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Don't Panic Geocast

Don't Panic Geocast

By: John Leeman and Shannon Dulin
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About this listen

 John Leeman and Shannon Dulin discuss geoscience and technology weekly for your enjoyment! Features include guests, fun paper Friday selections, product reviews, and banter about recent developments. Shannon is a field geologist who tolerates technology and John is a self-proclaimed nerd that tolerates geologists.© 2025 Don't Panic Geocast Nature & Ecology Science
Episodes
  • Episode 420 - "Tourist Destination" Kamchatka Earthquake

    Episode 420 - "Tourist Destination" Kamchatka Earthquake
    Sep 6 2025
    This week we are back and discussing the recent large earthquake in Russia! Fun Paper Friday Is that viral video of a fault rupture form a security camera real? This paper checks it out. Kearse, Jesse, and Yoshihiro Kaneko. "Curved Fault Slip Captured by CCTV Video During the 2025 M w 7.7 Myanmar Earthquake." The Seismic Record 5.3 (2025): 281-288. (https://pubs.geoscienceworld.org/ssa/tsr/article/5/3/281/659624/Curved-Fault-Slip-Captured-by-CCTV-Video-During) Contact us: Show Support us on Patreon! (https://www.patreon.com/dontpanicgeo) www.dontpanicgeocast.com (http://www.dontpanicgeocast.com) @dontpanicgeo (https://twitter.com/dontpanicgeo) dontpanicgeocast@gmail.com John Leeman - www.johnrleeman.com (http://www.johnrleeman.com) - @geo_leeman (https://twitter.com/geo_leeman) Shannon Dulin - @ShannonDulin (https://twitter.com/ShannonDulin)
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    46 mins
  • Episode 419 - "Diamonds Everywhere" A States

    Episode 419 - "Diamonds Everywhere" A States
    Aug 8 2025
    We're hitting the open road — geologically speaking. This episode kicks off our new state-by-state series covering the most fascinating, scenic, or just plain weird geologic stops in the U.S. We’re going alphabetically (because of course we are), starting with Alabama, Alaska, and Arkansas. Some sites we've visited, others are firmly on our dream list, but every pick is guaranteed to bring a bit of science to your next adventure. Alabama Cheaha Mountain Cathedral Caverns Alaska Wrangell-St. Elias National Park Mendenhall Glacier Arkansas Crater of Diamonds State Park Blanchard Springs Caverns Fun Paper Friday Frost, Mungo, et al. "Diamond precipitation dynamics from hydrocarbons at icy planet interior conditions." Nature astronomy 8.2 (2024): 174-181. (https://www.osti.gov/servlets/purl/2324804) Contact us: Show Support us on Patreon! (https://www.patreon.com/dontpanicgeo) www.dontpanicgeocast.com (http://www.dontpanicgeocast.com) @dontpanicgeo (https://twitter.com/dontpanicgeo) dontpanicgeocast@gmail.com John Leeman - www.johnrleeman.com (http://www.johnrleeman.com) - @geo_leeman (https://twitter.com/geo_leeman) Shannon Dulin - @ShannonDulin (https://twitter.com/ShannonDulin)
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    48 mins
  • Episode 418 - "I like the crystal habit"

    Episode 418 - "I like the crystal habit"
    Aug 1 2025
    What makes a mineral a favorite? In this fun and down-to-earth episode, John and Shannon swap stories about the minerals they love most — and why. Along the way, they unpack cool crystal habits, formation environments, fieldwork memories, and the aesthetic appeal of minerals from museum specimens to muddy boots. Shannon shares her appreciation for: Hematite – With its metallic luster and planetary significance. Goethite – A subtle but important iron oxide-hydroxide. Smithsonite – Beautiful colors and a fascinating history in ore geology. John counters with: Ulexite – “TV rock,” with fiber-optic properties that never fail to wow. Uraninite – A dense, radioactive reminder of geologic power and energy. Tourmaline – A colorful, complex favorite of mineral collectors and scientists alike. Fun Paper Friday James, C. W., et al. "A nanosecond-duration radio pulse originating from the defunct Relay 2 satellite." The Astrophysical Journal Letters 987.1 (2025): L16. (https://iopscience.iop.org/article/10.3847/2041-8213/ade3d3/pdf) Contact us: Show Support us on Patreon! (https://www.patreon.com/dontpanicgeo) www.dontpanicgeocast.com (http://www.dontpanicgeocast.com) @dontpanicgeo (https://twitter.com/dontpanicgeo) dontpanicgeocast@gmail.com John Leeman - www.johnrleeman.com (http://www.johnrleeman.com) - @geo_leeman (https://twitter.com/geo_leeman) Shannon Dulin - @ShannonDulin (https://twitter.com/ShannonDulin)
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    51 mins
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