Hornblende Gneiss/ Amphibolite
Granite Gneiss/ Granite
Granitic Gneiss undifferentiated
Quartzite/ Mica Schist
Biotitic Gneiss / Mica Schist/ Amphibolite
Ropes Creek Amphibolite - layered and massive amphibolite; locally includes hornblende migmatite and ultramafic pods.
Rock Mills Granite Gneiss - coarse to medium-grained biotite granite gneiss; locally includes thick bands of epidote and thin, small amphibolite bodies. Boundary between Rock Mills Granite Gneiss and Camp Hill Granite Gneiss arbitrarily defined.