metabasalt

Etymology

From meta- + basalt.

metabasalt means an amphibolite produced from a basalt by metamorphism. Lexicurio rates it Sui generis — a strength score of 87 out of 100.

noun

An amphibolite produced from a basalt by metamorphism.“The abundant basalt and metabasalt clasts in sandstone and conglomerate of the Jansen Creek Member were most likely derived from the locally metamorphosed basalt in the Metchosin Volcanics that crops out along the southern margin of Vancouver Island”