| タイトル | Effects of shock pressures on calcic plagioclase |
| 著者（英） | Gibbons, R. V.; Ahrens, T. J. |
| 著者所属（英） | California Inst. of Tech. |
| 発行日 | 1977-01-01 |
| 言語 | eng |
| 内容記述 | Calcic plagioclase single crystals were subjected to shock loading up to a pressure of 496 kbar; optical and electron microscope studies were conducted to investigate the shock-induced effects on the mineral, which is found in terrestrial and lunar rocks and in meteorites. It was observed that up to 287 kbar pressure, the recovered samples are essentially crystalline, while samples subjected to pressures between 300 and 400 kbar are almost 100% diaplectic glasses, suggesting shock transformation in the solid state. Samples shock-loaded to pressures greater than 400 kbar yielded glasses with refractive indices similar to those of thermally fused glass. It is concluded that planar features, absent in all the specimens, may not be definitive shock indicators, but may be linked to local heterogeneous dynamic stresses experienced by plagioclase grains within shocked rocks. |
| NASA分類 | EARTH RESOURCES AND REMOTE SENSING |
| レポートNO | 77A51358 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/436322 |
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