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Electron probe microanalysis (EPMA), including the CHIME dating, is performed using two electron probe microanalyzer (JCXA-733, JEOL, Tokyo), at the Center for Chronological Research, Nagoya University. The one equips four wavelength dispersive spectrometers (WDS) and optimized to the CHIME dating of rock-forming minerals. The other equips five WDSs with a variety of analyzing crystals, including customized crystals for many kind of analysis of ultra-light elements through heavy elements., 名古屋大学年代測定総合研究センターでは、2台の電子プローブマイクロアナライザー(EPMA)を用いて、CHIME年代測定や関連する分析についての教育・研究を実施している。2014年度は、高感度微量元素測定と高精度エックス線干渉補正の検討を実施した。その結果、約1OMa程度のモナザイトのCHIME年代測定が可能であることが示された。また、EPMAの保守体制を整備し、当面は現有装置を維持可能な状態にした。, 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

CHIME dating and related electron probe microanalysis (EPMA) are performed using two electron probe microanalyzers (JCXA-733, IEOL, Tokyo) at the Center for Chronological Research, Nagoya University. The one equips four wavelength dispersive spectrometers (WDS) and mainly used for the CHIME dating of U and Th-bearing rock-forming minerals. The other equips five WDSs with a variety of analyzing crystals, and used for many kind of analysis including general quantitative EPMA and the CHIME dating. Physical parameters in quantitative EPMA were validated and new dataset of mass attenuation coefficients was developed to improve accuracy of quantitative EPMA., 名古屋大学年代測定総合研究センター新年代測定法開発研究分野では、2台の電子プロープマイクロアナライザーを用いてCHIME年代測定及び関連するX線分光分析に関する教育・研究を行っている。平成25年度には、定量分析の補正計算で用いられる定数の検討を行い、新しい質量吸収係数のデーターセットを作成した。これにより、CHIME年代測定を含めたEPMA定量分析の確からしさが向上する。, 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

A set of Sanbagawa metapelite samples collected mainly by Dr. T. Higashino, and their locality map and thin sections was donated to Nagoya University. The Higashino Collection is stored at the Nagoya University Museum, and will be resourced for various earth scientific researches. The petrological significance and importance of the Higashino Collection are described., 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

From July 31, 2013 through August 1, we held a workshop of the dendrochronology for primary and secondary students in Center for Chronological Research, Nagoya University. Ten children and two protectors participated in this workshop. They experienced fundamental experiment of the dendrochronology. In addition, they attended various lectures about the tree ring. They were able to decide the date of the experiment samples. They appreciated these experiments and lectures., 2013年7月31日-8月1日に，名古屋大学年代測定総合研究センターは，小中学生のための「年輪年代法体験学習」を開催した.この体験学習には10名の小中学生と2名の保護者が参加した.参加者は，年輪年代法の基礎実験を体験し，あわせて樹木年輪に関する様々な講義を受講した.全ての参加者が，実験試料の年代決定を成功させた.参加者はこの体験学習の内容を高く評価した., 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

CHIME dating and related electron microprobe analyses are performed with two electron microprobe analyzers (JCXA-733, JEOL, Tokyo) at the Center for Chronological Research, Nagoya University. The one equips four wavelength dispersive spectrometers and mainly used for CHIME dating. Another equips five wavelength dispersive spectrometers and used for many kind of analysis including CHIME dating. A problem of mass attenuation coefficients is found in the data set provided by Henke et al. (1993) and the matrix correction procedure is under reevaluation., 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

Meaning of chronological data for petrological studies was reviewed. Mizutani and Shibata (1983) estimated duration of lithification after initial deposition of sediment as 17 million years using a combination of radiolarian fossil and 87Rb-87Sr whole rock isochron ages. Harayama (1992) reported a youngest exposed granitoid pluton on Earth from the Northern Alps, central Japan, based on the K-Ar hornblende and biotite ages， Rb-Sr biotite age，and fission track zircon age. Metamorphic rocks generally record ages of many equilibrium stages during metamorphic evolution. Katayama (2004) confirmed five stages of zircon growth in ultra-high pressure metamorphic rocks from the Kokchetav massif，and estimated their exhumation speed as 0.5-0.6 cm/year using Secondary Ion Mass Spectrometry., 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