pyroclastic flow

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pyroclastic flow

Magma streaming down a volcano.

A chart categorizes common textural terms for rocks by grain size in millimeters, dividing them into igneous and metamorphic, sedimentary, and pyroclastic types, with terms like phaneritic, sand, silt, breccia, and ash shown in relation to size.

pyroclastic flow: Media

volcanism

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Magma streaming down a volcano.

How Volcanoes Work, Explained By a Volcanologist

Volcanologist Janine Krippner dives into the details.

Video: Encyclopædia Britannica, Inc.

Images

pyroclastic flow

pyroclastic flow

A pyroclastic flow—which is made up of a fluidized mixture of hot rock fragments,...

U.S. Geological Survey

A chart categorizes common textural terms for rocks by grain size in millimeters, dividing them into igneous and metamorphic, sedimentary, and pyroclastic types, with terms like phaneritic, sand, silt, breccia, and ash shown in relation to size.

rock textural terms

Encyclopædia Britannica, Inc.

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