Evidence of earth catastrophe by anomalous shocked quartz at the K/T boundary |
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| Authors: | YASUNORI MIURA Toshio KATO Masashi Imai |
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| Institution: | (1) Faculty of Science, Yamaguchi University, Yoshida, Yamaguchi 753, Japan |
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| Abstract: | Anomalous shocked quartz with high density (less than 1 % of density-deviation) is considered to be a relict of ultra high-pressure at meteoritic impact. The shocked quartz grains can be found only in terrestrial and artificial impact craters, meteorites and the Cretaceous-Tertiary (K/T) boundary samples. Volcanic activity is considered to be started or accelerated by enormous impact event. |
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| Keywords: | K/T boundary problem shocked quartz impact craters density deviation formation process |
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