3.4.5 Igneous Textures: Pyroclastic Rocks and Pegmatites
Channel: Snow Mountain
Date: 2020-09-21

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3.4.5 Igneous Textures: Pyroclastic Rocks and Pegmatites

What is Pyroclastic, or fragmental, texture. Some igneous rocks are formed from the consolidation of individual rock fragments that are ejected during a violent volcanic eruption. The ejected particles might be very fine ash, molten blobs, or large angular blocks torn from the walls of the vent during the eruption. Igneous rocks composed of these rock fragments are said to have a pyroclastic texture, sometimes referred to as fragmental texture.

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