Rocks composed chiefly of fragments of volcanic material.
Some rocks are pyroclastic but most are not.
Pyroclastic flow.
volcanic pyroclastic = 'a'ā
an explosive volcano will usually have a pyroclastic flow
Yes. It is not uncommon for rhyolitic material to form pyroclastic flows.
No. Magma is molten rock that is beneath earth's surface. When it erupts it can form lava or pyroclastic material. Although pyroclastic material can form rocks, most rocks are not from pyroclastic material.
Pyroclastic flow
Pyroclastic material is more often felsic (acidic) or intermediate, but mafic (basic) pyroclastic material may also occur.
No. A pyroclastic flow can move at well over 100 mph.
No. Although a pyroclastic eruption will produce toxic gasses, the pyroclastic material itself consists of sperheated ash, pumice, and rock fragments.
A pyroclastic eruption, involving a viscous magma, typically of rhyolitic or andesitic type. An ignimbrite is the deposit of a pyroclastic density current, or pyroclastic flow.
The pyroclastic flow from the volcano devastated the surrounding area, burying everything in its path under a blanket of ash and hot gases.