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Mineral Resources > Online Spatial Data > Geology > by state > New York Geology

Geologic units in Monroe county, New York

Irondequoit Limestone thru Kodak Sandstone (Lower Silurian) at surface, covers 3 % of this area

Irondequoit Limestone thru Kodak Sandstone - includes: Irondequoit Limestone, Rockway Dolostone, Hickory Corners Limestone, Neahga Shale, and Kodak Sandstone.

Lithology: sandstone; shale; limestone; dolostone (dolomite); chert; phosphate

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

Skaneateles Formation - Levanna Shale, Stafford Limestone Members.

Lithology: shale; limestone; black shale

Onondaga Limestone (Middle Devonian) at surface, covers 2 % of this area

Onondaga Limestone - Seneca, Morehouse (cherty), and Nedrow Limestone Members, Edgecliff cherty Limestone Member, local bioherms.

Lithology: limestone; chert

Queenston Shale (Upper Ordovician) at surface, covers 30 % of this area

Queenston Shale

Lithology: shale

Vernon Shale (Upper Silurian) at surface, covers 12 % of this area

Vernon Shale

Lithology: shale; black shale

Camillus and Syracuse Formations (Upper Silurian) at surface, covers 0.9 % of this area

Camillus and Syracuse Formations - shale, dolostone, gypsum, salt.

Lithology: shale; dolostone (dolomite); evaporite

Camillus, Syracuse, and Vernon Formations (Upper Silurian) at surface, covers 17 % of this area

Camillus, Syracuse, and Vernon Formations - shale, dolostone, salt, and gypsum.

Lithology: shale; dolostone (dolomite); evaporite; black shale

Medina Group (Lower Silurian) at surface, covers 3 % of this area

Medina Group - consists of: Thorold Sandstone; Grimsby Formation-sandstone, shale; Power Glen and Cabot Head Shales; Whirlpool Sandstone.

Lithology: sandstone; shale

Akron Dolostone (Upper Silurian) at surface, covers 6 % of this area

Akron Dolostone - Bertie Formation-dolostone, shale.

Lithology: dolostone (dolomite); shale

Beekmantown Group (in part) (Lower Ordovician) at surface, covers 0.2 % of this area

Beekmantown Group (in part) - In St. Lawrence Valley: Ogdensburg Dolostone (Beauharnois Dolostone in Canada); In Champlain Valley: Providence Island Dolostone; Fort Cassin Formation-limestone, dolostone; Fort Ann Formation (Spellman of Clinton and Essex Counties)-limestone, dolostone; Cutting Formation-dolostone (locally cherty), limestone, siltstone. In Vermont: includes Bridport, Bascom, Cutting, and Shelburne carbonates.

Lithology: dolostone (dolomite); limestone; chert; siltstone

Decew Dolostone and Rochester Shale (Lower Silurian) at surface, covers 5 % of this area

Decew Dolostone and Rochester Shale

Lithology: shale; dolostone (dolomite); black shale; calcarenite

Onondaga and Bois Blanc Limestones (Middle Devonian) at surface, covers 0.7 % of this area

Onondaga and Bois Blanc Limestones - In New York: Onondaga Limestone-Seneca, Morehouse (cherty), and Clarence Limestone Members, Edgecliff cherty Limestone Member, local coral bioherms; Bois Blanc Limestone-sandy, thin, discontinous. In Ontario: Dundee Limestone; Lucas Formation-dolostone, limestone (Anderdon); Amherstburg Formation-limestone, dolostone, sandstone (Sylvania); Bois Blanc Formation-dolostone, limestone, sandstone (Springvale).

Lithology: limestone; sandstone; chert

Ilion Shale (Upper Silurian) at surface, covers 19 % of this area

Ilion Shale

Lithology: black shale

Marcellus Formation (Middle Devonian) at surface, covers 0.3 % of this area

Marcellus Formation - Pecksport, Solsville, Otsego, and Chittenango shale and sandstone Members, Cherry Valley Limestone, and Union Springs Shale Members.

Lithology: black shale; limestone; shale; sandstone