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!
The Moon-Forming Impact - Q&A with Dr. Rachel Phillips aka GeoGirl
In this episode, we're back with the fabulous Dr. Rachel Phillips, also known as Geo Girl on YouTube, diving into part two of our intriguing Q&A session. This time, we cover listener questions about early Earth geology, the moon-forming impact, geochemistry, and much more. Spoiler alert: we journey into the cosmic and tectonic weeds, so grab your scientific hats as we ponder if the moon-forming whammy kickstarted plate tectonics and its broader implications on our planet! The center of our discussion revolves around a burning question: Did the moon-forming impact trigger plate tectonics? From vigorous debates on early...
Whence Plate Tectonics? Q&A with Dr. Rachel Phillips aka GeoGirl
Jesse joins forces with Dr. Rachel Phillips, AKA Geo Girl, to tackle viewer questions about Earth's oldest rocks. We cover a wide range of topics, from how Earth's age is calculated using meteorites to the intriguing details of zircon dating. We also discuss the beginnings of plate tectonics, early continents, and the much-debated timeline of Earth's geological history. This in-depth discussion is packed with scientific insights, humorous quips, and plenty of geologic puns to keep you entertained. Don't forget to check out our Camp Geo mobile app for a deep dive into Earth's ancient rocks!
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Rocks and Rules, Putting Things in Order (Re-Release #1)
In this episode of Planet Geo, we share some exciting updates as Chris steps back a bit. Don’t worry; Chris will still join us regularly, but you'll also be hearing more often from fantastic guests like Dr. Rachel Phillips, Dr. Mike Ackerson, and Dr. Josh Davies. We’re diving deep into the geoscience topics we all love and bringing you insightful interviews with geoscience leaders. We’re also eager to hear your feedback, so please reach out on our social media or website with your thoughts on the show's future direction.Â
Before we usher i...
The Length of Day 2.5 Billion Years Ago - BIFs, Milankovitch, and Geochron with Dr. Josh Davies
Join us as we dive into an awe-inspiring chat with Dr. Josh Davies – an expert in high-precision geochronology! Josh and Jesse go way back to their University of Alberta days, and in this episode, they unravel a groundbreaking project involving banded iron formations. Together, they explore how these ancient rocks bring to light the Earth's history, dating back 2.5 billion years. Discover how the research reveals the Moon-Earth distance and the length of days billions of years ago. Plus, stick around to hear their field stories and the future of geochronology!Â
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What is a Continent? Part 1 - The Composition
In this episode, we dive deep into the composition and formation of the continental crust! We explore the tough questions about what makes up our continents, debunking some rudimentary class teachings and revealing the misunderstandings in our current knowledge! But don't worry—it’s not all sedimentary! We also ponder the role of basalt and Granite, the conundrum of exhumed terrain, and even how we get our data from the deepest boreholes. Plus, they touch on the notion that water might just be the secret ingredient to building continents! Ready to rock? Let’s dig in!
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Stories in Stone - with David Williams
Ready to rock your buildings with some fascinating geology tales? Join us as we chat with the amazing David B. Williams, author of 'Stories in Stone.' David shares his insights on the hidden geological marvels in urban landscapes and the history behind some iconic building stones. From Seattle's local quarries to Chicago's memorable marbles, this episode is a treasure trove of stone-cold facts! Dive in for a journey that melds earth science and architectural history in the most intriguing way. Also, stick around to hear about David's adventures as a park ranger and how that led him to...
From Rifts To Rifles - The Regional Geology of the Battle of the Gettysburg
Join us in this action-packed final episode of our Gettysburg series as we uncover the rock-solid weathering patterns that shaped one of the most famous battles in history! Standing on the historic battleground, you'll see how two supercontinent formation and breakup events have influenced the topography and geology of Gettysburg. Discover the impact of weathering and time on the eastern U.S landscape, and how these factors played a crucial role in the outcome of the Battle of Gettysburg. From the rugged Blue Ridge Mountains to the fertile soils of the Great Valley, we dive deep into the geological...
Flash Floods
Join us for a deep dive into the world of flash floods in this exciting episode! Navigate the rapid waters of this intense topic with Chris and Jesse, as we unravel the captivating geoscience behind these dramatic events. From the devastating impacts of flash floods to the intricate balance of soil, vegetation, and slope, we leave no stone unturned. Discover how human activities and climate change are setting the stage for more frequent flash floods and learn the innovative engineering solutions designed to mitigate their effects. Buckle up and get ready to enhance your infiltration knowledge—because this is one...
Calderas and Confederates - The Geology of South Mountain and the Gettysburg Campaign
In this action-packed episode of our Gettysburg Geology series, we dig deep into the dynamic geological history of South Mountain. Discover how this towering terrain played a pivotal role in the Battle of Gettysburg, from offering a sneaky passage for the Confederates to serving as a dramatic retreat route. We explore the fascinating world of faults, folds, and the incredible rocks that shape this region. From ancient basalt and rhyolite to the rugged sandstones that make up many of the highest peaks, you'll be on the edge of your seat as we unearth the layers of history and geology...
Eruptions and Extinctions - The Geology of the Gettysburg Sill
In this episode of our visual podcast series, journey back to the battlefields of Gettysburg to unearth the geological forces that played a pivotal role in history. Dive deep with Herr Professor Dr. Reimink and Chris Bolhuis as they explore the York Haven Sill and Rossville Dykes, parts of the massive Central Atlantic Magmatic Province (CAMP). Discover how these ancient volcanic events potentially triggered the end-Triassic mass extinction. Packed with juicy geochronology details, this episode mixes wit, history, and science—one sedimentary layer at a time. Tune in to see how geology not only provides the high ground but al...
Capitol Curiosities - Fanglomerate and the Gettysburg Basin
Join us on a rockin' journey as we explore the fascinating tale of Potomac Marble and its role in rebuilding the US Capitol after the War of 1812. From the emotional experience of visiting ancient quarry sites to the intricate details of fanglomerates and alluvial fans, we uncover the geology behind this historically significant stone. Whether you're a rock enthusiast or just love a good story, this episode has something for you. Don't miss out on learning how Leesburg Fanglomerate shaped American history and the geological processes that made it so unique! Plus, find out why keeping your 'rock friends...
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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On the app you can ge...
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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On the ap...
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
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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!
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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...
