Note 15 — Chapter VIII · NORTHERN CHILE.—CONCLUSION. (continued 2)
Reading edition
Sir R. Murchison and his companions state (“Geolog. Proc.,” vol. iii, p. 747), that no true granite appears in the higher Ural Mountains; but that syenitic greenstone—a rock closely analogous to our andesite—is far the most abundant of the intrusive masses.