55: The Oldest Rock in the USA

Season 2 Finale! For 50 years, the title of "USA's Oldest Rock" was held on the prairies of western Minnesota. In 2025, that throne was usurped by a brand new study. Where is this "new" ancient location, what rocks are here, and how old are they? Stay tuned to find out! Dylan has an exciting announcement: he has a new visiting professor job at Gustavus Adolphus College in Minnesota! Thanks to everyone for their support. Speaking of which, if you want to donate: Monthly donations on Patreon One-off donations on Paypal