Skip to Main Content
Book Chapter

Pre-and-early Agassiz outlets to the western Superior Basin

By
J. Frederick Dean
J. Frederick Dean
Research Technician, RR#5 Rosslyn Road, Thunder Bay, Ontario P7C 5M9, Canada
Search for other works by this author on:
;
Brian A.M. Phillips
Brian A.M. Phillips
Professor Emeritus, Lakehead University, Thunder Bay, Ontario P7B 5E1, Canada
Search for other works by this author on:
Published:
January 01, 2011

ABSTRACT

The deglaciation history of northeastern Minnesota and northwestern Ontario is outlined using geological and ichthyofaunal evidence from the continental to local scales. Both published and new data indicate the existence of eastern outlets drawing from pre-and-early Agassiz lakes. Part of the Arctic watershed was impounded between the Duluth Complex highlands and the retreating Rainy lobe. These outlets had their flows routed through the “Keating Complex” and the “Gunflint Arrow Lakes Corridor.” Discharges around the Duluth Complex’s northeast limb reached the Superior basin along Superior lobe ice, then exited down existing pre-glacial river valleys and a prominent, “valley-type” topographic bench between Hovland and Grand Marais, Minnesota.

You do not currently have access to this article.

Figures & Tables

Contents

GSA Field Guide

Archean to Anthropocene: Field Guides to the Geology of the Mid-Continent of North America

James D. Miller
James D. Miller
Department of Geological Sciences and Precambrian Research Center University of Minnesota-Duluth Duluth, Minnesota 55812 USA
Search for other works by this author on:
;
George J. Hudak
George J. Hudak
Precambrian Research Center Natural Resources Research Institute 5013 Miller Trunk Highway Duluth, Minnesota 55811 USA
Search for other works by this author on:
;
Chad Wittkop
Chad Wittkop
Department of Chemistry and Geology Minnesota State University Mankato, Minnesota 56001 USA
Search for other works by this author on:
;
Patrick I. McLaughlin
Patrick I. McLaughlin
Wisconsin Geological and Natural History Survey Madison, Wisconsin 53705 USA
Search for other works by this author on:
Geological Society of America
Volume
24
ISBN electronic:
9780813756240
Publication date:
January 01, 2011

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal