John Craddock – Geology of the End of the Trail: Tonalites, Diamictites, Seismites and Tillites”
Chik-Wauk Museum & Nature Center 28 Moose Pond Drive, Grand Marais, MN, United StatesJohn will share the geologic history of the area located around the end of the trail, from 2.6 billion year old Archean granites to the Pleistocene glacial epoch (Magnetic Rock). John is a Minnesota native, he taught at Macalester College for 32 years, traveled the world researching geology, and has now retired to the […]