STATE OF OHIO
Ted Strickland, Governor
DEPARTMENT OF NATURAL RESOURCES
Sean D. Logan, Director
DIVISION OF GEOLOGICAL SURVEY
Lawrence H. Wickstrom, Chief
GLACIAL MAP OF OHIO
WILLIAMS
FULTON
ASHTABULA
LUCAS
GEAUGA
LAKE
OTTAWA
WOOD
HENRY
TRUMBULL
CUYAHOGA
SANDUSKY
DEFIANCE
ERIE
LORAIN
PORTAGE
PAULDING
HURON
SENECA
PUTNAM
MEDINA
SUMMIT
HANCOCK
MAHONING
VAN WERT
WYANDOT
CRAWFORD
RICHLAND
ASHLAND
WAYNE
STARK
ALLEN
COLUMBIANA
HARDIN
MERCER
CARROLL
MARION
AUGLAIZE
HOLMES
MORROW
LOGAN
SHELBY
TUSCARAWAS
KNOX
UNION
JEFFERSON
COSHOCTON
DELAWARE
HARRISON
DARKE
LICKING
CHAMPAIGN
GUERNSEY
MIAMI
FRANKLIN
MADISON
BELMONT
MUSKINGUM
CLARK
PREBLE
FAIRFIELD
MONTGOMERY
GREENE
NOBLE
PERRY
MONROE
PICKAWAY
MORGAN
FAYETTE
BUTLER
HAMILTON
WARREN
HOCKING
CLINTON
ROSS
ATHENS
VINTON
HIGHLAND
CLERMONT
MEIGS
PIKE
BROWN
WASHINGTON
JACKSON
GALLIA
ADAMS
SCIOTO
0
LAWRENCE
WISCONSINAN
(14,000 to 24,000 years old)
ILLINOIAN
(130,000 to 300,000 years old)
0
PRE-ILLINOIAN
(older than 300,000 years)
10
20
30
40 miles
10 20 30 40 50 kilometers
Kames and eskers
Ground moraine
Ground moraine
Ground moraine
Outwash
Wave-planed
ground moraine
Dissected
ground moraine
Dissected
ground moraine
Lake deposits
Ridge moraine
Hummocky moraine
Peat
Colluvium