Impact-shocked zircons: Discovery of shock-induced textures reflecting increasing degrees of shock metamorphism
Earth and Planetary Science Letters
By: B.F. Bohor, W.J. Betterton, and T.E. Krogh
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Abstract
Textural effects specifically characteristic of shock metamorphism in zircons from impact environments have not been reported previously. However, planar deformation features (PDF) due to shock metamorphism are well documented in quartz and other mineral grains from these same environments. An etching technique was developed that allows SEM visualization of PDF and other probable shock-induced textural features, such as granular (polycrystalline) texture, in zircons from a variety of impact shock environments. These textural features in shocked zircons from K/T boundary distal ejecta form a series related to increasing degrees of shock that should correlate with proportionate resetting of the UPb isotopic system.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Impact-shocked zircons: Discovery of shock-induced textures reflecting increasing degrees of shock metamorphism |
| Series title | Earth and Planetary Science Letters |
| DOI | 10.1016/0012-821X(93)90149-4 |
| Volume | 119 |
| Issue | 3 |
| Year Published | 1993 |
| Language | English |
| Publisher | Elsevier |
| Description | 6 p. |
| First page | 419 |
| Last page | 424 |
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