Geologic units in Knox county, Maine

Devonian granite (Devonian) at surface, covers 15 % of this area

Devonian granite

Penobscot Formation (Ordovician - Cambrian) at surface, covers 15 % of this area

Penobscot Formation

Ordovician - Cambrian Megunticook Formation (Ordovician - Cambrian) at surface, covers 11 % of this area

Ordovician - Cambrian Megunticook Formation

Devonian - Precambrian Z Appleton Ridge Formation (Devonian - Precambrian Z) at surface, covers 8 % of this area

Devonian - Precambrian Z Appleton Ridge Formation

Ordovician unnamed sandstone (Ordovician) at surface, covers 7 % of this area

Ordovician unnamed sandstone

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

Muscovite-biotite granite undivided

Devonian - Ordovician Bucksport Formation (Devonian - Ordovician) at surface, covers 7 % of this area

Devonian - Ordovician Bucksport Formation

Ordovician Benner Hill Formation (Ordovician) at surface, covers 4 % of this area

Ordovician Benner Hill formation

Ordovician unnamed quartz sandstone and pelite (Ordovician) at surface, covers 4 % of this area

Ordovician unnamed quartz sandstone and pelite

Precambrian Z North Haven Formation (Precambrian) at surface, covers 3 % of this area

Precambrian Z North Haven Formation

Precambrian Z Ogier Point Formation (Precambrian) at surface, covers 2 % of this area

Precambrian Z Ogier Point Formation

Ordovician Benner Hill Formation, sulfidic pelite (Ordovician) at surface, covers 2 % of this area

Ordovician Benner Hill Formation sulfidic pelite

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

Devonian biotite syenite undivided

Devonian gabbro/diorite/ultramafic rocks (Devonian) at surface, covers 2 % of this area

Devonian gabbro/diorite/ultramafic rocks

Ordovician - Precambrian Z Cape Elizabeth Formation (Ordovician - Precambrian Z) at surface, covers 2 % of this area

Ordovician - Precambrian Z Cape Elizabeth Formation

Ordovician - Precambrian Z metasedimentary and metavolcanic rocks of the Passagassawakeag block (Ordovician - Precambrian Z) at surface, covers 2 % of this area

Ordovician - Precambrian Z metasedimentary and metavolcanic rocks of the Passagassawakeag block

Ordovician unnamed sandstone and pelite (Ordovician) at surface, covers 1 % of this area

Ordovician unnamed sandstone and pelite

Precambrian Z Coombs Limestone (Precambrian Z) at surface, covers 0.9 % of this area

Precambrian Z Coombs Limestone

Precambrian Z rocks of Islesboro (Precambrian Z) at surface, covers 0.7 % of this area

Precambrian Z rocks of Islesboro

Devonian - Silurian Castine Formation (Devonian - Silurian) at surface, covers 0.6 % of this area

Devonian - Silurian Castine Formation

Precambrian Z rocks of Islesboro limestone (Precambrian) at surface, covers 0.6 % of this area

Precambrian Z rocks of Islesboro limestone

Ordovician - Cambrian Mount Battie Formation (Ordovician - Cambrian) at surface, covers 0.6 % of this area

Ordovician - Cambrian Mount Battie Formation

Devonian - Silurian Calderwood Formation (Devonian - Silurian) at surface, covers 0.5 % of this area

Devonian - Silurian Calderwood Formation

Ordovician - Precambrian Z Cape Elizabeth Formation, mafic to felsic volcanic member (Ordovician - Precambrian Z) at surface, covers 0.5 % of this area

Ordovician - Precambrian Z Cape Elizabeth Formation mafic to felsic volcanic member

Ordovician - Precambrian Z Ellsworth formation (Ordovician - Precambrian Z) at surface, covers 0.4 % of this area

Ordovician - Precambrian Z Ellsworth formation

Devonian - Silurian Vinalhaven Rhyolite (Devonian - Silurian) at surface, covers 0.4 % of this area

Devonian - Silurian Vinalhaven Rhyolite

Penobscot Formation, Basalt Member (Ordovician - Cambrian) at surface, covers 0.4 % of this area

Penobscot Formation, Basalt Member

Ordovician - Precambrian Z Cape Elizabeth Formation, quartzite member (Ordovician - Precambrian Z) at surface, covers 0.3 % of this area

Ordovician - Precambrian Z Cape Elizabeth Formation quartzite member

Megunticook Formation, Polymictic Conglomerate Member (Ordovician - Cambrian) at surface, covers 0.2 % of this area

Megunticook Formation, Polymictic Conglomerate Member

Devonian - Silurian Thorofare Andesite (Devonian - Silurian) at surface, covers 0.2 % of this area

Devonian - Silurian Thorofare Andesite

Ordovician unnamed mafic volcanic rocks (Ordovician) at surface, covers 0.2 % of this area

Ordovician unnamed mafic volcanic rocks

Precambrian Z Rockport Formation (Precambrian) at surface, covers 0.1 % of this area

Precambrian Z Rockport Formation

Silurian Ames Knob formation (Silurian) at surface, covers < 0.1 % of this area

Silurian Ames Knob formation

Silurian ultramafic rocks (Silurian) at surface, covers < 0.1 % of this area

Silurian ultramafic rocks

Megunticook Formation, Limestone Member (Ordovician - Cambrian) at surface, covers < 0.1 % of this area

Megunticook Formation, Limestone Member