Episode notes
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 are classroom-ready to help you teach Earth science. Check them out! Support the show
Podcast
GEO Podcast
Gary Lewis, GEOetc.com · Tech & Science · English
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
More from GEO Podcast All episodes →
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S5 · E73 · 29 Mar 2024 · 6 min
Three reasons why civilizations grew up around volcanoes
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 Members Section - Over 100 teaching resources that are classroom-ready to help you teach Earth science. Check them out! Support the show
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S5 · E72 · 21 Mar 2024 · 6 min
Salt Weathering
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 close to the ocean, but also in salt-rich soils, etc. Visit our GEOetc Members Section - Over 100 teaching resources that are classroom-ready to help you teach Earth science. Check them out! Support the show
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S5 · E71 · 19 Jan 2024 · 8 min
Current Iceland Volcanic Activity 101
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 to Plate Tectonics. Support the show
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S4 · E70 · 22 Dec 2023 · 5 min
Fake & Pseudo Fossils
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 science. Come and check out all we have to offer at GEOetc.com Support the show
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S4 · E69 · 16 Dec 2023 · 6 min
Where does magma come from?
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 classroom-ready to help you teach Earth science. Check them out! Support the show Support the show
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S4 · E67 · 23 Jun 2023 · 7 min
Bowens Reaction Series
In this episode I talk about Bowen's Reaction Series - and how it tells us the order of crystallization of minerals from molten rock. Support the show
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S4 · E66 · 16 Jun 2023 · 7 min
Earth's Major Systems
The Earth is a huge system made up of a number of 'spheres' - the geosphere, hydrosphere, cryosphere, atmosphere, and biosphere. What are each of these spheres and how can they interact? This episode explains each sphere and gives examples of the interaction between them. Visit our GEOetc Members Section - Over 100 teaching resources that are classroom-ready to help you teach Earth science. Check them out! Support the show
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S4 · E65 · 9 Jun 2023 · 6 min
Buying a rock (geologic) hammer
In this episode, I talk about the things to consider when buying a geologic hammer - what to look for and the decisions you will need to make. You can find this information and more in my blog post about buying a forever hammer. Visit our GEOetc Members Section - Over 100 teaching resources that are classroom-ready to help you teach Earth science. Check them out! Support the show
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S4 · E64 · 2 Jun 2023 · 7 min
Earth's largest volcano erupts - Mauna Loa 2022
In this episode, I talk about the recent eruption of Mauna Loa on the Big Island of Hawaii. The eruption was in 2022 and lasted just two weeks - but produced massive around of lava. Come and join us in Hawaii, or on any of our field adventures. See here for the trips for educators and here for the trips for geocachers. Visit our GEOetc Members Section - Over 100 teaching resources that are classroom-ready to help you teach Earth science. Check them out! Support the show
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S4 · E63 · 26 May 2023 · 6 min
Have I found gold? Simple tests to find out!
In this episode, I talk about the three common minerals that fool people into thinking they have found gold - pyrite, chalcopyrite, and mica. I talk about the simple tests you can do to find out if what you found was really gold or one of these three. Visit our GEOetc Members Section - Over 100 teaching resources that are classroom-ready to help you teach Earth science. Check them out! Support the show
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