Only in the world of Co2 FRAUD McBULLSHIT is there an instantaneous covering of a continent with ice. In reality, the speed is GLACIAL, and it likely took a full million years once North American Ice Age started 30-50 million years ago for that ice to reach Chicago. Once it reached Chicago, it took 20+ million years to get over 2 miles high.
Don't have sophisticated graphics. The arc of tectonic motion and the vector of the fault are already posted. The top of North America looked quite different 50 million years ago, before being scraped out by glaciers for tens of millions of years. One artist did this, but it has NA and Greenland attached, which wasn't the case since NA was buried under glacier 2 million years ago and Greenland was completely green.