| タイトル | Alphonsus-type dark-halo craters - Morphology, morphometry and eruption conditions |
| 著者（英） | Wilson, L.; Head, J. W., III |
| 著者所属（英） | Brown Univ.|Lancaster Univ. |
| 発行日 | 1979-01-01 |
| 言語 | eng |
| 内容記述 | The Alphonsus dark-halo craters are sites of volcanic eruptions with a characteristic crater radius of approximately 1 km. They are characterized by dark haloes ranging from 3 to 4 km, by substantial amounts of nonjuvenile material within the deposits, and by a lack of any associated lava flows or prominent constructional features, such as cones or domes. In the present paper, possible eruption styles are analyzed, using these observational constraints. It is concluded that an eruption process analogous to terrestrial volcanian explosive activity provides the most reasonable explanation for the characteristics of the deposits. The dark-halo craters appear to have formed contemporaneously with the emplacement of lavas in the adjacent Mare Nubium. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 80A23725 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/422865 |
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