Simple Lithology

glass rich igneous rock

http://resource.geosciml.org/classifier/cgi/lithology/glass_rich_igneous_rock

definition Igneous rock that contains greater than 50 percent massive glass. more like this
source This vocabulary, based on Gillespie and Styles 1999 more like this
type
Resource
Concept
broader igneous rock
narrower glass rich igneous rock
in scheme simplelithology
is primary topic of glass rich igneous rock
narrower glassy igneous rock
broader glass rich igneous rock