Abstract
No unique classification for pyroclastic rocks can be made and at least two systems are required; 1): a genetic classification to interpret the genesis of a deposit and 2): a lithological classification which may be solely descriptive, but also which may be used to discriminate on a lithological basis the mechanisms which produce a particular pyroclastic deposit. Genetic classification schemes are presented for various types of fall, flow and surge deposits. A lithological classification is based on the grain size limits and distribution, constituent fragments, and degree and type of welding.
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Wright, J.V., Smith, A.L., Self, S. (1981). A Terminology for Pyroclastic Deposits. In: Self, S., Sparks, R.S.J. (eds) Tephra Studies. NATO Advanced Study Institutes Series, vol 75. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-8537-7_33
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DOI: https://doi.org/10.1007/978-94-009-8537-7_33
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