The Impact Crater which Triggered the Ice Age; Eltanin Crater

The trigger of the planet's most recent ice age was a massive impact event. Approximately 2.5 million years ago, a massive asteroid slammed into the ocean off the western coastline of Chile, forming a 35 kilometer or 22 mile wide crater. Its formation generated towering megatsunamis several hundred meters tall which would go on to effect areas ranging from Mexico to Australia. If not for this ancient event, the ice age may have never happened. This video will discuss this massive impact crater and how it formed.

Thumbnail Photo Credit: Google Earth, Data SIO, NOAA, U.S. Navy, NGA, GEBCO, Data LDEO-Columbia, NSF, NOAA

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Graphics of eruption dates are courtesy of the Global Volcanism Program, Smithsonian Institute. https://volcano.si.edu/

Google Earth imagery used in this video: ©Google & Data Providers

0:00 Megalodon Shark
0:28 A Minor Mass Extinction
0:50 Eltanin Impact Crater
1:42 Asteroid Origin
2:26 Asteroid Impact
3:37 Temperature Feedback Loop

Citations:
[1] G. Collins & others, "A numerical assessment of simple airblast models of impact...", Meteoritics & Planetary Science, https://doi.org/10.1111/maps.12873 (2017), CC BY 4.0

Creative Commons Licenses:
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