Episode 141 - Supercontinents

The Common Descent Podcast

Common Descent

Science, Education, Earth Sciences, Natural Sciences, Science:natural Sciences

4.8 • 764 Ratings

🗓️ 12 June 2022

⏱️ 134 minutes

🔗️ Recording | iTunes | RSS

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Summary

Perhaps you’ve heard of Pangaea, the supercontinent that existed when our modern continents were puzzle-pieced together. But have you heard of Rodinia? Or Columbia? Scientists have only come to realize in the last few decades that supercontinents are a recurring feature of our planet. This episode, we discuss what counts as a supercontinent, what evidence they leave behind, and the various ways they impact just about every other feature of our planet as they continuously come together and break apart. In the news: croc resilience, American cheetahs, dome-headed giraffoids, and traveling termites. Time markers:Intro & Announcements: 00:00:00News: 00:05:00Main discussion, Part 1: 00:43:00Main discussion, Part 2: 01:14:30Patron question: 02:03:30 IT’S CROC MONTH! Check out our Croc Month activities on our social media, Discord, and Patreon! We recently made a guest appearance on Third Pod From the Sun, where we discussed the K-Pg mass extinction! https://thirdpodfromthesun.com/2022/06/10/extinctions-dinosaurs-a-big-rock-andclimate-change/ Check out our blog for bonus info and pictures:http://commondescentpodcast.wordpress.com/ Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp Find merch at the Common Descent Store! http://zazzle.com/common_descent Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev Follow and Support us on: Twitter: https://twitter.com/CommonDescentPCFacebook: https://www.facebook.com/commondescentpodcastInstagram: @commondescentpodcast YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduwPodBean: https://commondescentpodcast.podbean.com/ iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2 You can email us at commondescentpodcast(at)gmail.comOr send us physical mail at:The Common Descent Podcast1735 W State of Franklin Rd. Ste 5 #165Johnson City, TN 37604 The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org. Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0http://creativecommons.org/licenses/by/3.0/

Transcript

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0:00.0	You're listening to the Common Descent Podcast.
0:19.0	Hello, Will. Hello, David.
0:21.2	Hello, Internet.
0:22.7	And welcome to episode 141 of the Common Descent podcast.
0:28.0	This is a podcast about paleontology, evolution, earth, and life history.
0:32.8	Today's topic is supercontinents.
0:36.0	Supercontinents.
0:38.0	Just like that.
0:42.0	A lot of people, I'm sure, are familiar with the concept of Pangia.
0:56.7	The recent time back during the Mesozoic and a little bit earlier than that, where all of our modern continents, most of them at least, were joined together into one supercontinent, which we call Pangaea, but that's not the only one.
0:58.4	Yeah, this has happened other times.
1:01.8	There is, in fact, a supercontinent cycle.
1:08.4	So, in this episode's discussion, we will talk about what a supercontinent is, how we study supercontinants in the past, and what the history of continents coming
1:14.2	together and splitting apart has looked like across the history of our planet.
1:18.9	Do they follow the same cycle as the avatar, or it's fire, then air, then water?
1:23.9	Gondwana, Laresia, long ago, the four nations lived in harmony.
1:29.3	So we will go through all that information.
1:31.5	It'll be a nice tour through some geologic history and some biologic history of Earth.
1:37.6	But on top of it being cool, it was also requested.
1:40.4	Oh.
1:41.1	This topic was suggested to us by Ryan, Alexander, Brett, and Jackie.
1:47.3	Good requests.
	...

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