| タイトル | Mineralogic and petrologic implications of Viking geochemical results from Mars - Interim report |
| 著者（英） | Rose, H. J., Jr.; Keil, K.; Toulmin, P., III; Clark, B. C.; Gooding, J. L.; Christian, R. P.; Baird, A. K. |
| 著者所属（英） | Pomona Coll.|Geological Survey|Martin Marietta Aerospace|New Mexico Univ. |
| 発行日 | 1976-12-17 |
| 言語 | eng |
| 内容記述 | Chemical results from four samples of Martian fines delivered to Viking landers 1 and 2 are remarkably similar in that they all have high iron; moderate magnesium, calcium, and sulfur; low aluminum; and apparently very low alkalies and trace elements. This composition is best interpreted as representing the weathering products of mafic igneous rocks. A mineralogic model, derived from computer mixing studies and laboratory analog preparations, suggests that Mars fines could be an intimate mixture of about 80% iron-rich clay, about 10% magnesium sulfate (kieserite), about 5% carbonate (calcite), and about 5% iron oxides (hematite, magnetite, maghemite, goethite). The mafic nature of the present fines (distributed globally) and their probable source rocks seems to preclude large-scale planetary differentiation of a terrestrial nature. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 77A15908 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/439920 |
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