| 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. |
| Genre: | Article |
| ProdID: | 70009984 |
| Citation Author: | Jeanloz, R.; Ahrens, T. J.; Lally, J. S.; Nord, Jr. , G. L.; Christie, J. M.; Heuer, A. H. |
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| Citation End Page: | 459 |
| Citation Issue: | 4302 |
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| Citation Language: | English |
| Citation Larger Work Title: | Science |
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| Citation Number Of Pages: | 3 |
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| Citation Search Results Text: | Shock-produced olivine glass: First observation; 1977; Article; Journal; Science; Jeanloz, R.; Ahrens, T. J.; Lally, J. S.; Nord, Jr. , G. L.; Christie, J. M.; Heuer, A. H. |
| Citation Start Page: | 457 |
| Citation Volume: | 197 |
| Citation Year: | 1977 |
| Type: | citation/reference |
| Text: | Shock-produced olivine glass: First observation; 1977; Article; Journal; Science; Jeanloz, R.; Ahrens, T. J.; Lally, J. S.; Nord, Jr. , G. L.; Christie, J. M.; Heuer, A. H. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sat, 1 Jan 1977 00:00 -0600 |
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