DOI: 10.1126/science.197.4302.457. Shock-Produced Olivine Glass: First Observation

Shock-Produced Olivine Glass: First Observation

10.1126/science.197.4302.457

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

Transmission electron microscope (TEM) observations of an experimentally shock-deformed single crystal of natural peridot, (Mg 0.88 Fe 0.12 ) 2 SiO 4 , recovered from peak pressures of about 56 × 10 9 pascals revealed the presence of amorphous zones located within crystalline regions with a high density of tangled dislocations. This is the first reported observation of olivine 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 × 10 9 pascals and that further TEM observations of naturally shocked olivines may demonstrate the presence of glass.

Bibliography

Jeanloz, R., Ahrens, T. J., Lally, J. S., Nord, G. L., Christie, J. M., & Heuer, A. H. (1977). Shock-Produced Olivine Glass: First Observation. Science, 197(4302), 457â459.

Authors 6

Raymond Jeanloz (first)
Thomas J. Ahrens (additional)
J. S. Lally (additional)
G. L. Nord (additional)
J. M. Christie (additional)
A. H. Heuer (additional)

References 40 Referenced 84

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Dates

Type	When
Created	18 years, 10 months ago (Oct. 5, 2006, 12:03 p.m.)
Deposited	1 year, 7 months ago (Jan. 11, 2024, 10:06 p.m.)
Indexed	2 weeks, 3 days ago (Aug. 6, 2025, 9:28 a.m.)
Issued	48 years ago (July 29, 1977)
Published	48 years ago (July 29, 1977)
Published Print	48 years ago (July 29, 1977)

Funders 0

None

BibTeX

@article{Jeanloz_1977, title={Shock-Produced Olivine Glass: First Observation}, volume={197}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.197.4302.457}, DOI={10.1126/science.197.4302.457}, number={4302}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Jeanloz, Raymond and Ahrens, Thomas J. and Lally, J. S. and Nord, G. L. and Christie, J. M. and Heuer, A. H.}, year={1977}, month=jul, pages={457–459} }

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  "abstract": "<jats:p>\n            Transmission electron microscope (TEM) observations of an experimentally shock-deformed single crystal of natural peridot, (Mg\n            <jats:sub>0.88</jats:sub>\n            Fe\n            <jats:sub>0.12</jats:sub>\n            )\n            <jats:sub>2</jats:sub>\n            SiO\n            <jats:sub>4</jats:sub>\n            , recovered from peak pressures of about 56 \u00d7 10\n            <jats:sup>9</jats:sup>\n            pascals revealed the presence of amorphous zones located within crystalline regions with a high density of tangled dislocations. This is the first reported observation of olivine 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 \u00d7 10\n            <jats:sup>9</jats:sup>\n            pascals and that further TEM observations of naturally shocked olivines may demonstrate the presence of glass.\n          </jats:p>",
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