nuée ardente

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‘A glowing cloud of volcanic ash, pumice, and larger pyroclasts which moves rapidly downslope, typically starting as large blocks, and then fragmenting to a mixture of dust through to house-sized particles’ (Mursik et al. (2005) Rep. Prog. Phys. 68). The material from a nuée ardente consolidates to form ignimbrite (welded tuff).

Subjects: Earth Sciences and Geography.

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