Late quaternary temporal and event classifications, Great Lakes region, North America

Johnson, W. H.; Hansel, A. K.; Bettis, III, E. A.; Karrow, P. F.; Larson, G. J.; Lowell, T. V.; Schneider, A. F.

Abstract:

Several temporal and event classifications are used for the Quaternary glacial and interglacial record in the Great Lakes region of North America. Although based on contrasting principles, the classifications, as practiced, are similar to one another in most respects and they differ little from the classification proposed by Chamberlin a century ago. All are based on stratigraphic units having time-transgressive boundaries; thus the associated time spans and events are diachronous. Where application of geochronologic classification based on isochronous boundaries is not practical or useful, we advocate the use of diachronic principles to establish local and regional temporal and event classifications. Diachronic and event classifications based on such principles are proposed herein for the Great Lakes region. Well-established names, including Wisconsin, Sangamon, and Illinois, are used at the episode (or glaciation/interglaciation) rank without significant redefinition. The Hudson Episode (Interglaciation) is introduced for postglacial time, the current interglacial interval. The Wisconsin Episode is divided into the Ontario, Elgin, and Michigan Subepisodes in the eastern and northern parts of the Great Lakes region and into the Athens and Michigan Subepisodes in the southern and western parts of the Great Lakes region. ?? 1997 University of Washington.

Genre:

Article

ProdID:

70020083

Citation Author:

Johnson, W. H.; Hansel, A. K.; Bettis, III, E. A.; Karrow, P. F.; Larson, G. J.; Lowell, T. V.; Schneider, A. F.

Citation Contributing Office:

Citation Datum:

Citation Day:

Citation Edition:

Citation Editor:

Citation End Page:

Citation Issue:

Citation Keywords:

Citation Language:

English

Citation Larger Work Title:

Quaternary Research

Citation LatN:

Citation LatS:

Citation LonE:

Citation LonW:

Citation Month:

Citation No Pagination:

Citation Number Of Pages:

Citation Online Only Flag:

Citation Phsyical Description:

Citation Projection:

Citation Public Comments:

Citation Publisher:

Elsevier

Citation Series:

Citation Series Code:

Citation Series Number:

Citation Search Results Text:

Late quaternary temporal and event classifications, Great Lakes region, North America; 1997; Article; Journal; Quaternary Research; Johnson, W. H.; Hansel, A. K.; Bettis, III, E. A.; Karrow, P. F.; Larson, G. J.; Lowell, T. V.; Schneider, A. F.