Lake Superior owes its spectacular shoreline (and the
mineral deposits that drove the area’s economic growth) to an immense
mid-continental rift system that threatened to split North America over a
billion years ago. Learn about the planet-shaping science behind the scenery in this slide lecture by Glencoe geologists Carol and Seth Stein.
Stein is a professor in the Department of Earth and Environmental Studies at the University of Illinois at Chicago. Dr. Seth
Stein is the William Deering Professor and Institute for Policy Studies Associate with the Department of Earth and Planetary Sciences at Northwestern University.