Lockport Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Silurian
 ....Middle Silurian
 .....Niagaran
 ......Lockport Formation
RTOntario
 Kentucky
 Ohio
 Pennsylvania
 New York
 West Virginia
 Michigan
SNIncludes Gasport Dolomite, Suspension Bridge Dolomite and Eramosa Dolomite members at Niagara Gorge. In New York, includes DeCew Waterlime, Gasport Limestone, Goat Island, Oak Orchard members, Devils Hole Dolomite, and Oakfield Limestone.