| タイトル | An "Andesitic" Component in Shergottites with Restored LREE Abundances? |
| 著者（英） | Shih, C.-Y.; Nyquist, L. E.; Barrat, J. A.; Wiesmann, H. |
| 著者所属（英） | NASA Johnson Space Center |
| 発行日 | 2002-01-01
2002 |
| 言語 | eng |
| 内容記述 | The shergottite Martian meteorites present a variety of oft-confusing petrologic features. In particular, represented among this subgroup are basalts with very depleted LREE abundances, as well as those with nearly chondritic overall REE abundances. The LREE-depleted basalts appear to more closely record the REE and isotopic features of their mantle source legions. Those basalts with more nearly chondritic REE abundances appear to contain an extra component often referred to as a "crustal" component. The addition of the crustal component tends to restore the overall REE abundance pattern towards chondritic relative abundances. Here we suggest that the crustal component could derive from andesitic rocks observed remotely to occur on the Martian surface, and which were analysed at the Pathfinder site. |
| NASA分類 | Lunar and Planetary Science and Exploration |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/544881 |
