2009年9月
The global distribution of pure anorthosite on the Moon
NATURE
- 巻
- 461
- 号
- 7261
- 開始ページ
- 236
- 終了ページ
- U110
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1038/nature08317
- 出版者・発行元
- NATURE PUBLISHING GROUP
It has been thought that the lunar highland crust was formed by the crystallization and floatation of plagioclase from a global magma ocean(1,2), although the actual generation mechanisms are still debated(2,3). The composition of the lunar highland crust is therefore important for understanding the formation of such a magma ocean and the subsequent evolution of the Moon. The Multiband Imager(4) on the Selenological and Engineering Explorer (SELENE)(5) has a high spatial resolution of optimized spectral coverage, which should allow a clear view of the composition of the lunar crust. Here we report the global distribution of rocks of high plagioclase abundance ( approaching 100 vol.%), using an unambiguous plagioclase absorption band recorded by the SELENE Multiband Imager. If the upper crust indeed consists of nearly 100 vol.% plagioclase, this is significantly higher than previous estimates of 82-92 vol.% (refs 2, 6, 7), providing a valuable constraint on models of lunar magma ocean evolution.
- リンク情報
- ID情報
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- DOI : 10.1038/nature08317
- ISSN : 0028-0836
- eISSN : 1476-4687
- Web of Science ID : WOS:000269654600038