👉 Microclastic is a type of volcanic eruption that occurs when magma from a volcano erupts within the Earth's crust. This type of eruption can cause small, harmless fragments or particles to be released into the atmosphere, which can then settle and accumulate over time. Microclasts are typically smaller than 1 cm (0.4 inches) in size and are often found in volcanic ash clouds. They are not large enough to be seen with the naked eye but can be picked up by a microscope