Summary Subduction zones don't carry passports, and the Cascade Volcanic Arc doesn't stop at the U.S.-Canada border. In this episode, Dr. Jeffrey Zurek (P.Geo) welcomes his mentor Dr. Glyn Williams-Jones (Simon Fraser University) to discuss Canada’s most dangerous volcano: Mount Meager.

We dig into the "detective story" of Meager’s last explosive eruption 2,400 years ago—an event that sent ash to Calgary and created a 110-meter-high volcanic dam. We explore the physics of block and ash flows, the "unzipping" of prehistoric dams leading to Jökulhlaups (outburst floods), and the current monitoring gaps on this restless massif. From InSAR satellite radar to the risk of "pulling the cork" on a  ...