Don't Panic Geocast

It's not an exact science.

About the show

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.


  • Poster Image

    Episode 303 - "But do you need it?"

    September 24th, 2021  |  56 mins 54 secs

    We finish up talking about getting data from the field and protecting your expensive instruments from the harsh outdoors!

  • Poster Image

    Episode 302 - "Geophysics is Batteries"

    September 17th, 2021  |  50 mins 12 secs

    Taking measurements in the field is hard - and this week we talk about a few ways power can fail in the field.

  • Poster Image

    Episode 301 - "Lodestone"

    September 10th, 2021  |  50 mins 45 secs

    This week John and Shannon tackle the history of magnetism and how whale songs can be used as seismic sources.

  • Poster Image

    Episode 300 - "Rock can also act as a fluid"

    September 3rd, 2021  |  1 hr 58 secs

    It's episode 300 and we're here to celebrate with you!

  • Poster Image

    Episode 299 - "Counterfeit Consciousness"

    August 20th, 2021  |  1 hr 18 mins

    This week we summarize what happened at the workshop and what happens when authors use AI to plagiarize papers.

  • Poster Image

    Episode 298 - "Little Nerd Arms"

    August 13th, 2021  |  58 mins 56 secs

    This week we talk about the wet bulb temperature and what it means for you this summer!

  • Poster Image

    Episode 297 - "Acid Gel" Shell Formation

    July 23rd, 2021  |  34 mins 2 secs

    Shannon is back from the beach and wondering how shells form, so we dig into some biological literature to learn how living animals form rock.

  • Poster Image

    Episode 296 - "Explosive Erosion"

    July 9th, 2021  |  44 mins 17 secs

    Does the earth change rapidly or slowly? We discuss the competing philosophies and the evolution of.... well, the end of the road for your food!

  • Poster Image

    Episode 295 - "Touch the rocks"

    July 2nd, 2021  |  1 hr 12 mins

    Shannon and John talk about what digital skills students have and what they need as well as what happens to a block of wood when you squeeze it.

  • Poster Image

    Episode 294 - "enormous catastrophe"

    June 18th, 2021  |  52 mins 6 secs

    How bad was that earthquake? This week we look at the confusing world of earthquake intensity scales and the future of flat pack pasta.

  • Poster Image

    Episode 293 - "Hot Hot Field Camp" Spontaneous Potential

    June 11th, 2021  |  36 mins 46 secs

    This week we talk spontaneously about spontaneous potential and what it can do for geologists.

  • Poster Image

    Episode 292 - "Magic Math Stick"

    May 28th, 2021  |  1 hr 6 mins

    This week we go off the rails and wander from field camp to working habits to Jake Staffs!

  • Poster Image

    Episode 291 - "Haven't you seen Dante's Peak?"

    May 21st, 2021  |  53 mins 15 secs

    We discuss the 41st anniversary of the Mt. St. Helen's eruption and how your BS-ability is tied to intelligence.

  • Poster Image

    Episode 290 - "COAL!"

    May 14th, 2021  |  50 mins 57 secs

    What makes coal and why do we use it? Can seismometers be used to spy on power plants? Find out in this week's show!

  • Poster Image

    Episode 289 - "Soil Teapot"

    May 1st, 2021  |  38 mins 49 secs

    This week we talk about geysers and how they work. Also could bat guano be the solution to fuel cell efficiency?

  • Poster Image

    Episode 288 - "95% Chance of Chert" Mineral Identification

    April 16th, 2021  |  50 mins 33 secs

    Inspired by a tweet, John and Shannon talk about how to identify that mystery mineral in your hand and why some of the most obvious features may not be the most accurate.