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What Pyroclastic material less than 0.25mm in the diameter called?
Wiki User
∙ 7y ago
Pyroclasts are single fragments that are produced following a volcanic eruptions where there expanding gases rapidly erupt resulting in either the fragmentation or obliteration of rock and magma. Fine-grained pyroclastic material is generally made from ash cause by extremely high fragmentation of rock or magma.
Wiki User
∙ 9y ago
Wiki User
∙ 12y agoPyroclastic fragments are referred to as tephra.
Tephra comes in all sizes:
Volcanic bombs - large, often streamline fragments ranging in size from 2 inches to the size of a school bus.
Lapilli - Latin for "little stones", these fragments are gravel sized.
Cinders - sand sized fragments.
Ash - finest volcanic material.
Wiki User
∙ 9y agoPyroclastic material is material which comes from a volcano, usually during volcanic activity. It is comprised of volcanic ash, gases, rock and lava fragments. It may be carried in a lava flow (pyroclastic flow) or in a cloud.
Wiki User
∙ 12y agoVolcanic Blocks
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