Silurian - Ordovician Vassalboro formation
Silurian undifferentiated pelites and sandstones, in part of the Allsbury Formation and in part unnamed
Devonian - Silurian Madrid Formation
Silurian Waterville Formation
Hornblende-biotite quartz monzonite
Devonian Carrabassett Formation
Devonian Seboomook Formation
Silurian unnamed limestone
Biotite granite
Cambrian Grand Pitch Formation
Devonian - Ordovician Bucksport Formation
Devonian - Silurian undifferentiated sedimentary rocks of the Spider Lake, Chandler Pond and Third Lake Formations
Ordovician unnamed volcanic rocks
Devonian granite
Devonian hornblende-biotite granite to quartz monzonite- hornblende-biotite granite, hornblende-biotite granodiorite, hornblende-biotite tonalite, hornblende-biotite alkali feldspar quartz syenite, hornblende-biotite quartz syenite, and hornblende-biotite quartz monzonite.
Ordovician - Cambrian unnamed sedimentary rocks
Hornblende-biotite granodiorite
Silurian undifferentiated sandstones, in part of the Allsbury Formation and in part unnamed
Silurian unnamed sandstone
Devonian Matagamon Sandstone
Ordovician quartz diorite (hornblende accessory mineral)
Ordovician - Precambrian Z metasedimentary and metavolcanic rocks of the Passagassawakeag block
Devonian biotite granodiorite to biotite quartz diorite - biotite granodiorite, biotite tonalite, biotite quartz syenite, biotite quartz monzodiorite, and biotite quartz diorite.
Ordovician Wassataquoik Chert
Ordovician Belle Lake Slate
Devonian granite (intrusive breccia texture)
Silurian unnamed conglomerate
Silurian Waterville Formation limestone member
Ordovician unnamed felsic volcanic rocks
Silurian Sangerville Formation
Silurian unnamed sedimentary rocks
Ordovician Shin Brook Formation
Cambrian Jim Pond Formation mafic volcanic rocks
Devonian Swanback Formation
Undifferentiated volcanic rocks of the Spider Lake and Chandler Pond Formations
Silurian Smalls Falls Formation
Ordovician gabbro/diorite/ultramafic rocks
Ordovician unnamed pelite
Ordovician unnamed sulfidic pelite
Silurian Perry Mountain formation
Biotite granite undivided
Silurian undifferentiated conglomerates and coarse-grained sandstones, in part of the Allsbury Formation and in part unnamed
Devonian hornblende-biotite quartz diorite
Carboniferous - Devonian unnamed conglomerate and sandstone
Silurian - Ordovician unnamed conglomerate
Devonian Traveler Rhyolite Pogy member
Ordovician - Precambrian Z Cape Elizabeth Formation
Silurian unnamed conglomerate and sandstone
Ordovician - Precambrian Z interbedded pelite and quartz sandstone of the Passagassawakeag block
Devonian - Silurian unnamed sedimentary rocks
Devonian biotite monzodiorite
Silurian unnamed volcanic and sedimentary rocks
Ordovician - Precambrian Z calc-silicate rocks of the Passagassawakeag block
Silurian Sangerville Formation limestone member
Silurian - Ordovician Mattawamkeag Formation
Devonian - Ordovician unnamed pelite
Silurian Sangerville Formation Patch Mountain member
Silurian - Ordovician unnamed volcanic rocks