Dry land, then warm, shallow to deep seas Reef building formed barriers, restricted water flow: salts accumulated. Limestone, dolomite, shale, gypsum. Salt deposits under lake Erie.
Gypsum Drywall Plaster of Paris Bakery products Ocean brine
Rock Salt Snow and ice control Seasoning Water softening Ocean salt
Dry land at first, then warm shallow seas. (Deposited the Columbus & Delaware limestone.) Seas became stagnant and “anoxic”. ( Deposited the Ohio Shale.) The Ohio Shale: Huron Shale Member Chagrin Shale Member Cleveland Shale Member
Berea sandstone economically important. Black Hand sandstone Hocking Hills & Mohican Muddy to sandy seas deposited shale and sandstone. Appalachian Mts. begin to form as plates collide. Supercontinent Pangea begins to form.
Sandstone Building stone Glass Golf sand traps Furnace liners Sand
Hocking Hills State Park
Flint Ohio’s official gemstone Spearpoints Flintlock guns Volcanic ash in streams
Tropical forests and swamps. Seas level rises and falls. Appalachian Mts. continue to rise. Supercontinent Pangea complete. Marine rocks: shale, limestone, flint.
Non-marine rocks: conglomerate, sandstone, shale, clay and coal.
Coal Electric power Heating Steel production Decayed plants