Answering All Your Supervolcano Questions With Dr. Shan de Silva | Deep Dive w/@planetgeopodcast

What distinguishes supervolcanoes from regular or non-super volcanoes? How many supervolcanoes are on Earth today? What are the precursors to supervolcano eruptions? In today's deep dive, Jesse, from PlanetGEO, and I we got to talk to supervolcano researcher, Dr. Shan de Silva, to answer all your supervolcano questions (and more)! 0:00 Intro to Shan 1:13 What defines a supervolcano? 2:26 Supervolcano vs super eruption 4:05 VEI vs M scale 6:02 How does Earth create supervolcanoes? 10:03 Do supervolcanoes have to be continental? 12:22 Where are supervolcanoes on Earth today? 13:20 Hot spot supervolcanoes? 14:26 Why are the Cascades not producing supervolcanoes? 15:46 Are early basaltic eruptions required? 18:42 What is the most recent supervolcano eruption? 19:34 Are super eruptions cyclic? 22:43 Do supervolcanoes tend to produce just one super eruption? 24:45 Precursor signs of a super eruption? 27:07 Visualization of a super eruption 27:30 Heterogeniety of magma & "mush" that feed supervolcanoes 31:02 How do supervolcanoes affect climate? 32:33 Mass-Extinction-causing volcanism is NOT "super" 34:52 Supervolcanoes often produce non-super eruptions 38:20 Ancient supervolcano systems 39:32 Caldera structure of supervolanoes 40:22 How to identify ancient supervolcanoes? 45:00 Could asteroid impacts cause antipodal volcanic eruptions? 47:37 Unanswered questions in supervolcano research References & resources: de Silva and Self, 2022 (Shan's 2022 paper containing table showing most recent super eruptions which was used to produce the map of supervolcanoes on Earth today) - https://doi.org/10.3389/feart.2022.85... Biondi et al., 2023 (contains figure showing schematic model of the Long Valley magmatic system interpreted from the tomographic sections) - https://doi.org/10.1126/sciadv.adi9878 Roadside Geology of Idaho book that @shawnwillsey co-wrote (contains figure showing evolution of Yellowstone magma chamber and caldera) - https://store.geosociety.org/products... Geology Underfoot in Southern Idaho book that @shawnwillsey wrote: https://store.geosociety.org/products... Check out my previous Yellowstone videos: The Geology of The Yellowstone Supervolcano & Hot Spot with @shawnwillsey -    • Geology of The Yellowstone Supervolcano & ...   Are Yellowstone’s Geysers a Warning of an Impending Volcanic Eruption? (NO) -    • Are Yellowstone’s Geysers a Warning of an ...   Yellowstone Hot Springs as Analogs for the Origin of LIfe on Earth -    • Yellowstone Hot Springs as Analogs for the...