GEO Podcast

Microfossils

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

Shale - and how we use it

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

Sandstone - quartz, arkose and lithic

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

Apparent Polar Wandering & Plate Tectonics

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

Seeing Inside the Earth

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 fi

Tectonic Plates - Lithosphere, Moho, Asthenosphere

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 t

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 erupti

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 chan

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, th

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

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

All about limestone

In this episode, I talk about the different forms of limestone and how they form including chalk, coquina, fossiliferous limestone, travertine, and oolitic limestone.  

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

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

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 informat

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 aro

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 tes

Hawaii - why I love taking people to visit the volcanoes

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&apos

The 5 Great Extinctions

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 ha

Graptolites

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 c