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Geologic units in Androscoggin county, Maine

Additional scientific data in this geographic area

Silurian Sangerville Formation (Silurian) at surface, covers 31 % of this area

Silurian Sangerville Formation

Silurian Sangerville Formation, Patch Mountain member (Silurian) at surface, covers 21 % of this area

Silurian Sangerville Formation Patch Mountain member

Silurian - Ordovician Vassalboro Formation (Silurian - Ordovician) at surface, covers 12 % of this area

Silurian - Ordovician Vassalboro formation

Carboniferous alkali feldspar granite (muscovite accessory, abundant sedimentary inclusions) (Carboniferous) at surface, covers 12 % of this area

Muscovite-biotite granite

Devonian granite (muscovite accessory mineral) (Devonian) at surface, covers 7 % of this area

Muscovite-biotite granite undivided

Silurian Waterville Formation (Silurian) at surface, covers 5 % of this area

Silurian Waterville Formation

Carboniferous alkali feldspar granite (muscovite accessory mineral) (Carboniferous) at surface, covers 3 % of this area

Muscovite-biotite granite

Devonian granite (Devonian) at surface, covers 3 % of this area

Devonian granite

Silurian Sangerville Formation, Anasagunticook member (Silurian) at surface, covers 2 % of this area

Silurian Sangerville Formation Anasagunticook member

Silurian Sangerville Formation, sulfidic pelite member (Silurian) at surface, covers 2 % of this area

Silurian Sangerville Formation sulfidic pelite member

Silurian Sangerville Formation, limestone member (Silurian) at surface, covers 1 % of this area

Silurian Sangerville Formation limestone member

Carboniferous gabbro/diorite/ultramafic rocks (Carboniferous) at surface, covers 0.8 % of this area

Carboniferous gabbro/diorite/ultramafic rocks undivided

Devonian granodiorite (Devonian) at surface, covers 0.6 % of this area

Biotite granodiorite

Carboniferous syenite (Carboniferous) at surface, covers 0.2 % of this area

Carboniferous biotite syenite undivided

Silurian Sangerville Formation, Anasagunticook member limestone (Silurian) at surface, covers 0.1 % of this area

Silurian Sangerville Formation Anasagunticook member limestone

Silurian Unnamed sulfidic pelite (Silurian) at surface, covers < 0.1 % of this area

Silurian Unnamed sulfidic pelite

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

Silurian Waterville Formation limestone member