Deformation of experimentally shocked biotite
- Creators
- Horz, Friedrich
- Ahrens, Thomas J.
Abstract
Shock experiments (10-40 kb) on lepidomelane show that kinking occurs at pressures as low as 9 kb; the intensity is related to peak pressure and shock pulse duration (0.7-0.3µ sec.), and is produced by shocks propagated along [hk0] and not along [001]. The shock-induced kinks have a wider range of their angle of external rotation (19-121°) than their static counterparts (40-60°). The ratio of the kink angles, ε and δ, scatters widely, indicating shock induced kinking is highly asymmetrical. A marked decrease of 2V from 24 to 7° with increasing pressure is observed. Laue transmission patterns show that permanent angular rotations as great as 4.4° are induced by shock pressures of 37.5 kb. In individual samples the increase in permanent angular rotations and decrease in 2V can be closely correlated.
Additional Information
© 1969 American Journal of Science. This research was supported by NASA Grant NGR-05-002-105. We appreciate the assistance of J. Lower and D. Tanner in performing the experiments. We thank E. C. T. Chao for providing the sample material, A. Albee for his microprobe analysis, and P. Duwez for the use of his X-ray facilities. Comments from N. L. Carter, D. Cummings, and I. Borg were most helpful.Additional details
- Eprint ID
- 62293
- Resolver ID
- CaltechAUTHORS:20151120-132936753
- NGR-05-002-105
- NASA
- Created
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2015-11-23Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
- Other Numbering System Name
- Caltech Division of Geological Sciences
- Other Numbering System Identifier
- 1600