Geologic units in Van Wert county, Ohio

Lockport Dolomite (Silurian) at surface, covers 1 % of this area: Lockport Dolomite - Dolomite, shades of white to medium gray, medium to massive bedded, fine to coarse crystalline; fossiliferous; vuggy.
Lithology: dolostone (dolomite)
Wabash Formation (Silurian) at surface, covers < 0.1 % of this area: Wabash Formation - Limestone, dolomite, and argillaceous dolomite
Lithology: limestone; dolostone (dolomite)
Salina Group (Silurian) at surface, covers 84 % of this area: Salina Group - Dolomite, gray, yellow-gray to olive-gray, laminated to thin bedded; occasional thin bed and laminae of dark gray shale and anhydrite and/or gypsum; brecciated zones in part.
Lithology: dolostone (dolomite); shale; evaporite
Pleasant Mills Formation (Silurian) at surface, covers < 0.1 % of this area: Pleasant Mills Formation - Dolomite, limestone, and argillaceous dolomite
Lithology: dolostone (dolomite); limestone
Tymochtee and Greenfield Formations, Undivided (Silurian) at surface, covers 15 % of this area: Tymochtee and Greenfield Formations, Undivided - Dolomite, olive-gray to yellowish- brown, thin to massive bedded, upper two-thirds commonly contains brownish-black to gray shale laminae; locally developed brecciated zones in lower one third.
Lithology: dolostone (dolomite); shale