2012 Fiscal Year Final Research Report
Reconstruction of Yayoi-period ritual destruction of bronzesthrough crystal structure analysis
| Project/Area Number |
23650570
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Cultural property science
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| Research Institution | Osaka University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KONDO Katsuyoshi 大阪大学, 接合科学研究所, 教授 (50345138)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 弥生時代 / 青銅器 / 銅鐸片 / 鏡片 / 鉛溶融 / 高温強度 / X線回折 / 結晶粒界 |
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| Research Abstract |
Informed by an interdisciplinary approach between archaeology and metal engineering, this study presents an analysis of bronze bell and mirror fragments unearthed from sites dating to the early-3rd-century (Final Yayoi), temporallysituated on the eve of the Yamato Kingdom’s emergence. The results indicate that bronze bells, having rapidly lost their sanctity, were heated to over 700°C and shattered in order to be reused in the production of other bronzes; in contrast, bronze mirrors (particularly those with designs of interconnected arcs [naik -kamon-ky ]), in aneffort to overcome deficient supply, were shattered and distributed as anauthoritysymbol of the elite confederacy centered on the Setouchi and Kinai regions.
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