Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2009: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2008: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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Research Abstract |
The technique of the noble gas and halogen multi-element simultaneous analysis, in which some halogen isotopes are converted to specific noble gas isotopes by nuclear reaction induced by neutron irradiation in a nuclear reactor, was established. Geochemical evidences for upwelling of deep mantle material and subduction of surface-derived water into mantle to depths of mantle between 100 and 200 km were found by applying this method to deep-mantle-derived samples such as the mantle peridotites and diamonds.
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