Glacial Eolian Sand Sheets with sand stringers
Glacial boulders and till
Eramosa (formerly Oak Orchard Formation): (or Dolomite): A buff to dark grey, massive, bituminous dolomitic limestone. CAPROCK!
Goat Island Formation: (or Dolomite): A massive, sugary dolomitic limestone.
Gasport Formation: (or Limestone): A rich, fossiliferous, biohermal limestone and dolomite.