Abstract
Characterization of shocked phases has been carried out by X-ray and electron devices on selected grains. Shocked phases are considered to be not a single phase of mineral but aggregates of various crystalline and amorphous phases. X-ray calculated density-deviation reveals itself to be an useful indicator of shock metamorphism at impact based upon selected data from the shocked aggregates. Main cause of the high density of shocked quartz is shrinkage of atomic distances mainly due to relic crystalline structure by quenching under high pressure and temperature conditions. Shocked glasses give important information on impact target rocks. Shocked graphites and chaoite-like carbon with high-density are also found in shocked graphite nodule aggregates of the Barringer crater.
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© 1995 Springer-Verlag Berlin Heidelberg
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Miura, Y. et al. (1995). Shocked Quartz, Silica and Carbon Materials in Meteorites and Impact Craters. In: Brun, R., Dumitrescu, L.Z. (eds) Shock Waves @ Marseille III. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-78835-2_68
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DOI: https://doi.org/10.1007/978-3-642-78835-2_68
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-78837-6
Online ISBN: 978-3-642-78835-2
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