pyroklastilist

Pyroklastilist is a term used in geology to describe a rock composed primarily of pyroclastic material. Pyroclastic material refers to fragments of rock and volcanic glass that are ejected during a volcanic eruption. These fragments can range in size from fine ash to large bombs and blocks. The composition of pyroclastic rocks depends on the type of volcanic eruption and the materials involved.

Common types of pyroclastic rocks include tuff, which is formed from consolidated volcanic ash, and agglomerate or breccia, which are composed of larger volcanic fragments. Pyroclastic rocks are often porous and can be relatively lightweight due to the presence of vesicles (gas bubbles) within the volcanic glass or rock fragments. They are found in volcanic areas worldwide and can form distinctive landforms such as volcanic cones and plateaus. The study of pyroclastic rocks provides valuable insights into past volcanic activity, eruption styles, and the composition of the Earth's crust.