A Classification for Some Small Chondrites in the Yamato-74 and -75 Meteorites
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概要
- 論文の詳細を見る
Electron microprobe studies have been made of olivines and pyroxenes in six Yamato chondrites collected in 1974 and 1975. On the basis of histograms of iron contents of olivines and pyroxenes, they are classified as follows : Yamato-(Y-) 75260 is a C2 carbonaceous chondrite; Y-74183 is an L6 ordinary chondrite; Y-74187,H6; Y-74198,H6; Y-74202,H5-6; and Y-74234,H4-5. In order to examine in detail the Mg-Fe chemical variation within the olivine or pyroxene grain found in some shocked ordinary chondrites, the Back-scattered Electron Image (BEI) observation has been carried out for several olivine grains in Yamato-74234. A larger percent mean deviation of olivine for these meteorites than what is expected from their texture, can be attributed to the presence of Fe-rich inclusions in the olivines.
- 国立極地研究所の論文
著者
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MATSUMOTO Yukio
Department of Preventive Medicine and Public Health, School of Medicine, Keio University
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Miyamoto Masamichi
Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo
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TAKEDA Hiroshi
Research Institute, Chiba Institute of Technology
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Takeda Hiroshi
Mineralogical Institute, University of Tokyo
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Yanai Keizo
National Institute of Polar Research
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Takeda Hiroshi
Department Of Earth And Planetary Science The University Of Tokyo
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Matsumoto Yukio
Department Of Geology Faculty Of Liberal Arts Nagasaki University
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Miyamoto Masamichi
Department Of Earth And Planetary Science The University Of Tokyo
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Miyamoto Masamichi
Space And Planetary Science Graduate School Of Science University Of Tokyo
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Miyamoto Masamichi
Department Of Earth And Planetary Science Graduate School Of Science University Of Tokyo
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Matsumoto Yukio
Department Of Anesthesiology Fukushima Medical University School Of Medicine
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Takeda Hiroshi
Mineralogical Institute Faculty Of Science University Of Tokyo
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