The Geology Flannelcast: Recent Episodes
Chris Seminack, Jesse Thornburg, and Steve Peterson
We Talk about the volcano Novarupta in this episode. Novarupta was the largest volcanic eruption of the 20th century and is located along the Aleutian Islands in Alaska.
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We talk about a New York Times article which discusses how rising sea level will affect atolls, specifically the island nation of the Maldives.
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The Sur Pockmark field is located off the coast of central California near Big Sur. The seafloor is riddled with mysterious circular depressions. A new study may have figured out how they formed.
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In this installment of the Flannelcast, we’re talking about Jesse’s summer vacation plans to the Grand Canyon. We’re getting Jesse ready for this trip by going through the geologic history of the Grand Canyon.
Links:
Grand Canyon Stratigraphy
Farallon Plate
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The Anthropocene is a proposed geological epoch marked by the significant impact of human activities on the Earth's geology and ecosystems. In this installment of the Geology Flannelcast, we talk about the conversation that is being has about when to officially start the Anthropocene.
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Celebrating 10 Years of The Geology FlannelcastHere’s to a decade of sharing our passion for geology. In this episode you’ll hear about some of the behind the scenes stories of the Geology Flannelcast.
Thank you to our dedicated listeners' unwavering support. Our audience inspires and propels us forward. We are appreciative of the opportunity to share our love for Earth's history, processes, and wonders. Here's to many more years of exploring geology together! Thank you for being part of our journey!
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The North Carolina Gold Rush
The year was 1799 when Conrad Reed stumbled upon an extraordinary yellow nugget while fishing in Little Meadow Creek, near what is now Charlotte, North Carolina. Little did he know that this chance discovery would set off a chain reaction that would forever alter the course of North Carolina's history.
Word spread like wildfire, and it wasn't long before prospectors descended upon the region, igniting the North Carolina gold rush. Soon, intrepid fortune seekers, drawn by the allure of untold riches, flocked to the Tar Heel State in search of their dreams.
The gold fever gripped the hearts and minds of countless individuals, from seasoned miners to common folk seeking to change their fortunes. Streams, creeks, and rivers became the lifeblood of the gold rush, each shimmering current hiding the potential for great wealth beneath its surface.
As the rush gained momentum, towns sprouted up along the gold-bearing veins of the state. Salisbury, Fayetteville, and Charlotte became bustling hubs, swelling with prospectors, traders, and settlers hoping to share in the wealth extracted from the earth. Mines dotted the landscape, testament to the relentless pursuit of gold.
North Carolina's gold reserves, while not as vast as those of California, were no less significant. The region's fertile soil, rich in minerals, concealed gold veins that ran deep beneath the earth's surface. The Piedmont region, with its rolling hills and flowing rivers, proved to be a particularly prosperous area for miners, rewarding their tireless efforts with abundant finds.
The North Carolina gold rush may have peaked and faded into history, but its legacy endures. It serves as a reminder of the hidden treasures that lie beneath Earth's surface and the eternal allure of striking it rich.
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The Central Atlantic Magmatic Province (CAMP)
The Central Atlantic Magmatic Province (CAMP) has left an indelible mark on the geologic history of our planet. Spanning millions of years, this colossal volcanic event unfolded approximately 200 million years ago during the Triassic period, forever altering the face of the Earth.
CAMP erupted along the rifted margins of the supercontinent Pangaea, stretching from present-day North America through Europe and Africa. This immense outpouring of lava and volcanic activity blanketed vast areas, surpassing any volcanic event witnessed in recent geological times.
The geological episode gave rise to an extensive igneous province that covered an astonishing area of more than seven million square kilometers. With powerful volcanic eruptions and the formation of gigantic fissure systems, the CAMP unleashed an unimaginable volume of molten rock, emitting massive volcanic gases and ash into the atmosphere.
The impact of CAMP on Earth's biosphere was overwhelming. The sheer magnitude of volcanic activity led to drastic environmental changes, as eruptions spewed ash and gases, potentially causing global climate disruptions. With the release of vast quantities of greenhouse gases, including sulfur dioxide and carbon dioxide, the global climate may have been influenced, exacerbating the greenhouse effect.
Furthermore, CAMP had significant consequences for life on Earth, leading to one of the most severe mass-extinction events in the planet's history, the end-Triassic extinction. This devastating event affected marine and terrestrial ecosystems, wiping out numerous species, including many reptiles and amphibians. It was a crucial turning point, paving the way for fundamental changes in plant and animal evolution.
While the causes of CAMP remain somewhat enigmatic, scientists believe that the vast outpouring of magma was likely due to intense activity associated with the opening of the Atlantic Ocean. This massive volcanic phenomenon profoundly shaped the geologic conditions we observe on our planet today.
The Central Atlantic Magmatic Province remains a captivating and fascinating subject of study for geologists and paleontologists alike. Its magnitude and impact have shaped our understanding of Earth's complex past, reminding us of the power and intricacies of the planet we call home.
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Doggerland is the area of land that connected the UK to continental Europe during the last ice age. In this episode, we talk about how Doggerland formed, and how it was eventually flooded out.
We talk everything about the moon in the episode - how it formed, what it’s made of, NASA missions, and a ton more random facts.
In this episode, we talk about efforts to drill into mantle rock. It’s one of the holy grails of geology and it doesn’t come easy.
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In this episode, we talk about what is Carbon 14, how it forms, and we we can use it to date things.
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In this episode, we talk all about the who, what when, where, and why of floods.
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This episode is all about the geology behind tsunamis and how they may be the scariest of the natural disasters.
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In this episode of the Geology Flannelcast we talk about geologic topics that really scare us. What are we scared of the most? Listen and find out.
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This episode talks about a new study regarding the rotation habits of the Earth’s inner core, and how it affects the rest of the planet.
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Oceans take up 71% of the surface area on Earth. They’re kind of a big deal. Here we talk some facts about the Earth’s oceans and discuss how important they are from influencing climate to housing ecosystems.
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Radon is a naturally occurring radioactive gas that can be found in many people’s homes. It is the second leading cause of lung cancer, behind smoking. Here we discuss where radon comes from and what you can do to remediate it.
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Mauna Loa starting erupting for the first time since 1984. We talk all about the eruption and the mechanics of Hawaiian volcanoes.
USGS Live Stream of Mauna Loa
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Steve and Chris take Jesse’s Sedimentary Environments exam. See how they fair in this week’s episode.
In this episode, we talk about the importance of sediment accommodation in depositional environments.
This week’s episode is literally too cool for school. We’re talking about the Laurentide Ice Sheet and ice ages.
In this spooky, Halloween appropriate podcast, we break down some of the mysterious stories related to the Bermuda Triangle and how geologic phenomena can debunk some of the supernatural theories.
We discuss the geology of Loch Ness, one of the largest lakes, located in the Scottish Highlands. And of course we discuss how the Loch Ness Monster is tied to the geology of the area.
You asked for it and we delivered. This is probably the most requested episode we've gotten. We sit down with some popcorn and comment on the blockbuster 1990s film Dante's Peak.
We go through some of our favorite US National Parks and a little bit of the geology relating to those parks.
This week’s episode is a Patreon request. The Long Valley Caldera is located in the Eastern Sierra Nevada. We talk about the geologic history of the Sierra Nevada and the relatively recent activity at the Long Valley Caldera.
Everything Mediterranean Sea is the topic of this episode of the Flannelcast. We talk about the formation of this mighty water body and how it dried up for a bit about 5 million years ago.
The Gaia Hypothesis proposes that the Earth acts like a living entity as a whole, keeping things like atmospheric and oceanic chemistry regulated.
The Silurian Hypothesis is a thought experiment that discuses what the geologic signature would be if there was a advanced civilization on Earth hundreds millions of years ago.
We talk about volcanic hazards and all the different ways you can die from a volcanic eruption.
Alfred Russell Wallace is the most famous scientist that you’ve never heard of. We talk about his work, the Wallace Line, and how he inspired Darwin.
We talk all about lakes in this episode… the biggest, the highest, the oldest, the dirtiest.
It turns out that plate tectonics may be really important for life, especially for cycling nutrients.
We cover the highlights of Alaska geology in this episode. Brought to you by a Patreon request.
We break down those strange and mysterious intraplate volcanoes known as hot spots in this episode.
This week’s episode is a Patreon requested topic - cool stuff along the coastal plain. We talk specifically about interesting features along the US southeast Atlantic coastal plain.
Lake Nyos is a crater lake in Cameroon with a deadly past. In 1986 it released a huge amount of carbon dioxide, killing 1,746 people.
We talk about a new study that suggests what time of year the Chicxulub Impact hit Earth 66 million years ago.
In honor of the Winter Olympics ending last week we decided to devote an episode to the sport that incorporates geology the most... curling.
The James Webb Space Telescope just sent back it’s first images. This episode is devoted to the most powerful telescope ever built.
This week, we talk about how super mountains could have led to spikes in evolution, including the Cambrian Life Explosion.
in this episode, we talk about some hazardous minerals that you may want to keep out of your collection
This week's episode is about how humans have permanently altered the course of two rivers.
The Flannelcasters talk about the different types of clay, how it forms, and industrial uses of clay.
We’re back from our brief hiatus. This episode is all about our favorites in geology - our favorite field trip, favorite geologist, and even favorite delta, just to name a few.
Happy Winter Solstice! The Flannelcasters talk about the history and geology of Stonehenge and how it related to the Winter Solstice.
The flying fickle finger of fate has picked this week’s topic - surface water. We cover everything from drainage basins to meanders to base level.
The Flannelcasters talk about the history and hazards associated with the group of minerals known as asbestos.
In the second installment of the coastal geology miniseries, we talk about how tides work.
The Flannelcasters break down the basics of coastlines in the first installment of a coastal geology miniseries.
Ted Bobik joins us on the Flannelcast to talk about his work on the Eocene-Oligiocene Transition.
The Flannelcasters talk about the potential causes of the late Devonian extinction, as well as it’s extent.
The Cascadia Subduction Zone is located off the Pacific coast of the United States and Canada. It is responsible for the formation of the Cascade Mountains. Geologists believe a magnitude 9.0 earthquake could occur in the near future along this subduction zone.
The Adirondack Mountains are located in northern New York, but their formation is completely unrelated to the nearby Appalachian Mountains.
The Flannelcasters talk about the largest underwater volcanic eruption ever recorded, off the coast of Mayotte.
The Flannelcasters talk about the Well of Hell in Yemen, and some other notable sinkholes around the world.
The Great Unconformity in some locations has nearly a billion years of missing time in the rock record. We talk about what it is and new insights on how it formed.
This week the Flannelcasters talk about the Kola Superdeep Borehole - the deepest borehole ever drilled by humans, extended nearly 12 km below the surface of the Earth.
The Flannelcasters talk about the cause of the 1906 San Francisco earthquake, the resulting damage, and positive changes resulting from the earthquake.
In this week's episode the Flannelcasters talk about clastic sedimentary environments. Then they finish up the episode talking about Mars rovers.
This week, the Flannelcasters talk about the 100-year flood and some other topics related to flooding.
The Flannelcasters talk about the end Permian mass extinction - the worst known mass extinction where 90% of the planet's species died off.
It's time for Listener Questions 6! We take your questions and answer them live on the podcast.
We tried something new this episode. In Ep. 101, we randomly picked a topic in a geology textbook for our episode theme.
The Flannelcasters discuss the Chesapeake Bay impact event , which occurred 35 million years ago.
The Flannelcasters talk about the three oldest rivers in the US - The New, French Broad, and Susquehanna Rivers. These rivers are also some of the oldest in the world.
The Flannelcasters revisit the topic of minerals. They talk about their favorite minerals, properties of minerals, and some fun stories about minerals.
The Flannelcasters talk about what cause lahars and the dangers associated with these volcanic-related events.
This week the Flannelcasters talk about Siletzia and some U.S. Pacific Northwest tectonics.
The Flannelcasters talk about extraterrestrial plutonium in the ocean, Darwin’s Arch in the Galapagos Islands falling down, and ghost forests releasing greenhouse gasses.
The Flannelcasters talk about chert - it's uses, how it's made, and where it forms. Also, they talk about why diatoms are so important to life on Earth.
The Flannelcasters talk about Banded Iron Formations. These rocks are super old, no longer are formed on Earth, and record the appearance of abundant oxygen.
The Flannelcasters talk about the snowball Earth hypothesis, where the Earth froze over several times at the end of Precambrian time.
The Flannelcasters talk about Harry Hess and the origin of the theory of plate tectonics.
The Flannelcasters talk about Alfred Wegener, the man who proposed the continental drift hypothesis, which eventually paved the way for the theory of plate tectonics.
This is part two of two in the Appalachian Mountains series. The Flannelcasters cover the Alleghanian Orogeny and the erosion of the Appalachians.
In this first of two part series, the Flannelcasters cover the geologic history of the Appalachian Mountains from the Grenville to Acadian Orogeny.
The Flannelcasters talk about the origin of life; how, when, and where life most likely started.
The Flannelcasters talk about a possible ocean in early Earth history that covered the globe, newly discovered ways that humans are affecting relative sea-level rise, and how the oldest meteorite ever discovered is pretty unique.
Mt. Sinabung in Indonesia erupted this week. The Flannelcasters devoted the entire episode to talking about Indonesia’s volcanoes. They also talk about Saudi Arabian oil and the Richter scale.
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Matt Sophy is a geologist working in the geothermal energy field in New Zealand. He talks with the Flannelcasters about the geology of New Zealand.
Links:
New Zealand Geology: An Illustrated Guide
Soil liquefaction
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The Flannelcasters talk about the recent winter storm in Texas, it’s effects on the power grid, and how it relates to weather and climate change.
Links:
Texplainer: Why does Texas have its own power grid?
Texas largely relies on natural gas for power. It wasn’t ready for the extreme cold.
No, frozen wind turbines aren’t the main culprit for Texas’ power outages
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This week the Flannelcasters cover to topic of sandstone - what they are, how they form, and the different types.
Links Mentioned in the Podcast:
Glacier Bursts in India, Leaving More Than 100 Missing in Floods
The Blood Harvest - Each year, half a million horseshoe crabs are captured and bled alive to create an unparalleled biomedical technology.
Death Valley Just Recorded the Hottest Temperature on Earth
Johnstown Flood
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The Flannelcasters talk about how glaciers form and geologic features that are caused by glaciers.
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This is the 3rd and final episode of our coal trilogy. The Flannelcasters talk about coal gas, acid mine drainage, and the town of Centralia.
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In part 2 of our coal mini-series, we explain the concept of clean coal, emissions from burning coal, and how byproducts of burning coal can be reused.
Links:
What ‘Clean Coal’ Is — and Isn’t
Everything You Need to Know About Clean Coal
What is clean coal technology?
Synthetic Gypsum
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This is the first of a two part series discussing coal. In Part 1, we talk about how coal forms, how it is mined, and how it is used.
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The Flannelcasters discuss everything you ever wanted to know about rivers - what they are, how they work, what controls their velocity, and the top 10 biggest rivers in the world.
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The Flannelcasters talk about how the early Earth was so warm while the early sun was colder than today, tsunamis in Israel and Alaska, and early humans controlling fire.
Links:Chance played a role in determining whether Earth stayed habitable
Croatia Earthquake Video
Evidence for a massive paleo-tsunami at ancient Tel Dor, Israel
1958 Lituya Bay, Alaska earthquake and megatsunami
When Did Archaic Humans Control Fire?
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The Flannelcasters talk about a new study suggesting that early humans may have hibernated, another study that pushes back the date when early humans arrived in North America, how methane releases in the Arctic Ocean are affected by tides, and salt mines in Louisiana.
This week the boys talk about a meteorite that is older than our solar system, a new official elevation of Mt. Everest, and an announcement about aliens.
In this installment of the Geology Flannelcast, the guys talk about the discovery of a new mineral in a volcanic setting, erosion and uplift in the Alps, and how the early continents formed.
In this installment of the Geology Flannelcast, the boys talk about some current events in the geology world. They cover a mysterious monolith found in the Utah desert, what life may have been like for the last dinosaurs, a new way to make synthetic diamonds, and a new Precambrian death assemblage discovered in Greenland. Additionally, the Flannelcasters unveil a new show segment called Jesse Trends. Chris mentions some Thanksgiving themed topics trending on Google and Jesse has to describe how the topics are linked to geology.
In this episode of the Flannelcast, the guys answer your listener questions. They cover topics like Mary Anning, mysterious seismic pulses, what killed the dinosaurs, and water trapped in minerals.
In this episode of the Geology Flannelcast, the boys talk about early Hominid tools in the geologic record, how 2020 is the most active hurricane season on record, and some cooking tips in National Parks.
In this installment of the Geology Flannelcast, the boys talk about how drones are being used to collect samples from active volcanoes, a high-resolution reconstruction of a dinosaur brain, and asteroids that are very similar to the make up of the moon.
In this episode of the Geology Flannelcast, the boys talk about the father of modern geology - James Hutton. Hutton was one of the OG geologists back in the late 18th century and developed the concept of uniformitarianism. Also, the guys talk about some stories in the news like low background steel, a asteroid that ended up being an old rock booster, and NASA making an announcement about water on the moon.
In this week's episode, the Flannelcasters talk about NASA's OSIRIS-REx mission landing on an asteroid, imaging the Resurrection Plate under North America, and some new evidence suggesting that volcanic activity caused the Permian-Triassic Mass Extinction Event.
In this episode, the Flannelcasters talk about the formation of the Sierra Nevada mountain range in California and the Alps in Europe.
This week, the Flannelcasters talk about victims of Mt. Vesuvius, more habitable planets than the Earth, and how wildfires contaminate groundwater.
The Flannelcasters take on a bunch of topics this week from buried liquid water lakes on Mars to a newly discovered mass extinction event.
The flannelcasters talk about using smart phone data to analyze earthquakes and track seismic waves, and a discussion on the possibility of life outside of Earth with the Fermi Paradox and Drake Equation.
In this installment of the Geology Flannelcast, the boys talk about a potential sign of life that was discovered on Venus, if Planet X could be a primordial black hole, and how does hematite form on the moon.
The boys take down Jurassic Park! In this episode they comment on the classic dinosaur movie. So sync this podcast up with Jurassic Park and learn some dino knowledge!
In this episode, the boys talk about the history of how the Paleozoic and Mesozoic Eras came about in the geologic time scale.
This week on the Geology Flannelcast, the boys talk about recent geology stories in the news like 300 million year old footprints found at the Grand Canyon, a hypothesis that supernovas caused a mass extinction event 359 million years ago, and moon dust build up on retroreflectors.
This week the boys take on a list of topics suggested by one of their Patreon sponsors. You can request your own topic on the Geology Flannelcast by becoming a Patreon sponsor.
Zealandia is an overlooked continent that wasn't described until 1995. The Flannelcasters talk about what is Zealandia and how it formed.
In this episode of the Flannelcast, the boys talk about a study that revives 100 million year old microbes and meteorites locked inside 460 million year old limestone.
In this installment of the Geology Flannelcast, the boys talk about Venus being tectonically active, a new study modeling the beginning of plate tectonics on Earth, and how COVID is affecting seismographs all over the world.
In this week’s installment, the Flannelcasters talk about some random topics, some in the news, some not in the news.
In this installment of The Geology Flannelcast, the boys talk about Iceland volcanoes, a honey moon hike in New Zealand gone horribly wrong, new evidence that suggests that the asteroid impact was the the sole driver in killing off the dinosaurs, increased earthquake activity in the San Jacinto Mountains in California, and a coccolithophore bloom in the the English Channel.
Links:
Dinosaurs wiped out by asteroid, not volcanoes, researchers say
Newlywed suing Royal Caribbean describes volcano-eruption horror: 'Could feel my skin burning'
Over 4,500 Earthquakes Hit Iceland as Volcano Shows Sign of Eruption
Channeling a Bloom
Natural fluid injections triggered Cahuilla earthquake swarm
This week's episode is a live stream. We talk about predicting earthquakes, mantle superplumes (aka LLSVP), and the Paleocene-Eocene Thermal Maximum (PETM)
We have a lot going on in this week’s installment of the Geology Flannelcast. Our guest this week is Chris Conwell. Chris is a Ph.D. candidate at THE Ohio State University and he studies ancient glacial activity on Earth nearly 450 million years ago. Also, Ryan Thornburg (Jesse’s brother) stops by and we determine once and for all if Jesse and Ryan really didn’t go swimming for a whole summer in 1992 because it was too cold due to the eruption of Mt. Pinatubo in 1991. And if that wasn’t enough… we also cover a huge tanzanite discovery and the end Permian extinction event.
Here’s a bonus episode for this week because we were late getting our regularly scheduled episode out. We cover current events in geology like the 7.5 magnitude earthquake this week in Mexico, a giant dust storm moving across the Atlantic Ocean, microbes that may live in impact craters, and a mega-blob under New Zealand.
Desmond O'Brien joins the Geology Flannelcast this week. Desmond works in the United States and Canada as a mineral prospector for gold, silver, and zinc.
Alex Brittingham joins the Geology Flannelcast this week to talk about geological techniques used in the field of archaeology. Alex is currently a Ph.D. candidate at the University of Connecticut and studies how Neanderthals used fire.
This week Chris Sparacio joins the Geology Flannelcast to talk about the oil and gas industry. Chris is currently a PhD student at University of Connecticut and previously worked in the oil and gas industry for 10 years. Jesse talks about methane hydrates, landslides, and failed black holes.
Shannon Star George is a licensed Professional Geologist (PG) with ten years experience in geological consulting. She discusses career opportunities for licensed PG's and Geologists-In-Training (GIT), how to qualify and prepare for the the Fundamentals of Geology and Practice of Geology examinations to obtain your GIT certification and PG license. We also talk about the Great Unconformity during Jesse's Corner.
No guests this week. The guys talk about current events like the new largest shield volcano on Earth, hurricanes, the migrating North Pole, and reproducibility in geologic studies.
Tim Davis is a geology instructor at Temple University. He talks about dinosaurs and Mt. St. Helens this week.
Jesse’s Corner Mt. St. Helens isn’t where it should be. Scientists may finally know why.
Kelly Blake is a structural geologist who works in the geothermal energy field. She talks about the 2019 Ridgecrest, CA earthquake.
Bill Lukens is an Assistant Professor at James Madison University in Virginia. He studies paleosols and works to reconstruct Earth's ancient climate
The 5th edition of listener question. Jesse introduces a new show segment called Jesse's Corner.
It's the return of the Geology Flannelcast! After a four year hiatus, we're back. No topic to hold us back. Just ranting and raving about geology.
We're back from our summer hiatus! We bring to you Listener Questions 4.0!
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In this episode of the Geology Flannelcast, we discuss what exactly is a granite countertop by definition and the difference between industrial granite and geological granite. We also cover some potentially overblown health issues associated with granite countertops.
In this episode of the Geology Flannelcast, we cover the topic of soil and how geologists can use soils that have turned into rock to determine ancient climates
This episode of the Geology Flannelcast is all about river deltas. We cover everything from the different types of deltas, to how to sediment of a delta builds, to what happens to the river water as it flows out of the delta.
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We're back from our brief hiatus! This episode of the Geology Flannelcast discusses Milankovitch Cycles, which are the main drivers of Earth's climate.
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Good friend of the Flannelcast, Matt Sophy, is back on the show to talk about the geothermal energy field and his work in Indonesia. Matt took the image above at one of his test sites in Indonesia.
Here's some more images that Matt gave us to post on the site.
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It's volume 3 of listener questions! We answer the questions from you, the listener!
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In this episode of the Geology Flannelcast we talk about a new theory as to what took out the dinosaurs and discuss megatsunamis and the possibility of one occurring along the U.S. east coast. Jesse also dives into what is real and fake about Indiana Jones.
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Examples of the dark linear features on Mars where flowing water was confirmed to have existed. Image: NASA
NASA confirmed that there is flowing water on Mars this week. Flowing water was always speculated to have existed on the Red Planet, but this is the first time scientists have confirmed its existence. In this episode of the Geology Flannelcast, we break down how they found the flowing water and why it is so important.
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This installment of the Geology Flannelcast covers Pluto, ancient viruses, and the ABC's of climate change.
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This episode of the Geology Flannelcast takes you through 4.6 billion years of Earth history. We tackle how the geologic time scale came to be, how it's broken down, and what it all means.
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In this installment of the Geology Flannelcast, the gang tackles the topic of Greenland's melting ice sheet. The uncover fact, fiction, and controversy.
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