CZms
Mather Gorge Formation (Early Cambrian and(or) Neoproterozoic) Schist
DI
Lamprophyre dike (Late Devonian)
CZmg
Mather Gorge Formation (Early Cambrian and(or) Neoproterozoic) Metagraywacke
Ob
Bear Island Granodiorite (Early Ordovician (?))
CZa
Metavolcanic and meta-igneous rocks of uncertain origin (Lower Cambrian and Neoproterozoic) Amphibolite
Pzq
Vein Quartz bodies (Paleozoic)
CZmms
Mather Gorge Formation (Early Cambrian and(or) Neoproterozoic) Migmatitic Schist
CZmmg
Mather Gorge Formation (Early Cambrian and(or) Neoproterozoic) Migmatitic Metagraywacke