Shock-produced olivine glass: First observation
Science
By: Raymond Jeanloz, T.J. Ahrens, J.S. Lally, G.L. Nord Jr., J.M. Christie, and A.H. Heuer
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Abstract
Transmission electron microscope (TEM) observations of an experimentally shock-deformed single crystal of natural peridot, (Mg0.88Fe 0.12SiO4 recovered from peak pressures of about 56 ?? 109 pascals revealed the presence of amorphous zones located within crystalline regions with a high density of tangled dislocations. This is the first reported observation ofolivine glass. The shocked sample exhibits a wide variation in the degree of shock deformation on a small scale, and the glass appears to be intimately associated with the highest density of dislocations. This study suggests that olivine glass may be formed as a result of shock at pressures above about 50 to 55 ?? 109 pascals and that further TEM observations of naturally shocked olivines may demonstrate the presence of glass.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Shock-produced olivine glass: First observation |
| Series title | Science |
| Volume | 197 |
| Issue | 4302 |
| Year Published | 1977 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Science |
| First page | 457 |
| Last page | 459 |
| Google Analytic Metrics | Metrics page |