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A Geology and Earth Science Podcast. Join Chris, an award-winning geology teacher, and Jesse, a geoscience professor, in discussing the amazing features of our planet and their impact on your everyday life. No prior knowledge required. New episodes coming at you every week. Listen, subscribe, share with someone you know!
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In this episode, we delve into the fascinating concept of hypsometry and its applications in understanding Earth's topography. We start with a light-hearted email from a listener, but quickly transition into discussing the principles of hypsometric curves. We break down how these curves provide insights into the distribution and stability of Earth's crust, oceanic and continental. Through our conversation, we explore the role of plate tectonics and erosion in shaping the Earth's surface, maki...
In this episode we engage in a lively conversation with Dr. Rachel Phillips, popularly known as GeoGirl on YouTube. Rachel shares her journey from resisting geology despite her geologist parents, to embracing it due to a chemistry class in college. She discusses her PhD research on ancient ocean chemistry and reveals her recent focus on geoscience education and communication through an NSF fellowship. With insights into her popular YouTube channel, survey findings on geoscience misconceptions...
1In this episode, we delve into the fascinating world of geological sampling. We start with a humorous discussion on episode titles and then transition into the complexities of geological sampling, including personal anecdotes about our own experiences and lessons learned. We discuss the importance of sample size, statistical models, and challenges in the field, as well as the significance of detailed documentation and the emotional connection to our rock collections. We also touch on the joy ...
In this episode of Planet Geo, we delve into the geology of the Michigan Basin, focusing on its formation, sedimentary layers, and economic significance. We discuss the concept of a self-fulfilling prophecy in basin formation, explaining how deposition and subsidence work together to create and deepen basins over time. We also highlight the unique characteristics of the Michigan Basin, including its sedimentary composition, evaporite deposits, and the role it plays in housing aquifers. Additi...
In this episode, we delve into the fascinating topic of garnet eyes, discussing how these unique geological features form and what they reveal about the history of metamorphic rocks. We explore different types of reaction rims and depletion halos, breaking down the complex processes that create these striking features. We also share personal stories and insights from our own experiences with garnet formations in places like the Tetons and Gore Mountain. Whether you're a seasoned geologist or ...
In this episode of PlanetGeo, we delve into the fascinating world of eskers, exploring their formation, significance, and economic importance. We explain how eskers, sinuous ridges formed by pressurized meltwater channels at the base of glaciers, provide crucial geological insights and serve as valuable tools in mineral exploration, such as in diamond mining. We share personal anecdotes and compelling visuals to illustrate how these unique glacial features reveal past glacial activity and hel...
Dr. Jesse Reimink and Chris Bolhuis share their firsthand experiences and insights from recent fieldwork. The episode delves into their fascinating observations and discussions about various geological features, including lava inflation structures, such as tumuli and inflation pits, the stunning landscapes shaped by fjords in Iceland, and the deposits of eskers in the Northwest Territories. They highlight the importance of careful, methodical analysis in geology and discuss how to draw conclu...
Dr. Jesse Reimink and Chris Bolhuis delve into the fascinating geological phenomenon of columnar jointing, sharing insights from Chris's recent trip to Iceland. They discuss the formation, size variations, and unique patterns of these striking hexagonal columns found in basaltic lava flows, addressing questions such as why they form, why some flows exhibit them while others don't, and the conditions that lead to different column orientations. The conversation also covers historical theories a...
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-dep...
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. T...
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 ...
Download the CampGeo app now at this link. On the app you can get tons of free content, exclusive images, and access to our Geology of National Parks series. You can also learn the basics of geology at the college level in our FREE CampGeo content series - get learning now!Like, Subscribe, and leave us a Rating!——————————————————Instagram: @planetgeocastTwitter: @planetgeocastFacebook: @planetgeocastSupport us: https://planetgeocast.com/support-usEmail: planetgeocast@gmail.comWebsite: https:/...
This episode is Part 2 of our Mammoth Cave series - where we discuss the geological setup that enabled creation of the longest cave system in the world. The geology of the region, including the Green River, set the stage for the formation of Mammoth Cave, the largest cave system that has been mapped. Stay tuned for our third installment on Mammoth Cave, where we discuss the cave 'decorations' or mineral formations. Download the CampGeo app now at this link. On the app you can g...
Download the CampGeo app now at this link. On the app you can get tons of free content, exclusive images, and access to our Geology of National Parks series. You can also learn the basics of geology at the college level in our FREE CampGeo content series - get learning now!Like, Subscribe, and leave us a Rating!——————————————————Instagram: @planetgeocastTwitter: @planetgeocastFacebook: @planetgeocastSupport us: https://planetgeocast.com/support-usEmail: planetgeocast@gmail.comWebsite: https:/...
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 h...
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 v...
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 he...
Download the CampGeo app now at this link. On the app you can get tons of free content, exclusive images, and access to our Geology of National Parks series. You can also learn the basics of geology at the college level in our FREE CampGeo content series - get learning now!Like, Subscribe, and leave us a Rating!——————————————————Instagram: @planetgeocastTwitter: @planetgeocastFacebook: @planetgeocastSupport us: https://planetgeocast.com/support-usEmail: planetgeocast@gmail.comWebsite: https:/...
Today we really go into the weeds. Jesse and a colleague just published a paper in the journal Nature that proposes a new model for how continents became stable. Stable continents have all the granite at the surface, which contains all the heat producing elements like U and Th and K - elements that decay away. Today, we discuss that paper in detail, and along the way learn a bit about the early Earth, what we know and don't know! Here is a link to the paper, which is open access and can be do...
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. ...
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Zircons—Time Capsules from the Early Earth. https://m.youtube.com/watch?v=YwbK9jkQHJM&list=PLFvjMOwDLtDB8EmA0SYY6f-hhyYPwmi3n&index=66&pp=gAQBiAQB Search for this (^^,) 'Jack Hills in Western Australia' Zircons are the oldest known materials on our planet. They offer a window in time back as far as 4.4 billion years ago, when the planet was a mere 160 million years old. Because zircons are exceptionally resistant to chemical changes, they have become the gold standard for determining the age of
"Git it, Got it, GONE"! (^^,) https://m.youtube.com/watch?v=rxtqFIUCCT0&list=PLOf4plee9UzAwmHsbygddxR--zHcY21t1&index=3&pp=iAQB Zircons are the oldest known materials on our planet. They offer a window in time back as far as 4.4 billion years ago, when the planet was a mere 160 million years old. Because zircons are exceptionally resistant to chemical changes, they have become the gold standard for determining the age of ancient rocks.
Pegmatites in The Black Hills 👍 https://m.youtube.com/watch?v=rxtqFIUCCT0&list=PLOf4plee9UzAwmHsbygddxR--zHcY21t1&index=3&pp=iAQB How to find Rare Earth Elements, Minerals and Crystals in Pegmatites.
The Great Unconformity video in Grand Canyon. https://m.youtube.com/watch?v=9DGxbhnlkwQ Enjoy your 🌎 (^^,)
Two Movies ¯\_(ツ)_/¯ ⭐1.) How the earth was made (2007-2009). https://archive.org/details/How.The.Earth.Was.Made ⭐2.) NOVA - Rise of the Mammals (2019) https://www.dailymotion.com/video/x8mn6hk Enjoy 🌎 (^^,)
Thank you for yet another great Episode. A ⭐⭐⭐⭐⭐5 star Podcast. (^^,) And with the Great Unconformity and the Vishnu Schist, in the bottom of Grand Canyon. See the video here https://m.youtube.com/watch?v=6R_NAV8Ieuo&list=PLi6K9w_UbfFRC8P7CPSWi7YEBwyM3ytOx&index=6&pp=iAQB Enjoy your Planet. (^^,)
Thanks for the very good Podcast 👍 and this episode. ⭐⭐⭐⭐⭐ See more here (^^,) https://m.youtube.com/watch?v=p_fgCumTAtE&pp=ygUGNTM2IEFE Or SEARCH. --- > "536 AD"
Great Info and great Podcast. ⭐⭐⭐⭐⭐ Ian Miller and more of this find is here ". After the Asteroid." https://m.youtube.com/watch?v=D24guLxtBvI&pp=ygUSSWFuIE1pbGxlciBnZW9sb2d5
I love this show. it is my favourite podcast of all times. Chris and Jess are so fluent in the earth sciences, and their guest sure don't fall short. Just listen to it, and you will love it too.
Great episode demonstrating the fact that plate tectonic theory is still a very young science and many questions, known and unknown, remain to be answered and posed.