TABLE OF CONTENTS Historical background and acknowledgments Bedrock geology and its control of preglacial topography Modification of topography by glacial erosion Modification of topography by glacial deposition General distribution of glacial deposits Post-Valders lake stages in the Lake Superior basin Abandoned shorelines on Isle Royale Significance of ice-margin deposits on Isle Royale ILLUSTRATIONS PLATE 1. Map showing glacial features and abandoned shorelines, Isle Royale National Park, Keweenaw County, Michigan (omitted from the online edition)
1. Map of the Lake Superior region 2. Map of Wisconsin ice retreat from central North America 3. Shaded-relief map of Isle Royale National Park 4. Sketch of the relation between ridge-and-valley topography and tilted lava flows and sedimentary rocks 58. Photographs of:
9. Stereoscopic pair showing drumlins, ice-margin deposits, and abandoned shorelines west of Siskiwit Bay 10. Map of glacial Lake Duluth and contemporary ice border 11. Diagram of water-level change and suggested intervals of ice retreat for the Lake Superior basin 12. Map of glacial Lake Minong and contemporary North Shore ice border 13. Diagram of chronology of lake-level changes in the Lake Superior basin 14. Diagram of profiles showing former water planes in northwestern Lake Superior basin 15. Diagram of profile across barrier-bar beaches between Rainbow Cove and Feldtmann Lake 16. Sketch of wave-cut shoreline illustrating development of stacks and arches 17. Photograph of Monument Rock, a stack associated with the shoreline of glacial Lake Minong 18. Photograph of wave-cut arch on Amygdaloid Island 19. Map of hypothetical position of glacial ice margin prior to complete retreat of ice from Isle Royale
pp/754a/contents.htm Last Updated: 01-Mar-2005 |