

Don't Panic Geocast
John Leeman and Shannon Dulin
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.
Episodes
Mentioned books

May 31, 2019 • 36min
Episode 211 - "Rock Colloid"
Is it a nodule, is it a concretion, it is rock lightning? Find out on this week's summer short! Concretion Nodule Fun Paper Friday Is there carbon from outside this world? Extraterrestrial Organic Matter Found in 3.3-Billion-Year-Old Volcanic Rock Contact us: Show Support us on Patreon! www.dontpanicgeocast.com SWUNG Slack @dontpanicgeo show@dontpanicgeocast.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin

May 24, 2019 • 40min
Episode 210 - "Capital M Muddy"
This week we talk about the Dakota group and how it formed those beautiful hogback structures we all love! Dakota Formation Hogback Western Interior Seaway Fun Paper Friday Can dead fish really see emotion in humans? fMRI Gets Slap in the Face with a Dead Fish Contact us: Show Support us on Patreon! www.dontpanicgeocast.com SWUNG Slack @dontpanicgeo show@dontpanicgeocast.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin

Apr 27, 2019 • 1h 7min
Episode 209 - "Sand that does math"
This week we continue our instrument journey and talk about controlling the physical world with tiny electrons! Fun Paper Friday Can the music you listen to change your reaction to violence? Sun, Yanan, et al. "Implicit violent imagery processing among fans and non-fans of music with violent themes." Royal Society Open Science 6.3 (2019): 181580. Contact us: Show Support us on Patreon! www.dontpanicgeocast.com SWUNG Slack @dontpanicgeo show@dontpanicgeocast.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin

Apr 19, 2019 • 1h 8min
Episode 208 - "It's all just voltage"
This week we explore how does your data go from a physical thing to a digital representation. Transducer ADC Fun Paper Friday Security is a scary topic, but we might be looking at the wrong problems! Mickens, J., 2014. This World of Ours. USENIX. Contact us: Show Support us on Patreon! www.dontpanicgeocast.com SWUNG Slack @dontpanicgeo show@dontpanicgeocast.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin

Apr 12, 2019 • 42min
Episode 207 - "Baby little crystal faces"
This week it’s all about microscopic indications of impacts and some fun mineral names. We wrap up with a fun paper on making project acronyms! Coesite Stishovite Planar Deformation Features Fun Paper Friday Cook, B.A., ACRONYM: Acronym CReatiON for You and Me Contact us: Show Support us on Patreon! www.dontpanicgeocast.com SWUNG Slack @dontpanicgeo show@dontpanicgeocast.com John Leeman - www.johnrleeman.com - @geo_leeman Shannon Dulin - @ShannonDulin

Mar 29, 2019 • 59min
Episode 206 - "The saddest of the breccias"
This week we continue to chat about impact events and the macroscopic evidence of them. We wrap up with a chat about primate sleep patterns. Shatter Cones Breccia Suevite Pseudotachylite Fun Paper Friday Did our sleep patterns help us grow our cognitive ability? Find out on this week's Fun Paper Friday! NYTimes Interview Samson, David R., and Charles L. Nunn. "Sleep intensity and the evolution of human cognition." Evolutionary Anthropology: Issues, News, and Reviews 24.6 (2015): 225-237. Contact us: Show Support us on Patreon! www.dontpanicgeocast.com SWUNG Slack @dontpanicgeo show@dontpanicgeocast.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin

Mar 25, 2019 • 54min
Episode 205 - "Mellon Baller to the Surface"
This week we start a series on impact crates and how to tell if you have one - turns out it’s a lot more complicated than you’d think! We’ll wrap up the show with an analysis of pocket sizes on men’s and women’s clothing. Earth Impact Database Vredefort Crater Fun Paper Friday Diem and Thomas (2018) Someone clever once said Women were not allowed pockets Contact us: Show Support us on Patreon! www.dontpanicgeocast.com SWUNG Slack @dontpanicgeo show@dontpanicgeocast.com John Leeman - www.johnrleeman.com - @geo_leeman Shannon Dulin - @ShannonDulin

Mar 15, 2019 • 50min
Episode 204 - "Take the blue pill"
This week we’re petrified.. petrified wood that is. Learn what it is and how it’s made - then we tie it all up with a fun paper about mathematical ways to tie neckties. AVE Clear Wood Wiki Petrified Wood Petrified Forest Fun Paper Friday How many ways are there to tie a necktie? Find out in this week’s fun paper! Fink, Thomas M., and Yong Mao. “Designing tie knots by random walks.” Nature 398.6722 (1999): 31.

Mar 8, 2019 • 1h 1min
Episode 203 - "Evian of Light"
This week we wrap up talking about magnetometers with the alkali vapor magnetometer - a strange optical instrument that is incredibly precise! Fun Paper Friday Why do grapes turn into balls of plasma in a microwave. New research tells us and hints towards advanced manufacturing techniques. Khattak, Hamza K., Pablo Bianucci, and Aaron D. Slepkov. "Linking plasma formation in grapes to microwave resonances of aqueous dimers." Proceedings of the National Academy of Sciences (2019): 201818350. Contact us: Show Support us on Patreon! www.dontpanicgeocast.com SWUNG Slack @dontpanicgeo show@dontpanicgeocast.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin

Mar 1, 2019 • 48min
Episode 202 - "Little Tiny Bar Magnets"
This week it is all about the proton procession magnetometer and the Earth's underground mountain range. Don't miss it! Proton Magnetometer Fun Paper Friday phys.org article Wu, Wenbo, Sidao Ni, and Jessica CE Irving. "Inferring Earth’s discontinuous chemical layering from the 660-kilometer boundary topography." Science 363.6428 (2019): 736-740. Contact us: Show Support us on Patreon! www.dontpanicgeocast.com SWUNG Slack @dontpanicgeo show@dontpanicgeocast.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin