A size classification for small pyroclastic fragments of lava. Lapilli means "little stones" in Latin. Formed by droplets of molten lava, cooled in the air, the stones range in size from 2 to 64 mm. Lapilli occur in spheroid, teardrop, dumbbell, or button-like shapes.
Synonyms and Related Terms
lapillus (singular); lapilli (Port.)
Sources Checked for Data in Record
- Submitted information Comment: José Delgado Rodrigues, LNEC, 2009
- Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: Lapilli (accessed March 2010)