Integrated study to refine high-precision dating for the geomorphic and geologic time scales of the Late Quaternary

精细化晚第四纪地貌和地质时间尺度高精度测年的综合研究

• 批准号: 14380031
• 负责人: OKUMURA Koji
• 金额: $ 9.34万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14380031/
• 关键词: Radiocarbon dating; High-precision date; Late Quaternary; Volcanic Eruption; Tephra; Holocene; Paleoearthquake; Calibrated age; 後期更新性

Low-background liquid-scintilation counter for high-precision radiocarbon dating in Hiroshima University began routine measurement. Microsopic observation with digital image records helps to examine radiocarbon samples to evaluate the possibility of contamination by young organic matters. Serial dates from geologic sections were submitted to Bayesian analyses using dendrocorrection programs. With this method, objective and reliable procedures were established to determine the ages of event horizons such as volcanic eruptions and earthquakes. Through all core boring of Aso and Kuju Holocene tephra sections in central Kyushu, standard method for high-precision tephrochronology was established. The core also brought the best stratigraphic sequence of volcaninc activities in central Kyushu and standard chrno-stratigraphic information. For the reconstruction of environmental changes in Late Holocene, complete geologic sections of one to two thousand years were retrieved from three bore holes in northern Kyushu. Radiocarbon dating, micro- and macro-paleontological analyses are underway.

广岛大学用于高精度放射性碳测年的低本底液体闪烁计数器开始常规测量。显微镜观察和数字图像记录有助于检查放射性碳样品，以评估年轻有机物质污染的可能性。来自地质切片的系列数据被提交给使用树状校正程序的贝叶斯分析。利用这种方法，建立了客观和可靠的程序来确定火山喷发和地震等事件层位的年龄。通过对九州中部Aso和Kuju全新世Tephra剖面的全部岩心钻探，建立了高精度Tephra年代学的标准方法。该岩芯还提供了九州中部火山活动的最佳地层序列和标准的chrno地层信息。为了重建晚全新世的环境变化，从九州北部的三个钻孔中提取了一到两千年的完整地质剖面。放射性碳测年、微观和宏观古生物学分析正在进行中。

项目成果

Radiocarbon dating of tephra layers: recent progress in Japan

火山灰层的放射性碳测年：日本的最新进展

• 发表时间: 2003
• 期刊: Quaternary International 105
• 作者: Okuno;M.;Nakamura;T.
• 通讯作者: T.

南九州,姶良岩戸テフラの熱ルミネッセンス年代(予報)

九州南部、姶岩户火山灰热释光年龄（预测）

• 发表时间: 2002
• 期刊: 福岡大学理学集報 32
• 作者: Tomoko Yamada;Noriko Ito;Masaru Matsuo;山下正孝
• 通讯作者: 山下正孝

High precision 14C measurement with the HVEE Tandetron AMS system at Nagoya University.

使用名古屋大学的 HVEE Tandetron AMS 系统进行高精度 14C 测量。

• 发表时间: 2004
• 期刊: Nucl.Instru.and Meth.in Phys.Res. B223-224
• 作者: Toshio Nakamura;Etsuko Niu;他
• 通讯作者: 他

Late Pleistocene crustal uplift and gravity anomaly in the eastern part of Kyushu, Japan, and its geophysical implications

• DOI: 10.1016/s0040-1951(02)00161-0
• 发表时间: 2002-07
• 期刊: Tectonophysics
• 影响因子: 2.9
• 作者: M. Nakada;M. Tahara;H. Shimizu;S. Nagaoka;K. Uehira;Sadaomi Suzuki

Crone, A.J.: "Paleoseismicity of Two Historically Quiescent Faults in Australia : Implications for Fault Behavior in Stable Continental Regions"Seismological Society of America Bulletin. 93. 1913-1934 (2003)

Crone, A.J.：“澳大利亚两个历史上静止断层的古地震活动：对稳定大陆地区断层行为的影响”美国地震学会公报。