Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6438369 | Geochimica et Cosmochimica Acta | 2014 | 35 Pages |
Abstract
Small volumes of shock melt (<100 μm) quench rapidly (0.01 s), whereas thermal equilibration will occur within 1.2 s in larger volumes of melt (1 mm2). The apparent variation in shock pressure recorded by variable mineral assemblages within and around shock melts in Tissint is consistent with a shock pulse on the order of 10-20 ms combined with a longer duration of post-shock cooling and complex thermal history. This implies that the impact on Mars that shocked and ejected Tissint at â¼1 Ma was not exceptionally large.
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Physical Sciences and Engineering
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Authors
E.L. Walton, T.G. Sharp, J. Hu, J. Filiberto,