Joe McCormick

speaker

4,384 appearances 9 recordings 1 series first heard Sep 2026 last heard yesterday

Joe McCormick’s voice in public audio — every appearance, attributed to the second.

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recordings per month · last 12 months

Recordings per month over the last 12 months — 9 in all, peaking in Sep 2026 with 9.

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Stuff To Blow Your Mind · From the Vault: The Wallace Line, Part 2 · 22 Sep 2026 podcast

Globe. voice-verified

It was only a little more than 30 million years ago that Sahul actually broke away from the landmass that would become Antarctica. voice-verified

And Sahuul after that slowly drifted north and then collided with the continental plates of Southeast Asia, giving us the arrangement of islands that we see today in Indonesia and the Malay archipelago. voice-verified

And some of the islands we see uh in that archipelago were uh were created by the collision. voice-verified

They were voice-verified

Raised up. voice-verified

Um, but again, at the place where the plates collide, we get a subduction zone and a deep ocean trench, which means even though the islands are now close, land bridges never form between Bali and Lombok. voice-verified

So even though they have been close now for millions of years, there is relatively little interchange of large land animals back and forth. voice-verified

However, there is some interchange, and as we've discussed already, all faunal boundaries are to some extent permeable, and studying those crossover examples can tell us even more about how this boundary works. voice-verified

I'm gonna come back to that in a bit, but Rob, I think you also had some good stuff about how this interacts with plate tectonics. voice-verified

Ah yeah. voice-verified

We did a couple of episodes on that. voice-verified

Go back and look 'em up. voice-verified

Uh they're voice-verified

sometime last year. voice-verified

God love a lost continent. voice-verified

We may have also talked about them in a series of episodes we did, I think starting with um the the L Tanin antenna, where we were talking about the you how people take uh anomalous underwater imagery that kind of looks interesting and then kind of run wild with it, deciding that, oh, it this thing underwater is uh is got to be an alien antenna, and actually it's probably a sponge, and uh this other thing has got to be evidence of Atlantic. voice-verified

Santis when actually it's probably a rock. voice-verified

middle. voice-verified

That's funny because it would be trying to explain actually what is evidence for continental drift or plate tectonics. voice-verified

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