Dive into the fascinating world of Mammoth Cave with Dr. Jesse Reimink and Chris Bolhuis in this episode of Planet Geo. From understanding the types of passageways formed by ancient underground rivers to exploring the intricate and beautiful cave decorations like stalactites, stalagmites, and flowstone, this episode provides a comprehensive and engaging look at one of the natural wonders of the world. Whether you’re preparing for a visit or just curious about subterranean geology, this in-depth discussion is sure to satisfy your curiosity.  Don't forget to check out the additional images ..read more

In this episode, Chris Bolhuis and Dr. Jesse Reimink dive into the complexities of Zircon grains from the Jack Hills conglomerate in Western Australia—some of the Earth's oldest fragments. They discuss the environmental conditions necessary for their formation and survival, the role of magma differentiation in creating intermediate to felsic rocks, and the geochemical analysis using oxygen and hafnium isotopes which indicate the presence of water on Earth's surface over 4 billion years ago. The episode also explores the scientific debates surrounding these ancient minerals and their implicatio ..read more

In this episode of Planet Geo, Chris Bolhuis and Dr. Jesse Reimink dive deep into the geology of the Grand Teton National Park. They cover the park's ancient rock formations, from the Archean gneiss to the granites formed around 2.5 billion years ago. The discussion also explores significant geological events like the Severe and Laramide orogenies, the impact of the Yellowstone Hotspot Track, and the glacial activity that sculpted the dramatic landscapes of the Tetons.  Get access to The Geology of the Grand Tetons on the CampGeo app now - link below! Download the CampGeo app now at this ..read more

We now have a live Mobile App for iOS and Android. There you can learn all the basics of geoscience with our CampGeo content, purchase a visual audiobook on the Geology of Yellowstone National Park, and listen to past PlanetGeo episodes! Download now at this link Like, Subscribe, and leave us a Rating! —————————————————— Instagram: @planetgeocast Twitter: @planetgeocast Facebook: @planetgeocast Support us: https://planetgeocast.com/support-us Email: planetgeocast@gmail.com Website: https://planetgeocast.com ..read more

We now have a live Mobile App for iOS and Android. There you can learn all the basics of geoscience with our CampGeo content, purchase a visual audiobook on the Geology of Yellowstone National Park, and listen to past PlanetGeo episodes! Download now at this link Like, Subscribe, and leave us a Rating! —————————————————— Instagram: @planetgeocast Twitter: @planetgeocast Facebook: @planetgeocast Support us: https://planetgeocast.com/support-us Email: planetgeocast@gmail.com Website: https://planetgeocast.com ..read more

This is the first episode in a series of 3 on the world's longest cave system - Mammoth Cave in Kentucky.  In this episode, Chris and Jesse talk a little about Mammoth and some of its impressive statistics.  The focus however, is more about the necessary ingredients for cave development in general.  We talk about the 4 general ingredients: suitable rock type, a solvent, hydraulic gradient, and time.  We also go into some detail on what each of these really mean.  We hope you enjoy.  In the next episode in this series, we'll talk about Mammoth specifics. We now hav ..read more

In this episode, Jesse and Chris talk about the geology of Iceland - although we keep it at a high level.  We're going to come back to this - Iceland - later after Chris returns from his trip.  Then, we'll get into some of detail that makes Iceland so unique.  Here, we discuss how Iceland might be a prototype for the formation of continents and also talk a bit about the diversity of igneous rocks that make up the Island.  The diversity of rocks speaks to the diversity of volcanic activity.  We finish up the episode with a short discussion about what Chris is most looki ..read more

Hardpan!  Where did this idea for an episode come from?  Chris has  been doing a ton of yard work lately and it’s not uncommon come across a layer when digging a hole that is next to impossible to penetrate. He has to bust out my pick axe to get through it.  It's  Called Hardpan. Really dense layer that often occurs below the topsoil.   Problems: Roots can’t penetrate into the hardpan (Hayden Valley in YNP).  Trees are easily blown over if they can even grow here. Water can’t penetrate so the soil layer above is easily saturated. Safe to say that farmers an ..read more

We now have a live Mobile App for iOS and Android. There you can learn all the basics of geoscience with our CampGeo content, purchase a visual audiobook on the Geology of Yellowstone National Park, and listen to past PlanetGeo episodes! Download now at this link Like, Subscribe, and leave us a Rating! —————————————————— Instagram: @planetgeocast Twitter: @planetgeocast Facebook: @planetgeocast Support us: https://planetgeocast.com/support-us Email: planetgeocast@gmail.com Website: https://planetgeocast.com ..read more

Today, Chris and Jesse get into a discussion about Earth’s oldest material.  Earth is 4.568 Billion years old.  First of all, that’s amazing the geochronologists have refined this down to 3 decimal places.  How do we know this?  The oldest grains ever found are 4.38 billion years old.  If that’s the case, then how do we know the Earth is significantly older than that?  Join us as we answer that and many other important questions about Earth’s oldest stuff.   We now have a live Mobile App for iOS and Android. There you can learn all the basics of geoscience w ..read more