When high pressure (250 to 300 kilobars) was applied suddenly (shock-loading) to gabbro, the plagioclase was transformed to a noncrystalline phase (maskelynite) by a solid-state reaction at a low temperature, while the proxene remained crystalline. The shock-loaded gabbro resembles meteorites of the shergottite class; this suggests that the latter formed as a result of shock. The shock-loading of gabbro at 600 to 800 kilobars raised the temperature above the melting range of the plagioclase.
Maskelynite: Formation by explosive shock
Science
By: Daniel J. Milton and P. S. De Carli
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Abstract
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Maskelynite: Formation by explosive shock |
| Series title | Science |
| DOI | 10.1126/science.140.3567.670 |
| Volume | 140 |
| Issue | 3567 |
| Year Published | 1963 |
| Language | English |
| Publisher | AAAS |
| Description | 2 p. |
| First page | 670 |
| Last page | 671 |