Grain-size distributions of pyroclastic deposits |
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| Authors: | LUCIO LIRER ANNA VINCI† |
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| Institution: | Dipartimento di Geofisica e Vulcanologia, Universitàdi Napoli, Largo San Marcellino 10, 80138 Napoli, Italy;Istituto di Petrografia, Universitàdi Parma, Viale delle Scienze 78, Parma, Italy |
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| Abstract: | A multivariate statistical technique (principal component analysis) has been used to investigate the granulometric features of 414 samples of pyroclastic rocks: 216 samples were collected from areas of recent and active volcanism in Central and Southern Italy; data for the remaining 198 samples were obtained from the literature and relate to products from Somma-Vesuvio, Mount St Helens and the Japanese volcanic arc. The analysis offers an improved means of discriminating pyroclastic deposits using their grain-size characteristics. |
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