Late Wisconsin periglacial environments of the southern margin of the Laurentide Ice Sheet reconstructed from pollen analyses

Abstract Full‐glacial pollen assemblages from four radiocarbon‐dated interstadial deposits in southwestern Ohio and southeastern Indiana imply the presence of herbaceous vegetation (tundra or muskeg with subarctic indicator Selaginella selaginoides ) on the southern margin of the Miami lobe of the L...

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Bibliographic Details
Published in:Journal of Quaternary Science
Main Authors: Heusser, Linda, Maenza‐Gmelch, Terryanne, Lowell, Thomas, Hinnefeld, Rebecca
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2002
Subjects:
Ice Sheet
Subarctic
Tundra
Online Access:http://dx.doi.org/10.1002/jqs.688
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.688
https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.688
Description
Summary:Abstract Full‐glacial pollen assemblages from four radiocarbon‐dated interstadial deposits in southwestern Ohio and southeastern Indiana imply the presence of herbaceous vegetation (tundra or muskeg with subarctic indicator Selaginella selaginoides ) on the southern margin of the Miami lobe of the Laurentide Ice Sheet ca. 20 000 14 C yr BP. Scattered Picea (spruce) and possibly Pinus (pine) may have developed regionally ca. 19 000 14 C yr BP, and ca. 18 000 14 C yr BP, respectively. Spruce stumps in growth position support a local source of pollen. Prior to the ca. 14 000 14 C yr BP glacial advance, small amounts of Quercus (oak) and other deciduous pollen suggest development of regional boreal (conifer–hardwood) forests. Copyright © 2002 John Wiley & Sons, Ltd.

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