Sample processing and initial analysis techniques for Antarctic micrometeorites
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概要
- 論文の詳細を見る
Based on our initial visual selection (IVS) criteria and low vacuum (LV)-SEM/EDS data, we successfully selected candidates of unmelted chondritic Antarctic micrometeorites (AMMs) from the unsorted sample set collected by Maurette's group in 1991. AEM data of some of the selected microparticles show that they are unmelted but probably dehydrated AMMs. An AMM candidate, 91-1-C4,contains ferroan (around Fo30) olivine grains which have planar channels parallel to (001). Their textures quite resemble those shown in the initial stage of iddingsite formation of olivine phenocrysts in terrestrial basalts. These findings indicate that some olivine crystals in AMMs can be altered even in the Antarctic environment.
- 国立極地研究所の論文
著者
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Yano Hajime
Planetary Science Division The Institute Of Space And Astronautical Science (isas)
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Yano Hajime
Planetary Science Division Institute Of Space And Astronautical Science
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Noguchi Takaaki
Department Of Materials And Biological Sciences Ibaraki University
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Noguchi Takaaki
Department Of Earth Sciences Ibaraki University
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Noguchi Takaaki
Department of Earth Science, Faculty of Science, Ibaraki University
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