plutonism
Plu"to*nism, n. Etym: [Cf. F. plutonisme.] Defn: The theory, early advanced in geology, that the successive rocks of the earth''s crust were formed by igneous fusion; -- opposed to the Neptunian theory.
Plu"to*nism, n. Etym: [Cf. F. plutonisme.] Defn: The theory, early advanced in geology, that the successive rocks of the earth''s crust were formed by igneous fusion; -- opposed to the Neptunian theory.