Difference between revisions of "Lapilli"
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== Description == | == Description == | ||
| − | A size classification for small [http://cameo.mfa.org/materials/fullrecord.asp?name=pyroclastic | + | A size classification for small [http://cameo.mfa.org/materials/fullrecord.asp?name=pyroclastic%20rock pyroclastic] fragments of [http://cameo.mfa.org/materials/fullrecord.asp?name=lava 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 == | == Synonyms and Related Terms == | ||
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== Authority == | == Authority == | ||
| − | * | + | * Submitted information Comment: José Delgado Rodrigues, LNEC, 2009 |
| − | * | + | * Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: Lapilli (accessed March 2010) |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Revision as of 06:49, 24 July 2013
Description
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.)
Authority
- Submitted information Comment: José Delgado Rodrigues, LNEC, 2009
- Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: Lapilli (accessed March 2010)