| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Research Abstract |
We are tried to introduce the Cassignol-Gillot (CG) method to K-Ar dating facility in the Yamagata University, in order to date younger volcanic rocks in northeastern Japan. To achieve this, we installed the gas extraction line of the mass spectrometer; adding a variable volume for gas expansion. We confirm the procedures of sample selection and preparation for CG method. We selected suitable rock samples to test effectiveness of the CG method from Nasu-Chausudake Volcano and Iwaki Volcano to applying the CG method. K-Ar dating with CG method will be able to contribute establishing eruptive history in Quaternary volcanoes.
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