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GEO Podcast

by Gary Lewis, GEOetc.com

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Latest episodes

Microfossils

February 7, 2025 · 9 min

You can find the GEO podcast on iTunes right here. You can also find GEO Podcast or all the major podcast capture platforms! (Go on...subscribe and do not miss the new episodes) In this episode, I talk about the major types of microfossils…
Shale - and how we use it

January 31, 2025 · 6 min

You can also find GEO Podcast or all the major podcast capture platforms! (Go on...subscribe and do not miss the new episodes) In this episode, I talk about shale, some major types, and how humans have used shale over time. Visit our…
Sandstone - quartz, arkose and lithic

January 24, 2025 · 6 min

You can find the GEO podcast on iTunes right here. You can also find GEO Podcast or all the major podcast capture platforms! (Go on...subscribe and do not miss the new episodes) In this episode, I talk about sandstone and what the sand…
Apparent Polar Wandering & Plate Tectonics

January 17, 2025 · 5 min

You can also find GEO Podcast or all the major podcast capture platforms! (Go on...subscribe and do not miss the new episodes) In this episode, I explain what apparent polar wandering curves are and how the information was then used to…
Seeing Inside the Earth

September 30, 2024 · 10 min

In this episode, I explain how seismic waves are used to see the internal structure of the Earth including the crust, mantle, outer core, and inner core. You can also find GEO Podcast or all the major podcast capture platforms! (Go…

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Tectonic Plates - Lithosphere, Moho, Asthenosphere

September 11, 2024 · 4 min

In this episode, I talk about the structure of a tectonic plate and introduce the terms crust, mantle, lithosphere, moho discontinuity, and asthenosphere. You can find the GEO podcast on iTunes right here. You can also find GEO Podcast or…
Three reasons why civilizations grew up around volcanoes

March 29, 2024 · 6 min

In this episode, I talk about the three reasons why people and civilizations grew up around active volcanoes. Why did people need to live close to the dangers of eruptions? What was it that drove and kept them there? Visit our GEOetc…
Salt Weathering

March 21, 2024 · 6 min

In this episode, I talk about how salt acts as a physical weathering agent to break down rocks. Physical weathering is the breaking down of rocks without a chemical change, and salt can act as the agent that breaks down rocks especially…
Current Iceland Volcanic Activity 101

January 19, 2024 · 8 min

In this episode, I explain in simple terms what is happening in Iceland these last few years on the plate boundary. I explain the two geological phenomena in Iceland, the recent eruptions and earthquake activity, and how they are related…
Fake & Pseudo Fossils

December 22, 2023 · 5 min

In this episode, I talk about fake fossils and why people create them, as well as pseudo fossils such as dendrites. Visit our GEOetc Members Section - Over 100 teaching resources that are classroom-ready to help you teach Earth…
Where does magma come from?

December 16, 2023 · 6 min

In this episode, I talk about how molten rock is formed inside the Earth - what are the mechanisms that cause our planet to produce molten rock to feed volcanoes? Visit our GEOetc Members Section - Over 100 teaching resources that are…
All about limestone

June 30, 2023 · 9 min

In this episode, I talk about the different forms of limestone and how they form including chalk, coquina, fossiliferous limestone, travertine, and oolitic limestone. Visit our GEOetc Members Section - Over 100 teaching resources that…

Full episode archive on Apple Podcasts →

About the show

A place to learn about geology for teachers, students, rock hounds, and geology enthusiasts - that comes out on Fridays!Gary Lewis is an Australian-born geologist who loves to share his passion for all things 'geology'. In the GEO podcast, Gary takes you on a journey to learn about rocks, minerals, earthquakes, volcanoes, glaciers and so much more. It does not matter if you have no experience in geology, Gary will help you to understand the fundamentals of our planet so you can have a greater understanding about when you see when visiting your backyard, your local creek, cliff or beyond. You can also join Gary as he runs Field Adventures (specialist travel experiences) to see parts of the world through the eyes of a passionate Earth scientist. Find out more at www.geoetc.com.