PlanetGeo: The Geology Podcast
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!
Magnetic Sand and Other Listener Questions
Join Chris and Jesse as they dive deep into your rock-solid questions! From magnetic sands on Lake Michigan's dunes to the ancient mysteries of plate tectonics, nowhere on Earth (or beyond) is safe from their geological curiosity. Ever wondered who names minerals or how to remember those complicated mineral formula? Tune in to this special listener Q&A episode to unearth some epic answers! Plus, find out what really rocks Dr. Reimink's boat. Don't miss it!
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Sasquatch Eruptions
Join us for a rockin' episode where we dive into the explosive world of Yellowstone’s hydrothermal activity! Chris and Jesse chat about the intriguing 'Sasquatch eruptions'—no, not Bigfoot, but sudden hydrothermal explosions that have scientists buzzing. From close encounters with geysers to the epic history behind Black Diamond Pool, we break down the steamy details. We even touch on the purported stories of animals 'fleeing' the park and what it really means. Plus, citizen scientists play a key role in capturing these rare geothermal events. Top it off with humorous anecdotes and you'll erupt with excitement! Don't miss...
Landslides and Lidar - Dr. Phillip Prince @Geomodels
Get ready to dig deep into geology with the one and only Dr. Philip Prince! Join su as we rock out with discussions on the game-changing one-meter resolution lidar, geomorphology, landslides, and the captivating landscapes of the Appalachians. Learn about Philip's aha moments in geology, his journey from a trout fishing enthusiast to a top-notch geomorphologist, and the incredible insights revealed by lidar technology. Plus, discover some fascinating lesser-known geological mysteries - all served with a side of geology puns. Tune in and let's get ready to explore the Earth's secrets, one layer at a time!
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Silent Sculptors - The Stones Shaping Gettysburg's Battlefield
In this exciting episode of our series on Gettysburg's geology, we dive deep into the Gettysburg Basin to uncover how the rocks beneath the famous battlefield shaped the events of history. From the famous McPherson's Ridge to the subtle hills that played crucial roles, discover how changes in rock types have left their mark. Join us as we zoom in on sedimentary rocks, explore the reddish Gettysburg Formation, the Heidelsburg member, and reveal some truly fossil-iferous finds. Rock on with us as we take a look at how geology played its part in one of the most famous battles...
America's Oldest Rocks - Part 2 - The Unveil
In this episode, we dive back into the bedrock of America to reveal which state holds the crown for the oldest rocks in the U.S.! Join us as we unravel the mysteries of ancient metamorphic formations. From the Morton Gneisses in Minnesota, to the Wyoming craton out West, and ending in Upper Michigan, you'll find out what the oldest rocks are, and how we know! Hit that subscribe button, because this episode rocks!Â
The paper that served as the basis for this episode is Frost, C.D., Mueller, P.A., Bickford, M.E., and Stern, R.J...
Rift, Rock, and Revolution - The Beginnings of the Gettysburg Basin
Join us as we explore the towering history of ancient mountain ranges, delve into the mysteries of the Appalachian Mountains, and break down the geological story behind the Gettysburg region. From the immense rift basins on the East Coast to the intricate details of the Allegheny Orogeny, this episode promises a thrilling ride through Earth's dynamic layers. Get ready to rock with some punny sediment tales and discover how past geological events shaped the terrain we see today! The Birdsboro basin may represent the larger Mesozoic rift basin that we only get small glimpses of today!Â
America's Oldest Rock - Part 1
What is the oldest rock you can stand on in the United States? As the title of Frost et al., 2025 says, it is a simple question with a complex answer. In this episode, we journey to the north-central United States, where you'll find some of the oldest rocks in North America. Join us as we go through the candidate locations and dive real deep into the weeds of zircon uranium-lead geochronology! The more you learn, the less you know.Â
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The Geology of the Battle of Gettysburg - A PlanetGeo Field Trip
Rockstars! Welcome to our first-ever Planet Geo field trip! Join us as we hit the road to Gettysburg and dig deep into the geology that shaped one of the most pivotal battles of the American Civil War. From the rocks that dictated troop movements to the geomorphology of battlefield ridges, we're taking you on an epic journey. Discover how ancient sediments and volcanic flows set the stage for a historic showdown. Plus, we explore the stunning South Mountain - it's a rock-solid adventure you won't forget. Ready to field trip? Subscribe and join us on this geo-exploration!Â
T...
The White Cliffs of Dover - Nature's Chalkboard
Welcome to another thrilling episode of PlanetGeo! In this episode, we dive deep into the jaw-dropping geology of the White Cliffs of Dover. We explore the formation and significance of chalk, a rock star in the geologic world. Learn about its formation during the late Cretaceous period, its economic uses, and its pivotal role as an aquifer system in Europe. From the fascinating microscopic coccolithophores to the sweeping landscape of the English coastline, this episode is sure to keep you on the edge of your rock hammer! Don't take it for granite! Tune in and discover the geological story b...
Of Stones And Startups: A Geoscience Transformation?
Join us as we explore the (lack of) intersection of geoscience and entrepreneurship. In this engaging discussion, we delve into the importance of business acumen in geological sciences, but also highlight the cultural obstacles within the field. We share personal insights and experiences while discussing how educators and institutions can better prepare students for innovative roles in geoscience. Tune in for a thought-provoking conversation packed with rock-solid ideas and practical solutions! 🌍🪨💡
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The Great River - Boyce Upholt
In this exciting episode, we dive deep into the natural and geological wonders of the Mississippi River with Boyce Upholt, author of 'The Great River.' Join us as we unravel the mysteries and magnificence of this iconic waterway, exploring its historical, ecological, and engineering marvels. Boyce shares his personal journey, the challenges of writing this extensive book, and fascinating insights into the Mississippi’s floodplains, levees, and more. If you're ready to rock and roll down the river, hit play and let's get started!
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Blue Gold? The Geology of Cobalt
Join us as we dig deep into the world of cobalt! This episode covers everything from the explosive growth in cobalt demand to the intriguing geology behind this critical element. We traverse through magmatic, sedimentary, and laterite cobalt deposits, touching on the societal and environmental issues tied to cobalt mining. Fun and intriguing, this episode is sure to rock your world with cobalt facts unseen! Don't miss the deep dive into where you can find this blue-hued marvel and why it's essential for today's energy transition.
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Think Like a Rock Star - It's a Good Time to Be a Geologist
Join us as we delve into a thought-provoking discussion on whether geologists truly think differently. From contemplating the scale of tectonic plates to grappling with deep time and dealing with complex, data-rich scenarios, this episode digs deep into the elements that shape a geologist's unique perspective. Featuring intriguing anecdotes, our class exercises, and even a claim about biologists that's bound to cause some tectonic shifts. This episode rocks! 🌍🔍
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On the app you can get tons of free content, exclusive images, and access...
Caldera Chronicles - Unzipping the Mysteries of Long Valley With Dr. Andy Calvert
Join us in this explosive episode as we dive deep into the hot topics of Long Valley Caldera with knowledgeable volcanologist Dr. Andy Calvert! Get ready for a magmaficent discussion on one of the most studied volcanic regions in the world. From discovering the volcanic history and understanding the geothermal wonders, to deciphering the processes of second boiling and fractional crystallization, this episode is sure to rock your world. Dr. Calvert even shares fascinating insights about the neighboring Mono Craters and his latest adventures in New Zealand. Don't miss this chance to explore the goldilocks geology of California and...
The Boiling Point - Decoding Long Valley Caldera's Volcanic Future
Discover the uplift-ing story of Long Valley Caldera! 🌋 In this riveting episode, we dig deep into tremors and uplift, unraveling the saga of resurgence domes and the seismic swarms shaking up the geoscience world. From the fascinating formation and swelling of the dome to the debate between magma intrusion and second boiling, we explore the cutting-edge techniques volcanologists use to get to the core of volcanic activity. Whether it's fiber optic cables behaving like seismometers or boiling off volatiles in dying magma chambers, we've got the lowdown on all things Long Valley Caldera. Grab your geological notebook, this episode roc...
Heat Without the Show - Long Valley's Hydrothermal System
Join us as we dig deep into the steaming secrets of Long Valley Caldera's hydrothermal activities! We discuss the unique geological features that make Long Valley Caldera a hotbed of hydrothermal phenomena, from hot springs and fumaroles to the mysterious lack of geysers. Learn about the dynamic interplay of magma, groundwater, and the geothermal power lurking beneath the surface. Plus, we tackle some explosive hydrothermal eruptions and uncover the tragic tales of CO2 tree kills. Don't miss this gripping journey through one of North America's most intriguing volcanic systems!
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The Geological Fruit Fly - The Bishop Tuff and Long Valley Caldera Eruption
Join us as we dig into the hot (and viscous!) topic of the Long Valley Caldera's explosive history. 🪨 From the dramatic six-day eruption that shaped this geological wonder to the intricate details of the Bishop Tuff, you'll get a front-row seat to the science behind these monumental volcanic events. Discover how a simple basalt intrusion led to a massive caldera-forming eruption and why the Bishop Tuff is considered the 'fruit fly' of geological studies. Along the way, we tackle the mysteries of magma evolution, thermometry, and the mind-blowing scale of these super eruptions. Whether you're a geology aficionado or jus...
The Basalt Before the Blast - The Leadup to The Long Valley Caldera
Join us as we embark on a volcanic journey delving deep into the fiery mechanics of the Long Valley Caldera. In this episode, we dissect the intricate process of mantle-derived basalt and its trans-crustal journey leading to magmatic differentiation and colossal eruptions. We explore the evolution of magma, touching on essential principles like partial melting, crystal assimilation, and fractional crystallization. Don’t miss out on this magma-nificent discussion that builds up to the explosive eruption in their next episode!
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Between a Rock and a Hot Place: Long Valley's Tectonic Tale
Join us as we hack our way through the geological 'weeds' of the Long Valley Caldera! In today's episode, we simplify complex tectonic interactions, explaining how a perfect storm of tectonics led to one of Earth's largest volcanic eruptions. Whether you're a geology novice or a seasoned expert, you'll discover the role of trans-tension, decompression melting, and the intricate dance of fault lines in the Western United States. We also debunk the myth that Long Valley is a hotspot, contrasting it with the famous Yellowstone! Get your rock hammers ready—it's time to dig deep!
Download th...
Evolution of Eruption - Intro to the Long Valley Caldera
In this introductory episode, we plunge into the depths of the Long Valley Caldera's explosive history! 🌋 Join us as we unravel the volcanic secrets behind one of the biggest eruptions of the last 2 million years. From the initial mantle melting to the mind-blowing eruption 767,000 years ago, discover how this geological marvel evolved. Dive into the intricate interplay of tectonic forces, mantle upwellings, and crustal melting that shaped this volcanic wonder. Plus, catch a glimpse of the differences between Long Valley and Yellowstone, and learn why the Long Valley Caldera is often referred to as the 'geological fruit fly' of eru...
How to Get Hired - CEO Lindsey Schultz
In this episode of Planet Geo, we speak with Lindsey Schultz, the CEO of MRC Recruiting, a leading recruitment agency in the mining sector. The discussion explores the evolving landscape of geoscience and mining careers, emphasizing the significant demand for geologists and the factors impacting employability. Lindsey shares personal anecdotes and professional insights on networking, the importance of continuous education, effective communication, and building a personal board of directors for career growth. She also highlights her podcast 'Ore-atory,' which focuses on innovative voices in mining, and provides practical advice for students and early-career professionals looking to enter the...
The Answers Are in the Rocks - It's a Good Time to Be a Geologist
In this rock-solid episode, we dive into Part 3 of their exciting geology series! 🪨 We discuss why it's a golden age to be a geologist, focusing on how the answers to many of today's challenges are literally set in stone. From contact metamorphism to the fascinating world of serpentinites, we explore how these natural processes are crucial in addressing climate change and charting a path towards the future. We even touch on the possibility of harnessing geological hydrogen as a sustainable energy source. Don't take this episode for granite—rock out with us and discover how geological processes could transform our f...
Induced Earthquakes, Fracking, and the Future of the Subsurface with Dr. Katie Smye
Join us for an exciting episode as we dive deep into the world beneath our feet with Dr. Katie Smye, a renowned research associate professor at the University of Texas at Austin. In this interview, Dr. Smye takes us on a full journey through the intricacies of fracking, induced seismicity, and the oil industry. Learn how modern drilling technologies have revolutionized energy production and the challenges associated with wastewater injection. Dr. Smye also shares her inspiring pathway into geoscience and the critical role geoscientists play in shaping our energy future. From her fascinating research on earthquakes to the importance...
The Future Lies At Depth - It's a Good Time to be a Geologist
In this episode of Planet Geo, Jesse and Chris delve into why now is an exhilarating time to be a geologist. They explore the importance of understanding what's beneath our feet—literally—and its implications for everything from finding deeper, smaller, and more costly geothermal energy sources to creating metamorphic reactions. There's emphasis on how the next big boom in geoscience will be driven by the world's changing needs, particularly in energy transition and climate solutions, which lie at depth. Also, they discuss how fracking for heat and mapping geological features at extraordinary depths can provide answers to today's pres...
The Geology of Petoskey Stones
Join us as we dive deep into the world of Petoskey Stones, Michigan’s state fossil! 🌊 In this episode, Chris and Dr. Jesse explore the beautiful, fossilized coral known as Petoskey Stones. Discover how these unique stones, beloved by collectors, tell a story of ancient tropical seas and glacial movements. Learn about their formation, significance, and where to find these geological gems. This episode is perfect for rock hounds, fossil fanatics, and anyone who loves uncovering the stories written in stone. 🌟
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On the a...
Buy Low, Sell High - It's a Good Time to Be a Geoscientist
It's a good time to Buy Geoscience!Â
Join Chris and Jesse as they kick off an exciting series on why it's a great time to be a geoscientist! They dive into enrollment trends, industry demands, and the bright future ahead for those passionate about rocks and the Earth. The discussion covers the evolving perception of geosciences, the decline in geoscience programs, and how upcoming events will create a surge in demand for skilled geologists. Whether you're considering a career in geology or just rock-curious, this episode offers valuable insights into the dynamic world of geosciences. Plus, don’t m...
Navigating Rocks - Field Geology and the Evolving Geosciences
Join us as we tackle the rocky topic of field geology's relevance in today's world, sparked by a listener question from Taylor. We delve deep into whether mapping rocks and fieldwork are becoming outdated or if they still hold significant value. Chris and Jesse share personal anecdotes, debate the evolving landscape of geoscience education, and highlight the importance of diverse skill sets in the field. Get ready for a journey through rugged terrains, fascinating geological insights, and a spirited discussion on balancing fieldwork with lab skills!
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Geology of Puddingstone
In this exciting episode of Planet Geo, Chris and Jesse dive deep into the fascinating world of pudding stones! From the picturesque Hertfordshire pudding stones in England to the Roxbury conglomerate in Massachusetts, and finally the scientifically wondrous Lorraine Quartzite pudding stone abundant in Michigan. They discuss the unique geological stories each of these beautiful rocks tells and explore their origins, formations, and scientific significance. Plus, get ready for some rock-solid fun facts about the ancient landscapes and climates these stones reveal. Don't miss this riveting geological adventure that promises to be a conglomerate of knowledge and excitement. Let's...
Gaia - The Earth As a System with Dean Lee Kump
In this episode of Planet Geo, hosts Jesse and Chris have an in-depth conversation with Dr. Lee Kump, Dean of the College of Earth and Mineral Sciences at Penn State. In a chat that's more exciting than discovering a trilobite fossil, they explore Lee's profound career journey, paper citations thick enough to bury any rock hound, and his transition from groundbreaking geoscience research to becoming an influential administrator. Kump’s impressive resume includes over 130 published papers and groundbreaking work in Earth System Science, not to mention scuba diving in poisonous waters for fun. He also shares poignant stories about th...
Geology's Ologies
In this episode, Chris and Jesse delve into the various 'ologies' within geology, sparked by a listener question regarding the differences between geology and geography. The discussion explores the evolution and rebranding of geology departments, their experiences with different specializations, and the significance of courses like mineralogy and petrology. They share insights into their favorite fields and ones they have recently grown to appreciate. Adding some humor, Chris calls his mother Joyce to get her take on her favorite 'ology.' The episode emphasizes the importance of a broad and diverse geosciences education to adapt to evolving scientific landscapes.<...
Are These Earth's Oldest Rocks?
Get ready to dig deep into the geological weeds with Dr. Jesse Reimink and Chris Bolhuis as they tackle the rock-solid debate about Earth's oldest rocks! Is the Ujaraaluk unit in Northern Quebec truly 4.25 billion years old? Or is it just a rocky mix-up? We meticulously break down isotope geochemistry, hydrothermal beauties, and field observations. Discover how extinct isotope systems shed light on our planet's fiendishly old secrets. Plus, we'll uncover the realities of cross-cutting relationships and metamorphic mysteries. Dive in, and don't get too basalt by the complexity!
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The Hit and Run Rockies - With Professor Basil Tikoff
Join us for an insightful conversation with Dr. Basil Tikoff, a geoscience professor at the University of Wisconsin. We dive deep into the intriguing and controversial 'hit and run' model of the Rocky Mountains formation. From structural geology to the battle of geological models, this episode covers groundbreaking research, debates in the geological community, and the complexities of understanding mountain formation. Don't miss this exciting interview packed with scientific exploration and discoveries!
Download the CampGeo app now at this link.
On the app you can get tons of free...
Idaho to Iceland - Shawn Willsey
In this enlightening episode, we sit down with Shawn Willsey to explore his journey as a geologist and educator. We discuss his impactful YouTube channel, where he brings the wonders of geology to a broad audience, how COVID-19 influenced his educational outreach, and delve into his contributions to seminal geology books like 'Geology Underfoot in Southern Idaho' and 'Roadside Geology of Idaho.' Shawn also shares insights into his teaching at the College of Southern Idaho, the processes behind his field-based educational content, and his plans for future projects. Join us for a fascinating conversation about the intersections of...
Earth's Oldest Sediments - The Isua Supracrustal Belt
Hold onto your rock hammers, folks! 📉🌎 In this episode, we're peeling back the layers (pun intended) of the Isua Greenstone Belt in Southwest Greenland. Tune in as we dive into debates about changing the name of geology classes, virtual Fight Clubs, and the complexities of Earth's ancient rocks. Could sediments, pillow basalts, and potential signs of life from 3.8 billion years ago hold the keys to planet Earth's past? We’ll examine graphite layers and supposed stromatolites (yes, those algal wonders), and their controversies. Geology jargon and some decent rock puns included! Don't just be a sedimentary listener—subscribe, like, and join u...
The Geology of Quartz
Quartz crystals are often the first example of minerals that people see, and are a source of inspiration for many a young geologist. In this episode, we delve into a comprehensive discussion about quartz, a major rock-forming mineral characterized by its durability and prevalent in various geological environments. Key topics include the physical properties of quartz, the formation and identification of its different varieties like amethyst and rose quartz, and the role of titanium as a temperature indicator. The episode also highlights the use of quartz in learning and its applications in understanding geological processes. Join us as we...
Our Past Favorites #8 - Plants, Meanders, and How to Read a Geoscience Paper
Here is a link to the paper we discuss in this episode:
In this episode, we talk about meandering streams. Why don't rivers flow in straight paths? As soon as a river flattens out, it begins to meander. It’s these meanders that manage the energy of the water. How? They really do 2 things: 1- they increase the resistance (physics) and 2- they decrease the gradient. Essentially, the river is changing itself to minimize the energy it expends to maintain a state of equilibrium. We also get into some detail. Meanders are not random. T...
Our Past Favorites #7 - Not All Who Meander Are Lost
In this episode of Planet Geo, we delve into the fascinating world of meandering streams. Join Dr. Jesse Reimink and Chris Bolhuis as they reminisce about their favorite episodes and explore the dynamics of meandering rivers. We discuss why they’re one of our favorite topics, from the patterns in geology to the intricate details of stream meanders. As we share personal stories and discuss the physics behind river dynamics, you'll gain a new appreciation for the beauty and complexity of meandering streams. Enjoy a blend of scientific insight and personal anecdotes that bring these flowing wonders to life!
...Our Past Favorites #6 - The Geology of Wine with Brenna Quigley
n this holiday re-release episode of Planet Geo, we revisit our exciting conversation with Brenna Quigley, a geologist turned wine consultant and terroir expert. We discuss her unique career trajectory, the fascinating intersection of geology and wine, and the concept of terroir. Brenna shares insights into her work, how geology influences vineyards, and the impact of terroir on wine taste. We also delve into Brenna's personal journey into geology, her transition from mineral exploration to the wine industry, and her passion for educating others about the geological story beneath our feet. Join us for an engaging episode that unveils...
Our Past Favorites #5 - Geology and National Defense with Dr. Stefanie Tompkins
In this episode of PlanetGeo, we chat with Dr. Stefanie Tompkins, the director of DARPA, about her incredible journey from geologist to leading one of the most innovative research organizations in the world. We discuss everything from her early passion for geology and the unexpected ways it prepared her for a career in national defense, to DARPA's groundbreaking advancements, including the surprising origins of the mRNA vaccine research. Dr. Tompkins shares her unique insights on the multidisciplinary nature of geology, the value of failure, and the thrilling yet intensive environment at DARPA. This conversation provides a fascinating glimpse into...
Our Past Favorites #4 - The Geology of Countertops
In this episode we dive into the fascinating world of countertops, exploring the geology behind the materials commonly used in kitchens and homes. They discuss the different types of rocks, including granite, pegmatite, marble, schist, gneiss, quartzite, and even synthetic options like quartz and engineered stones. With their engaging banter and deep geological insights, they unravel the complexities of these materials, making it an informative and entertaining listen. The episode also touches on practical aspects of selecting a countertop, the massive scale and economic impact of the industry, and the processes involved in quarrying and fabricating these beautiful stone...
