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Pyroclastic material consists of fragments of rocks that forms during a volcanic eruption. Pyroclastic particles that are less than 2mm in diameter are called Volcanic Ash. Volcanic ash that are less than o.25 mm in diameter is called volcanic Dust. Large Pyroclastic particles that are less than 64 mm in diameter are called Lapilli

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Q: Define pyroclastic material and list three examples?
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How does an eruption produced a pyroclastic flow?

During an explosive eruption, a volcano sends out superheated ash, gas, and rock. Depending on the nature of the eruption, pyroclastic flows can develop in three ways:A lateral blast directly ejects the flow, though this is a rather rare event. In another scenario, dense pyroclastic material erupts and spills out of the vent or over the crater rim. In still other cases a vertical eruption column collapses and material flows downhill.In all cases the flow involves a mass of ash, rock, and gas that is too dense to rise on its own, and instead hugs the ground.Most pyroclastic flows are produced during explosive eruptions of stratovolcanoes.


How does an explosives eruptions produce pyroclastic flow?

During an explosive eruption, a volcano sends out superheated ash, gas, and rock. Depending on the nature of the eruption, pyroclastic flows can develop in three ways:A lateral blast directly ejects the flow, though this is a rather rare event. In another scenario, dense pyroclastic material erupts and spills out of the vent or over the crater rim. In still other cases a vertical eruption column collapses and material flows downhill.In all cases the flow involves a mass of ash, rock, and gas that is too dense to rise on its own, and instead hugs the ground.Most pyroclastic flows are produced during explosive eruptions of stratovolcanoes.


How does explosive eruption produce pyroclastic flow?

During an explosive eruption, a volcano sends out superheated ash, gas, and rock. Depending on the nature of the eruption, pyroclastic flows can develop in three ways:A lateral blast directly ejects the flow, though this is a rather rare event. In another scenario, dense pyroclastic material erupts and spills out of the vent or over the crater rim. In still other cases a vertical eruption column collapses and material flows downhill.In all cases the flow involves a mass of ash, rock, and gas that is too dense to rise on its own, and instead hugs the ground.Most pyroclastic flows are produced during explosive eruptions of stratovolcanoes.


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How does an explosive eruption products a pyroclastic flow?

During an explosive eruption, a volcano sends out superheated ash, gas, and rock. Depending on the nature of the eruption, pyroclastic flows can develop in three ways:A lateral blast directly ejects the flow, though this is a rather rare event. In another scenario, dense pyroclastic material erupts and spills out of the vent or over the crater rim. In still other cases a vertical eruption column collapses and material flows downhill.In all cases the flow involves a mass of ash, rock, and gas that is too dense to rise on its own, and instead hugs the ground.Most pyroclastic flows are produced during explosive eruptions of stratovolcanoes.


What three types of materials are ejected during a volcanic eruption?

The types of volcanic material include: - Lava : liquid rock (felsic or mafic magma) - Ash : pulverized or oxidized rock, the smallest particles of ejected rock - Gases : carbon dioxide, sulfur compounds, and water vapor - Pyroclastic flows : extremely hot gas and rock, typically flowing at hundreds of miles per hour. - Volcanic bombs : heavy masses of solid or liquid rock * Ash, pyroclastic particles, and bombs are collectively known as tephra.


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