DOI: 10.1126/science.259.5095.666. Microstructural Observations of α-Quartz Amorphization

Microstructural Observations of α-Quartz Amorphization

10.1126/science.259.5095.666

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

Solid-state amorphization is a transformation that has been observed in a growing number of materials. Microscopic observations indicate that amorphization of a-quartz begins with formation of crystallographically controlled planar defects and is followed by growth of amorphous silicon dioxide at these defect sites. Similar transformation microstructures are found in quartz upon quasihydrostatic and nonhydrostatic compression in a diamond-anvil cell to 40 gigapascals and from simple comminution. The results suggest that there is a common mechanism for solid-state amorphization of silicates in static and shock high-pressure experiments, meteorite impact, and deformation by tectonic processes. In general, these results are consistent with recently proposed shear instability models of amorphization.

Bibliography

Kingma, K. J., Meade, C., Hemley, R. J., Mao, H., & Veblen, D. R. (1993). Microstructural Observations of Î±-Quartz Amorphization. Science, 259(5095), 666â669.

Authors 5

Kathleen J. Kingma (first)
Charles Meade (additional)
Russell J. Hemley (additional)
Ho-kwang Mao (additional)
David R. Veblen (additional)

References 43 Referenced 207

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Dates

Type	When
Created	6 years, 5 months ago (Feb. 28, 2019, 9:35 p.m.)
Deposited	1 year, 7 months ago (Jan. 12, 2024, 5:27 p.m.)
Indexed	2 weeks, 6 days ago (Aug. 2, 2025, 1:27 a.m.)
Issued	32 years, 6 months ago (Jan. 29, 1993)
Published	32 years, 6 months ago (Jan. 29, 1993)
Published Print	32 years, 6 months ago (Jan. 29, 1993)

Funders 0

None

BibTeX

@article{Kingma_1993, title={Microstructural Observations of α-Quartz Amorphization}, volume={259}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.259.5095.666}, DOI={10.1126/science.259.5095.666}, number={5095}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Kingma, Kathleen J. and Meade, Charles and Hemley, Russell J. and Mao, Ho-kwang and Veblen, David R.}, year={1993}, month=jan, pages={666–669} }

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