Pyroclastic rock
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Pyroclastic rocks are clastic rocks composed of rock fragments produced and ejected by explosive volcanic eruptions. The individual rock fragments are known as pyroclasts. Pyroclastic rocks are a type
Rocks from the Bishop Tuff, uncompressed with pumice on left; compressed with fiamme on right.
Pyroclastic flow
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A pyroclastic flow, more broadly known as a pyroclastic density current, is a fast-moving current of hot gas and volcanic matter that flows along the ground away from a volcano. Pyroclastic currents t
Pyroclastic rock
…eruption plumes, from which pyroclasts settle to form topography-draping pyroclastic fall layers, and by pyroclastic density currents (PDCs) (including pyroclastic flows and pyroclastic surges), from which pyroclasts are deposited as pyroclastic density current deposits, which tend to thicken and coarsen in valleys, and…
Pyroclastic flows sweep down the flanks of Mayon Volcano, Philippines, in 2018
Building remnant in Francisco Leon destroyed by pyroclastic surges and flows during eruption of El Chichon volcano in Mexico in 1982. Reinforcement rods in the concrete were bent in the direction of the flow.
A scientist examines pumice blocks at the edge of a pyroclastic flow deposit from Mount St. Helens