supracrustals  search
BTmetamorphic rocks
 .supracrustals
RTtectonics
 metamorphism
 greenstone belts
 basement
 basement tectonics
 schist belts
 metasedimentary rocks
 metavolcanic rocks
SNSedimentary and volcanic rocks which are sufficiently untransformed for them to be recognizable. Added to Thesaurus in 1993.