can even recede as a result of land production from the mass and volume flux of pyroclastic currents. Additionally, pyroclastic currents can be observed on other astronomical bodies, such as the moon.

Etymology

The word pyroclast is derived from the Greek ??? (pýr), meaning "fire", and ??????? (klastós), meaning "broken in pieces". A name for pyroclastic flows that glow red in the dark is nuée ardente (French, "burning cloud"); this was notably used to describe

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