Geologic units in Piscataquis county, Maine

Devonian Seboomook Formation (Devonian) at surface, covers 29 % of this area

Devonian Seboomook Formation

Devonian granite (Devonian) at surface, covers 10 % of this area

Biotite granite

Devonian Carrabassett Formation (Devonian) at surface, covers 8 % of this area

Devonian Carrabassett Formation

Devonian - Silurian Madrid Formation (Devonian - Silurian) at surface, covers 7 % of this area

Devonian - Silurian Madrid Formation

Devonian Carrabassett Formation, massive pelite member (Devonian) at surface, covers 6 % of this area

Devonian Carrabassett Formation massive pelite member

Silurian Sangerville Formation (Silurian) at surface, covers 4 % of this area

Silurian Sangerville Formation

Undifferentiated volcanic rocks of the Spider Lake and Chandler Pond Formations (Devonian - Silurian) at surface, covers 3 % of this area

Undifferentiated volcanic rocks of the Spider Lake and Chandler Pond Formations

Ordovician - Cambrian unnamed sedimentary rocks (Ordovician - Cambrian) at surface, covers 2 % of this area

Ordovician - Cambrian unnamed sedimentary rocks

Ordovician Bluffer Pond formation (Ordovician) at surface, covers 2 % of this area

Ordovician Bluffer Pond formation

Ordovician - Cambrian Chase Brook Formation (Ordovician - Cambrian) at surface, covers 2 % of this area

Ordovician - Cambrian Chase Brook Formation

Undifferentiated mafic to felsic volcanic rocks (Devonian - Ordovician) at surface, covers 2 % of this area

Undifferentiated mafic to felsic volcanic rocks

Devonian gabbro (Devonian) at surface, covers 2 % of this area

Devonian gabbro

Ordovician Munsungun Lake Formation (Ordovician) at surface, covers 2 % of this area

Ordovician Munsungun Lake Formation

Ordovician unnamed volcanic rocks (Ordovician) at surface, covers 2 % of this area

Ordovician unnamed volcanic rocks

Devonian Tarratine Formation (Devonian) at surface, covers 1 % of this area

Devonian Tarratine Formation

Devonian Ironbound Mountain Formation (Devonian) at surface, covers 1 % of this area

Devonian Ironbound Mountain Formation

Devonian diorite (Devonian) at surface, covers 1 % of this area

Biotite diorite

Devonian - Silurian undifferentiated sedimentary rocks of the Spider Lake, Chandler Pond and Third Lake Formations (Devonian - Silurian) at surface, covers 1 % of this area

Devonian - Silurian undifferentiated sedimentary rocks of the Spider Lake, Chandler Pond and Third Lake Formations

Cambrian Hurricane Mountain Formation (Cambrian) at surface, covers 1 % of this area

Cambrian Hurricane Mountain Formation

Devonian Traveler Rhyolite Pogy member (Devonian) at surface, covers 1.0 % of this area

Devonian Traveler Rhyolite Pogy member

Devonian granite (Devonian) at surface, covers 0.9 % of this area

Devonian granite

Devonian granodiorite (hornblende accessory mineral) (Devonian) at surface, covers 0.8 % of this area

Hornblende-biotite granodiorite

Ordovician Lobster Mountain volcanic complex (Ordovician) at surface, covers 0.8 % of this area

Ordovician Lobster Mountain volcanic complex

Devonian Tomhegan Formation (Devonian) at surface, covers 0.7 % of this area

Devonian Tomhegan Formation

Devonian Seboomook Formation, unnamed pelite (Devonian) at surface, covers 0.7 % of this area

Devonian Seboomook Formation unnamed pelite

Silurian Sangerville Formation, limestone member (Silurian) at surface, covers 0.7 % of this area

Silurian Sangerville Formation limestone member

Silurian - Ordovician Frontenac Formation (Silurian - Ordovician) at surface, covers 0.7 % of this area

Silurian - Ordovician Frontenac Formation

Traveler Rhyolite, Black Cat Member (Devonian) at surface, covers 0.7 % of this area

Traveler Rhyolite, Black Cat Member

Cambrian Jim Pond Formation, mafic volcanic rocks (Cambrian) at surface, covers 0.7 % of this area

Cambrian Jim Pond Formation mafic volcanic rocks

Silurian Ripogenus Formation (Silurian) at surface, covers 0.5 % of this area

Silurian Ripogenus Formation

Devonian - Silurian Allagash Lake Formation, basalt and mixed sedimentary rocks (Devonian - Silurian) at surface, covers 0.5 % of this area

Devonian - Silurian Allagash Lake Formation, basalt and mixed sedimentary rocks

Devonian Matagamon Sandstone (Devonian) at surface, covers 0.5 % of this area

Devonian Matagamon Sandstone

Silurian unnamed limestone (Silurian) at surface, covers 0.5 % of this area

Silurian unnamed limestone

Devonian granodiorite - quartz diorite (Devonian) at surface, covers 0.5 % of this area

Devonian biotite granodiorite to biotite quartz diorite - biotite granodiorite, biotite tonalite, biotite quartz syenite, biotite quartz monzodiorite, and biotite quartz diorite.

Ordovician gabbro/diorite/ultramafic rocks (Ordovician) at surface, covers 0.4 % of this area

Ordovician gabbro/diorite/ultramafic rocks

Ordovician Chase Lake Formation (Ordovician) at surface, covers 0.4 % of this area

Ordovician Chase lake formation

Devonian granite (granophyric texture) (Devonian) at surface, covers 0.4 % of this area

Devonian granite (granophyric texture)

Ordovician - Cambrian Sawmill Formation (Ordovician - Cambrian) at surface, covers 0.4 % of this area

Ordovician - Cambrian Sawmill Formation

Cambrian Caucomgomoc Lake Formation, basalt member (Cambrian) at surface, covers 0.3 % of this area

Cambrian Caucomgomoc Lake Formation, basalt member

Ordovician - Cambrian Hurd Mountain Formation (Ordovician - Cambrian) at surface, covers 0.3 % of this area

Ordovician - Cambrian Hurd Mountain formation

Silurian Smalls Falls Formation (Silurian) at surface, covers 0.3 % of this area

Silurian Smalls Falls Formation

Devonian Trout Valley Formation (Devonian) at surface, covers 0.3 % of this area

Devonian Trout Valley Formation

Silurian The Forks Formation (Silurian) at surface, covers 0.2 % of this area

Silurian The Forks Formation

Silurian Perry Mountain Formation (Silurian) at surface, covers 0.2 % of this area

Silurian Perry Mountain formation

Silurian Sangerville Formation, conglomerate member (Silurian) at surface, covers 0.2 % of this area

Silurian Sangerville Formation conglomerate member

Ordovician - Cambrian Dead River Formation, lower member (Ordovician - Cambrian) at surface, covers 0.2 % of this area

Ordovician - Cambrian Dead River formation lower member

Cambrian Loon Stream Formation (Cambrian) at surface, covers 0.2 % of this area

Cambrian Loon Stream Formation

Ordovician - Cambrian Hurd Mountain Formation, basalt member (Ordovician - Cambrian) at surface, covers 0.1 % of this area

Ordovician - Cambrian Hurd Mountain formation basalt member

Ordovician - Cambrian unnamed volcanic rocks (Ordovician - Cambrian) at surface, covers 0.1 % of this area

Ordovician - Cambrian unnamed volcanic rocks

Ordovician - Cambrian Southeast Cove Formation (Ordovician - Cambrian) at surface, covers 0.1 % of this area

Ordovician - Cambrian Southeast Cove Formation

Devonian gabbro/diorite/ultramafic rocks (Devonian) at surface, covers 0.1 % of this area

Devonian gabbro/diorite/ultramafic rocks

Tomhegan Formation, Kineo Rhyolite Member, Massive Felsite (Devonian) at surface, covers 0.1 % of this area

Tomhegan Formation, Kineo Rhyolite Member, Massive Felsite

Devonian Carrabassett Formation, thinly layered member (Devonian) at surface, covers 0.1 % of this area

Devonian Carrabassett Formation thinly layered member

Ordovician Blind Brook Formation (Ordovician) at surface, covers 0.1 % of this area

Ordovician Blind Brook Formation

Ordovician - Cambrian Dead River Formation, upper member (Ordovician - Cambrian) at surface, covers < 0.1 % of this area

Ordovician - Cambrian Dead River formation upper member

Silurian Waterville Formation (Silurian) at surface, covers < 0.1 % of this area

Silurian Waterville Formation

Devonian unnamed lithic sandstone and conglomerate (Devonian) at surface, covers < 0.1 % of this area

Devonian unnamed lithic sandstone and conglomerate

Ordovician Chase Lake Formation, conglomerate member (Ordovician) at surface, covers < 0.1 % of this area

Ordovician Chase lake Formation conglomerate member

Devonian - Silurian Allagash Lake Formation, mixed sedimentary rocks (Devonian - Silurian) at surface, covers < 0.1 % of this area

Devonian - Silurian Allagash Lake Formation mixed sedimentary rocks

Silurian Rangeley Formation, "C" member (Silurian) at surface, covers < 0.1 % of this area

Silurian Rangeley Formation ""C"" member

Cambrian Caucomgomoc Lake Formation, quartzwacke and pelite member (Cambrian) at surface, covers < 0.1 % of this area

Cambrian Caucomgomoc Lake Formation quartzwacke and pelite member

Devonian Tarratine Formation Misery Quartzite (Devonian) at surface, covers < 0.1 % of this area

Devonian Tarratine Formation Misery Quartzite

Devonian granodiorite - quartz monzodiorite (hornblende accessory mineral) (Devonian) at surface, covers < 0.1 % of this area

Devonian hornblende-biotite granodiorite to quartz monzodiorite - hornblende-biotite granodiorite, hornblende-biotite tonalite, hornblende-biotite quartz syenite, and hornblende-biotite quartz monzodiorite.

Silurian West Branch Volcanic Rocks (Silurian) at surface, covers < 0.1 % of this area

Silurian West Branch Volcanic Rocks

Ordovician Holmes Hole Formation (Ordovician) at surface, covers < 0.1 % of this area

Ordovician Holmes Hole Formation

Devonian Carrabassett Formation, quartzite member (Devonian) at surface, covers < 0.1 % of this area

Devonian Carrabassett Formation quartzite member

Ordovician Lobster Mountain volcanic complex, basalt member (Ordovician) at surface, covers < 0.1 % of this area

Ordovician Lobster Mountain volcanic complex basalt member

Devonian quartz monzodiorite - quartz diorite (pyroxene plus hornblende accessory mineral) (Devonian) at surface, covers < 0.1 % of this area

Devonian pyroxene-hornblende-biotite quartz monzodiorite to quartz diorite - pyroxene-hornblende-biotite quartz monzodiorite and pyroxene-hornblende-biotite quartz diorite.

Ordovician Chase Lake Formation, sandstone and pelite member (Ordovician) at surface, covers < 0.1 % of this area

Ordovician Chase Lake Formation sandstone and pelite member

Devonian quartz diorite (hornblende accessory mineral) (Devonian) at surface, covers < 0.1 % of this area

Devonian hornblende-biotite quartz diorite

Whiskey Quartzite (Devonian) at surface, covers < 0.1 % of this area

Whiskey Quartzite

Silurian Capens Formation (Silurian) at surface, covers < 0.1 % of this area

Silurian Capens Formation

Devonian Seboomook Formation, unnamed conglomerate (Devonian) at surface, covers < 0.1 % of this area

Devonian Seboomook Formation unnamed conglomerate

Devonian unnamed rhyolite (Devonian) at surface, covers < 0.1 % of this area

Devonian unnamed rhyolite

Silurian - Ordovician Lobster Lake Formation (Silurian - Ordovician) at surface, covers < 0.1 % of this area

Silurian - Ordovician Lobster Lake Formation

Devonian - Silurian Frost Pond Formation (Devonian - Silurian) at surface, covers < 0.1 % of this area

Devonian - Silurian Frost Pond Formation

Ordovician Dry Wall Volcanic rocks (Ordovician) at surface, covers < 0.1 % of this area

Ordovician Dry Wall Volcanic rocks

Ordovician Lobster Mountain volcanic complex, andesite member (Ordovician) at surface, covers < 0.1 % of this area

Ordovician Lobster Mountain volcanic complex andesite member

Silurian undifferentiated pelites and sandstones (Silurian) at surface, covers < 0.1 % of this area

Silurian undifferentiated pelites and sandstones, in part of the Allsbury Formation and in part unnamed

Devonian Seboomook Formation, unnamed mafic greenstone (Silurian-Devonian) at surface, covers < 0.1 % of this area

Devonian Seboomook Formation unnamed mafic greenstone

Silurian Sangerville Formation, Patch Mountain member (Silurian) at surface, covers < 0.1 % of this area

Silurian Sangerville Formation Patch Mountain member

Devonian Hildreths Formation (Devonian) at surface, covers < 0.1 % of this area

Devonian Hildreths Formation

Devonian quartz monzonite (Devonian) at surface, covers < 0.1 % of this area

Devonian quartz monzonite

Ordovician Bluffer Pond Formation, rhyolite member (Ordovician) at surface, covers < 0.1 % of this area

Ordovician Bluffer Pond Formation rhyolite member

Devonian unnamed garnet rhyolite (Devonian) at surface, covers < 0.1 % of this area

Devonian unnamed garnet rhyolite

Cambrian gabbro/diorite/ultramafic rocks (Cambrian) at surface, covers < 0.1 % of this area

Cambrian gabbro/diorite/ultramafic rocks