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.


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    Episode 379 - "How would you like to buy Brunton?"

    February 23rd, 2024  |  1 hr 12 mins

    This week we're rejoined by the Heerschaps to learn about how they came to own and run Brunton and what's next for the company that is a staple of the geological, recreational, and military navigation world.

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    Episode 378 - "I love the font"

    February 16th, 2024  |  42 mins 6 secs

    We generally don't think of sedimentary rocks when we think of volcanoes, but they are real! Find out why sedimentologists don't have to be bored in volcanic terranes.

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    Episode 377 - "Definitely Panic - Another Oklahoma Earthquake"

    February 9th, 2024  |  49 mins 10 secs

    Oklahoma was rocked by another relatively large earthquake for a mid-continent region. We break it down, compare it to the 2011 earthquake and then talk about the hairy ball theorem.

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    Episode 376 - "Got to get those pizza ovens hot"

    February 2nd, 2024  |  54 mins 25 secs

    This week we tackle the controversial topic of fracking. Learn about how it works and what it does to help get oil and gas out of the ground and into your home.

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    Episode 375 - "Squeeze it shut"

    January 26th, 2024  |  54 mins 2 secs

    This week we keep talking about wells. It's all about casing, cementing, bottom hole assemblies, and wet underwear.

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    Episode 374 - "Until you Lick It"

    January 19th, 2024  |  1 hr 5 mins

    How do you drill a hole in the ground? Turns out that drilling wells is more complicated than you might think!

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    Episode 373 - "Tastes like Animal Crackers"

    January 12th, 2024  |  1 hr 2 mins

    This week we range over several topics on our minds while testing out english biscuits per a fun paper a few weeks ago. Also - do cats understand you but just don't care?

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    Episode 372 - "The Rumors of My Death" 2024 Resolutions

    January 5th, 2024  |  1 hr 13 mins

    We're back for the 2024 season after our first ever sabbatical and we're ready to talk science, resolutions, and barbie.

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    Episode 371 - "Have you tried licking it?"

    September 15th, 2023  |  39 mins 51 secs

    This week we talk about mudrock - which sounds pretty self explanatory, but of course geologists have made a complex classification scheme around it. Also we delve into if you should "sleep on it" when making big decisions.

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    Episode 370 - "Siliceous Ooze"

    September 8th, 2023  |  48 mins 35 secs

    We said if you just pick up a rock, it is probably chert. How does this pervasive rock form? I mean we should have a good idea, right?

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    Episode 369 - "Collect data in the field, do science at home"

    August 25th, 2023  |  54 mins 3 secs

    It takes a lot to plan field work, no matter if it is a day rock hounding or a week in the deep field. This week we talk about what you need to know!

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    Episode 368 - "It is Chert"

    August 18th, 2023  |  52 mins 56 secs

    You walk outside and find a rock - what is it? Well, that's probably a difficult answer. Also, how round are electrons and how do you even measure that?

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    Episode 367 - "Summer Break"

    August 4th, 2023  |  54 mins 29 secs

    This summer was anything but a break - in fact Shannon and John were travelling most of the time! But it is time for back to school so we'll gather up what you need to bring to class.

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    Episode 366 - "I Didn't Blow Away"

    June 23rd, 2023  |  52 mins 5 secs

    This summer while Shannon has been at field camp we took a short hiatus, but we're back! Find out what happened with camp and more as well as what happens when you drop a spinning bottle of water.

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    Episode 365 - Salinity Crisis "Smoking Various Meats and WWII"

    June 9th, 2023  |  39 mins 15 secs

    This week we talk about the Messinian Salinity Crisis and if your mom was right about cracking your knuckles.

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    Episode 364 - Geology of War "I'm glad I listen to this podcast"

    May 12th, 2023  |  55 mins 43 secs

    Join us as we explore how the intricate interplay between geology and military strategy has shaped history. We unravel the secrets behind the terrain's influence on battles, from its impact on troop movements to the potential for fortifications and natural defenses. Additionally, we investigate an intriguing question: What type of rock is the deadliest? We are astonished by the unexpected ways in which geology has played a pivotal role in shaping the destiny of nations in times of war.