Trace Element Analyses of Howardites and Polymict Eucrites using NAA Methods
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概要
- 論文の詳細を見る
Both PGA and INAA methods are complimentary and they are very useful in getting essential information for howardites and polymict eucrites. Many of these data are firstly reported for these meteorites, which serve as reference data for future study. Among the howardites, Kapoeta, LEW 85313, MET 96500 and QUE 97002 contain higher siderophile elements possibly due to presence of chondritic materials. Polyrnict eucrites show lower siderophile contents (less than 0.01 × CI values) than those of howardites. It was found that polymict eucrites and howardites from the Yamato collection show high abundances of Au indicating possible contamination during curation. The howardites and polymict eucrites analyzed in this study show variable abundances of siderophile elements suggesting that impactors of variable chemical compositions may have collided with the HED parent body. Further study using platinum group elements are in progress, which will enable us to discuss in detail the impactors of HED parent body.
- 放射化分析研究会の論文
著者
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Oura Y.
Graduate School Of Science And Engineering Tokyo Metropolitan University
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Wee B.
Graduate School of Science and Engineering, Tokyo Metropolitan University
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Ebihara M.
Graduate School of Science and Engineering, Tokyo Metropolitan University
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Wee B.
Graduate School Of Science And Engineering Tokyo Metropolitan University:(present Office)malaysian N
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Ebihara M.
Graduate School Of Science And Engineering Tokyo Metropolitan University
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