| タイトル | Experimental study of pyroxene-liquid interaction in quartz-normative basalt 15597 |
| 著者（英） | Bence, A. E.; Grove, T. L. |
| 著者所属（英） | State Univ. of New York |
| 発行日 | 1977-01-01 |
| 言語 | eng |
| 内容記述 | Equilibrium and controlled cooling rate experiments on a synthetic analog of Apollo 15 quartz normative basalt 15597 are reported. While the partitioning of the major elements Ca, Mg, and Fe between pyroxene and liquid is rate independent, the K sub D parameter for Fe/Mg, which is calculated for low-Ca pyroxene, is temperature dependent. It is suggested that chemical trends observed in lunar pyroxenes are a consequence of three rate processes. The processes are (1) rate-dependent suppression of crystallization of other phases until lower temperature alters liquid composition and, therefore, the composition of the pyroxene that crystallizes; (2) the efficiency of fractional crystallization and the extent of crystal zoning are rate dependent; and (3) the partitioning of Al2O3, TiO2, and Cr2O3 between pyroxene and liquid depends on cooling rate. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 78A41650 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/432188 |
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