GEO Podcast

<p>In this episode, I talk about the structure of a tectonic plate and introduce the terms crust, mantle, lithosphere, moho discontinuity, and asthenosphere.<br/><br/><br/>You can find the GEO podcast on iTunes right...

<p>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...

<p>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...

<p>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...

<p>In this episode, I talk about fake fossils and why people create them, as well as pseudo fossils such as dendrites.<br/><br/>Visit our GEOetc Members Section - Over 100 teaching resources that are classroom-ready to...

<p>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?<br/><br/>Visit our GEOetc Members Section - Over 100...

<p>In this episode, I talk about the different forms of limestone and how they form including chalk, coquina, fossiliferous limestone, travertine, and oolitic limestone. </p><p> </p><p>Visit our GEOetc Members Section...

<p>In this episode I talk about Bowen's Reaction Series - and how it tells us the order of crystallization of minerals from molten rock.</p><p>Support the show</p>

<p>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...

<p>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...

<p>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.</p><p>Come and join us in Hawaii...

<p>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...

<p>In this episode, I talk about the four reasons I just love to take people on tours around the volcanoes in Hawaii. It is about the accessibility of seeing the planet's largest and most active volcanoes and...

<p>In this episode, I talk about the five great extinction events - events in which more than 70% of species on Earth become extinct. When did these occur and what might have caused each event.</p><p>Visit our GEOetc...

<p>In this episode, I talk about the extinct colonial animal we call graptolites. These are fascinating fossils as they not only show an evolutionary trend that goes from complex to simple, but their wold-wide...