STATE OF OHIO
Bob Taft, Governor
DEPARTMENT OF NATURAL RESOURCES
Samuel W. Speck, Director
DIVISION OF GEOLOGICAL SURVEY
Thomas M. Berg, Chief
GLACIAL MAP OF OHIO
ASHTABULA
WILLIAMS
FULTON
LUCAS
GEAUGA
LAKE
OTTAWA
WOOD
TRUMBULL
HENRY
CUYAHOGA
SANDUSKY
DEFIANCE
ERIE
LORAIN
PORTAGE
HURON
PAULDING
MEDINA
SENECA
PUTNAM
SUMMIT
HANCOCK
MAHONING
VAN WERT
WYANDOT
CRAWFORD
RICHLAND
ASHLAND
WAYNE
STARK
ALLEN
COLUMBIANA
HARDIN
MERCER
CARROLL
MARION
AUGLAIZE
HOLMES
MORROW
TUSCARAWAS
LOGAN
SHELBY
KNOX
JEFFERSON
UNION
COSHOCTON
HARRISON
DELAWARE
DARKE
LICKING
CHAMPAIGN
GUERNSEY
MIAMI
BELMONT
MUSKINGUM
FRANKLIN
MADISON
CLARK
PREBLE
FAIRFIELD
NOBLE
PERRY
MONTGOMERY
MONROE
GREENE
PICKAWAY
MORGAN
FAYETTE
HOCKING
BUTLER
WARREN
WASHINGTON
CLINTON
ROSS
ATHENS
VINTON
HIGHLAND
HAMILTON
CLERMONT
MEIGS
PIKE
JACKSON
BROWN
N
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
End moraine
Hummocky moraine
Peat
Colluvium