Geology glossary
Updated: Dec 5, 2021 06:29 GMT -
accretionary lapilli
- Volcanology
Accretionary lapilli in an ash deposit on Santorini.Small spherical balls of volcanic ashAccretionary lapilli are small spherical balls of volcanic ash that form from a wet nucleus falling through a volcanic ash cloud. They can flatten on hitting the ground or may roll on loose ash and grow like a snowball.
