| タイトル | Surface exposure indices of lunar soils - A comparative FMR study |
| 著者（英） | Morris, R. V. |
| 著者所属（英） | NASA Johnson Space Center |
| 発行日 | 1976-01-01 |
| 言語 | eng |
| 内容記述 | The intensity of the characteristic FMR resonance of a lunar soil normalized to its total iron content (Is/FeO) was tested for use as its index of relative surface exposure age. The characteristic resonance is due to fine-grained metal that is the result of micrometeorite impact at the lunar surface. In this study, Is/FeO was measured for the below 250 micron size fraction of 152 soils and for the 90-150 micron size fraction of 88 soils. With this large suite of samples it was possible to correlate Is/FeO with a variety of other indices of relative surface exposure age (N, C, trapped He-4, trapped Ar-36, petrographic and magnetic agglutinates, and mean grain size) and thus not only affirm that Is/FeO is an index of relative surface exposure age but also consider the relative merits of the various surface exposure indices. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 77A34670 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/437931 |
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