著者

山田 哲也 Yamada Tetsuya 塚本 敏夫 Tsukamoto Toshio 小野 直俊 Ono Naotoshi 小田 寛貴 Oda Hirotaka 中村 俊夫 Nakamura Toshio

出版者

名古屋大学年代測定資料研究センター 天然放射性元素測定小委員会

雑誌

名古屋大学加速器質量分析計業績報告書

巻号頁・発行日

vol.10, pp.87-96, 1999-03 (Released:2010-05-25)

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第11回名古屋大学タンデトロン加速器質量分析計シンポジウム(平成10 (1998)年度)報告 名古屋大学タンデトロン加速器質量分析計第1号機の研究実績と1号機,2号磯の利用計画

著者

中川原 育子 谷口 陽子 佐藤 一郎 中村 俊夫 NAKAGAWARA Ikuko TANIGUCHI Yoko SATO Ichiro NAKAMURA Toshio

出版者

名古屋大学年代測定資料研究センター

雑誌

名古屋大学加速器質量分析計業績報告書

巻号頁・発行日

vol.23, pp.127-137, 2012-03 (Released:2013-06-06)

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The Kizil Grottoes, the largest Buddhist monastery complex in the Xinjian region of China, is decorated with wall paintings - the chronological dates of which are still under debate. This study aims to give some clarification regarding the chronological dates using AMS-14C dating of chaff tempers taken from the earthen renders of the wall paintings. l4C studies previously carried out by Chinese and German researchers had resulted in divergent dates often extending back hundreds of years earlier than hypothesized within the chronology of art history, which has created confusion. Six samples from six wall painting fragments (Caves 8 [III8425], 38 [III8700], 171 [III8793, III8891], 207[III9148b(d)], and 224[III8865(a)]) held in collections at the Museum für Asiatische Kunst in Berlin were taken and analysed with 14C-AMS at the Center of Chronological Research at Nagoya University in Japan. As reference, nine dating results analysed between 1995 and 1998 at Nagoya University were also shown in the list. Dates were obtained for only three out of the six samples: cal AD 128-216 [Cave 8], cal AD 255-306 and cal AD 312-34 [Cave 171], and 90-70 cal BC [Cave 224]; most of these extended back earlier than reference 14C data from the Chinese and German studies and far earlier than dates suggested by the timeline of art history. Even the Chinese and German reference dates derived in the past from 14C analysis often show varied dates occurring earlier than those represented in art history. This may indicate that old chaff was used in renders for the Kizil wall paintings probably as a form of re-use of old mud bricks, or that the chronology of art history must be drastically reconsidered, both of which would require further AMS-14C dating studies with careful and comprehensive sampling from well-documented contexts.

著者

南 雅代 Minami Masayo 中村 俊夫 Nakamura Toshio 平田 和明 Hirata Kazuaki 長岡 朋人 Nagaoka Tomohito 鵜澤 和宏 Hoshino Keigo

出版者

名古屋大学年代測定資料研究センター

雑誌

名古屋大学加速器質量分析計業績報告書

巻号頁・発行日

vol.18, pp.134-143, 2007-03 (Released:2010-06-10)

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During the past several decades, many medieval skeletons were excavated from archaeological sites in the Yuigahama area, Kamakura, Japan. The excavations yielded more than 5,000 individuals in varying states of preservation from the Zaimokuza, Seiyokan, Yuigahama-minami and Chusei Shudan Bochi sites. Medieval Kamakura was an ancient capital of the Kamakura Shogunate, and a lot of people lived in Kamakura with high population density. The human skeletons excavated from the Zaimokuza site are reported to be humans dead by competition at the end of the Kamakura Shogunate, but a detailed study on dating of the human skeletons has not made yet. In this study, we measured ^<14>C ages, together with carbon and nitrogen isotope ratios, of human skeletal remains excavated from the Yuigahama-minami site and Chusei Shudan Bochi site. The δ^<13>C and δ^<15>N were not different between human skeletal samples of both sites, while the ^<14>C ages were different between them: The human bones of the Yuigahama-minami site are 100 year younger than those of the medieval collective-cemetery site. All of ages of human skeletons from both of the sites are older than the latest Kamakura period. The δ^<13>C and δ^<15>N values of the medieval Kamakura people are higher than those of terrestrial mammals, indicating that they exploited some amount of marine fish and/or mammals with higher δ^<13>C and δ^<15>N as protein sources. Therefore, the ^<14>C ages obtained for human skeletons could be order than the true ages. ^<87>Sr/^<86>Sr isotopic ratios of human skeletons of the Yuigahama-minami site tend to be higher than those of the Chusei Shudan Bochi site. Soils, plants and animals feeding on them in a given locality have ^<87>Sr/^<86>Sr values that generally mirror underlying bedrock composition, and thus ^<87>Sr/^<86>Sr ratios of human skeletons are useful tools for assessing migration in prehistory. The result obtained in this study suggests that Yuigahama-minami humans and Chusei Shudan Bochi humas lived in different areas. More skeleton samples should be analyzed for determining detailed ^<14>C ages of humans excavated from the Yuigahama sites, and for estimating migration of prehistory of the medieval Kamakura humans.

著者

永治 健太朗 増田 公明 Nakamura Toshio 三宅 芙沙 村木 綏 中村 俊夫 Miyake Fusa Nagaya Kentaro Masuda Kimiaki Muraki Yasushi

出版者

名古屋大学年代測定資料研究センター

雑誌

名古屋大学加速器質量分析計業績報告書

巻号頁・発行日

vol.23, pp.63-68, 2012-03

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名古屋大学年代測定総合研究センターシンポジウム報告