Answers are grounded in this paper and cite their sources.
Some archaeological materials from prehistoric Japan have been subjected to the radiocarbon assays at several laboratories in the United States. According to the publication date, the results obtained so far are presented with some references to the related information. Laboratories and sample numbers are as follows:C-548, C-603, C-688, M-240, W-322, W-372, W-419, M-165 M-174, M-237, M-239, M-768, M-769, M-770, I-550, I-551, I-552, I-553, I-554, I-555.C: University of Chicago, M: University of Michigan, W: U.S. Geological Survey, I: Isotopes, Inc.
No takes yet. Share an insight, caveat, or question.
Naotune WATANABE (1963) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: