Preferred Term:
volcanic rocks
Definition:
Volcanic rocks are formed by solidification of molten materials which have been extruded onto the ground surface.
Concept Schemes:
NALT Core
NALT Full
NALT Full
Broader Concept:
Entry Terms:
- lava rocks
URI:
https://lod.nal.usda.gov/nalt/15964
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RDF/XMLCreated 2006-01-19, last modified 2016-10-25