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ash-flow tuff
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ash-flow tuff

geology

Learn about this topic in these articles:

pyroclastic flows

  • pyroclastic flow
    In pyroclastic flow

    …flows leave deposits known as tuff, which are made up mainly of ash-sized fragments. Nuée ardente deposits are confined mainly in valleys, while ignimbrites form plateaulike deposits that bury the previous topography (the configuration of the surface). Thick ignimbrites that were very hot when erupted may compact and consolidate into…

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