| Project/Area Number |
18520586
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Archaeology
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| Research Institution | Kyushu University |
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Principal Investigator |
MIZOGUCHI Koji Kyushu University, Graduate School of Social and Cultural Studies, Associate Professor (80264109)
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| Project Period (FY) |
2006 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥4,010,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥510,000)
Fiscal Year 2007: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2006: ¥1,800,000 (Direct Cost: ¥1,800,000)
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| Keywords | archaeological dating / scientific dating / AMS dating / Yayoi period / Japan |
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| Research Abstract |
The objectives of this research were as follows:
a) to examine the nature ofpossible dating material-caused discrepancies in the outcomes of the AMS dating of different types of dating materials, particularly soot adhering to the surface of pots, charred seeds and human bones;
and
b) to compare the outcomes of the AMS dating of different types of dating materials with some absolute dates of the Middle and Late Yayoi periods determined by the TPQ (i. e., Terminus Post Quem) of imported absolute-datable artifacts (e. g. Han Bronze mirrors) from Mainland Asia and the Korean peninsula
The notable outcomes are as follows:
1) From a rigorous cross-checking of contemporaneity between individual chronological stages by examining same types of pots excavated from the both regions, the relative chronological stages of the northern Kyushu and Setouchi-Kansai regions are roughly contemporaneous stage by stage, except the transitional stages from the Middle to the Late Yayoi where the first stage of the Late Yayoi period of the Setouchi-Kansai region began sometime during the later half of the first half of the Late Yayoi of the northern Kyushu region.
2) The TPQ of the artifacts excavated from burial jars dated to the second half of the first half of the Late Yayoi of the northern Kyushu region has been determined to date from AD 50~AD 75, and this poses a serious question to the validity of the widely accepted date for the beginning of the Late Yayoi of the Setouchi-Kansai region to be around 1 AD.
3) The outcomes of the AMS dating of charred seeds show considerably earlier dates than what are determined from the TPQ of the imported artifacts from Mainland Asia. The date of the second half of the first half of the Late Yayoi of the northern Kyushu region, as mentioned, dates from AD 50~AD 75, whereas the dates obtained from the charred seeds are around 1AD. This makes further researches into possible discrepancies caused by different dating materials of absolute necessity.
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