Browsing by Author "Takaoka N."
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Browsing by Author "Takaoka N."
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Nakamura T.; Noguchi T.; Yada T.; Nakamuta Y.; Takaoka N. (2001)Bulk mineralogy of individual fine-grained micrometeorites from 50 to 200 μm in diameter was determined on the basis of the powder X-ray diffraction patterns and the observation of internal textures by a transmission ...
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Kitajima F.; Nakamura T.; Takaoka N.; Murae T. (2002)The degrees of thermal metamorphism of 10 CM chondrites and of the Allende CV3 chondrite were evaluated from the viewpoint of ''graphitization'' of the carbonaceous macromolecular matter by means of flash pyrolysis-gas ...
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Nakamura T.; Nagao K.; Metzler K.; Takaoka N. (1999)Distribution of solar, cosmogenic, and primordial noble gases in thin slices of Murchison, Murray, and Nogoya CM carbonaceous chondrites was determined by the laser microprobe analysis so as to put some constraints on the ...
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Nakamura T.; Nagao K.; Takaoka N. (1999)In situ noble gas analyses using a laser microprobe with a beam diameter of 50-100 μm were performed on thin slices of Murchison and Yamato (Y-) 791198 CM carbonaceous chondrites in order to see microdistribution of ...
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Okazaki R.; Nakamura T.; Takaoka N.; Nagao K. (2003)Noble gases in two ureilites, Kenna and Allan Hills (ALH) 78019, were measured with two extraction methods: mechanical crushing in a vacuum and heating. Large amounts of noble gases were released by crushing, up to 26.5% ...
Now showing items 1-5 of 5