| タイトル | Chemistry of Diogenites and Evolution of their Parent Asteroid |
| 本文（外部サイト） | http://hdl.handle.net/2060/20090001316 |
| 著者（英） | Mittlefehldt, D.W.; Beck, A.W.; McSween, H.Y.; Lee, C-T A. |
| 著者所属（英） | NASA Johnson Space Center |
| 発行日 | 2009-01-01 |
| 言語 | eng |
| 内容記述 | Diogenites are orthopyroxenite meteorites [1]. Most are breccias, but remnant textures indicate they were originally coarse-grained rocks, with grain sizes of order of cm. Their petrography, and major and trace element chemistry support an origin as crustal cumulates from a differentiated asteroid. Diogenites are genetically related to the basaltic and cumulate-gabbro eucrites, and the polymict breccias known as howardites, collectively, the HED suite. Spectroscopic observations, orbit data and dynamical arguments strongly support the hypothesis that asteroid 4 Vesta is the parent object for HED meteorites [2]. Here we discuss our new trace element data for a suite of diogenites and integrate these into the body of literature data. We use the combined data set to discuss the petrologic evolution of diogenites and 4 Vesta. |
| NASA分類 | Geophysics |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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