Minnesota's Roadside Geology

Are you planning on driving around the state this summer? Perhaps a trip up the North Shore with a stop at Gooseberry Falls? Your enjoyment of the Arrowhead region's best-known waterfall will be enhanced when you learn that the rushing water is falling over three ancient lava flows. Learn other surprising geological facts about the state, such as why shark's teeth can be found on the Iron Range, where volcanoes were once active in the state, and how the Mississippi River was formed.

Professor emeritus of geology at UMD Richard Ojakangas will talk about Minnesota geological formations on Tuesday evening, July 19, at 6:30 p.m. Ojakangas's most recent book, Roadside Geology of Minnesota, part of the popular "Roadside Geology" series, serves as the basis for his PowerPoint slide presentation.