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THERMAL FATIGUE: A POSSIBLE SOURCE OF STRUCTURAL MODIFICATIONS IN METEORITES |
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| Authors: | F A Levi |
| Abstract: | Periodic thermal excursions, even in a low-temperature range, may cause internal stresses and give origin to some of the observed plastic and clastic deformations in stony meteorites. An experimental test confirms our hypothesis: lattice distortions, cleavage and cracking were artificially induced in specimens of two H-chondrites (Mills and Bur-Gheluai) by low-temperature “thermal fatigue.” The observed effects appear to be increasing with increasing number of cycles. |
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