Browsing ELibrary by Author "Yamamoto J."

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EVIDENCE FOR SUBDUCTION-RELATED COMPONENTS IN THE SUBCONTINENTAL MANTLE FROM LOW 3HE/4HE AND 40AR/36AR RATIO IN MANTLE XENOLITHS FROM FAR EASTERN RUSSIA

Yamamoto J.; Kaneoka I.; Nakai S.; Kagi H.; Prikhod'ko V.; Arai S. (2004)

By applying both vacuum crushing and stepwise heating methods for the extraction of the noble gases, we have discovered ³He/⁴He ratios much lower than the atmospheric ratio (∼0.3 RA; RA is the atmospheric ³He/⁴He ratio of ...
FOSSIL PRESSURES OF FLUID INCLUSIONS IN MANTLE XENOLITHS EXHIBITING RHEOLOGY OF MANTLE MINERALS: IMPLICATIONS FOR THE GEOBAROMETRY OF MANTLE MINERALS USING MICRO-RAMAN SPECTROSCOPY

Yamamoto J.; Kagi H.; Kaneoka I.; Lai Y.; Prikhod'ko V.S.; Arai S. (2002)

Micro-Raman spectroscopic analysis allows us to estimate the internal pressure of small fluid inclusions. We applied this method to CO2-dominated fluid inclusions in mantle-derived xenoliths. The pressures estimated from ...
LITHIUM ISOTOPIC SYSTEMATICS OF THE MANTLE-DERIVED ULTRAMAFIC XENOLITHS: IMPLICATIONS FOR EM1 ORIGIN

Nishio Y.; Nakai S.; Yamamoto J.; Sumino H.; Matsumoto T.; Prikhod'ko V.S.; Arai S. (2004)

Isotopic signatures of mantle-derived xenoliths have provided much information on the evolution of their mantle source regions. A recently developed multiple-collector inductively coupled plasma mass spectrometry method ...

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