The geology the range includes limestone, sandstone, and siltstone of Cambrian to Cretaceous age which were intruded by alkaline intrusives of monzonite, syenite to tinguaite composition of Cretaceous to Tertiary age.
The geological makeup of the range comprises limestone, sandstone, and siltstone dating from the Cambrian to Cretaceous periods, which were intruded by alkaline igneous rocks of monzonite, syenite, and tinguaite compositions spanning from the Cretaceous to Tertiary periods.