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Reevaluation of early Wisconsinan stratigraphy of northern Ohio

John P. Szabo
Reevaluation of early Wisconsinan stratigraphy of northern Ohio (in The last interglacial-glacial transition in North America, Peter U. Clark (editor) and Peter D. Lea (editor))
Special Paper - Geological Society of America (1992) 270: 99-107


Three sections critical to the interpretation of upper Pleistocene deposits in northern Ohio are the Titusville, Pennsylvania, site and the Garfield Heights and Mt. Gilead sites in Ohio. At Titusville, Pennsylvania, the relation of peat dated at about 40,000 yr B.P. to the Titusville till is unclear. The interpretation of early Wisconsinan glaciation at Garfield Heights, Ohio, has been based on the Garfield Heights till and a subsequently derived accretion gley, both of which overlie a truncated paleosol (Sangamonian soil?) and two formerly exposed weathered tills. Current interpretation assigns the Garfield Heights till to the Illinoian. Previous interpretations for a middle or early Wisconsinan age of the Millbrook till of north-central Ohio have been placed in question by thermoluminescence ages of 146 + or - 25 ka and 124 + or - 16 ka on overlying loess at Mt. Gilead, Ohio. Much of what has been called Millbrook till has been traced to areas previously mapped as Illinoian. Thus, there is no evidence to support early to middle Wisconsinan glaciation in northern Ohio and adjacent northwestern Pennsylvania. During the early to middle Wisconsinan, landscapes in Ohio may have been geomorphically unstable, and deposits from this time may be in buried valleys or may have been eroded by late Wisconsinan glaciers.

ISSN: 0072-1077
EISSN: 2331-219X
Serial Title: Special Paper - Geological Society of America
Serial Volume: 270
Title: Reevaluation of early Wisconsinan stratigraphy of northern Ohio
Title: The last interglacial-glacial transition in North America
Author(s): Szabo, John P.
Author(s): Clark, Peter U.editor
Author(s): Lea, Peter D.editor
Affiliation: University of Akron, Department of Geology, Akron, OH, United States
Affiliation: Oregon State University, Department of Geosciences, Corvallis, OR, United States
Pages: 99-107
Published: 1992
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
ISBN: 0813722705
References: 39
Accession Number: 1993-006643
Categories: Quaternary geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: 3 tables, sects., sketch map
N38°25'00" - N42°00'00", W84°49'60" - W80°31'60"
N39°43'00" - N42°17'60", W80°31'60" - W74°40'00"
Secondary Affiliation: Bowdoin College, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 1993
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