| タイトル | Al-Mg Isotope Study of Allende 5241 |
| 本文（外部サイト） | http://hdl.handle.net/2060/20160002652 |
| 著者（英） | Simon, J. I.; Jeffcoat, C. R.; Lapen, T. J.; Andreasen, R.; Kerekgyarto, A. G.; Ross, D. K.; Righter, M. |
| 著者所属（英） | NASA Johnson Space Center |
| 発行日 | 2016-03-21 |
| 言語 | eng |
| 内容記述 | The defining characteristic of type B1 CAIs is a large (.5- 3mm) concentric melilite mantle [1]. In [2] we presented two isochrons from separate traverses across the melilite mantle of Allende EK 459-5-1. The primary petrographic differences between the traverses was the preservation of strong oscillatory zoning. The traverse that crossed the distinctive oscillatory zone produced a pristine internal isochron, while the other that did not have a strongly preserved oscillatory zone produced a disturbed isochron indicated by more scatter (higher MSWD) and a positive (delta)26Mg* intercept. The implication simply being that the oscillatory zone may represent varying conditions during the mantle formation event. We targeted a similar texture in Allende 5241 using the same methodology in an attempt to achieve similar results. |
| NASA分類 | Geophysics |
| レポートNO | JSC-CN-35195 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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