G., Oh, Y.S., Lee, D.S., Lee, H.H., Gong, M.G., Hyun, D.H., Cho, J.K., Sin, Y.S., and Do, M.S., 2010, Archeomagnetic secular variation from Korea: Implication for the occurrence of global archeomagnetic jerks. Earth and Planetary Science Letters, 294, 173–181.
Zananiri, I., Batt, C.M., Lanos, P., Tarling, D. H., and Linford, P., 2007, Archaeomagnetic secular variation in the UK during the past 4000 years and its application to archaeomagnetic dating. Physics of the Earth and Planetary Interiors, 160, 97–107.
Zijderveld, J.D.A., 1967, AC demagnetisation of rocks: analysis of results. In: Collinson, D.W., Creer, K.M., and Runcorn, S.K. (eds.), Method in Palaeomagnetism. Elservier, Amsterdam, p. 254–286.