Shock-produced olivine glass: First observation
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.
Citation Information
Publication Year | 1977 |
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Title | Shock-produced olivine glass: First observation |
Authors | Raymond Jeanloz, T.J. Ahrens, J.S. Lally, G.L. Nord, J.M. Christie, A.H. Heuer |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Science |
Index ID | 70009984 |
Record Source | USGS Publications Warehouse |