Guest Video: Why Do Volcanoes Erupt?


That is the look on your face after glancing out the window and seeing your cornfield erupting.


https://youtu.be/NCYFlutw1Ko&rel=0

This 2023 video by Mexico’s National Autonomous University is in Spanish, but it has lots of good footage of the eruption and a size comparison as the cone grew.



That’s Parícutin, in the amazing Michoacán-Guanajuato volcanic field.

It’s monogenetic, meaning that Parícutin is unlikely to ever erupt again.

As Oregon State’s Volcano World notes, “A monogenetic field is kind of like taking a single volcano and spreading all its separate eruptions over a large area.”

They use Parícutin as an example in this animated TED talk on why volcanoes erupt:


https://youtu.be/LQwZwKS9RPs&rel=0

1942 — 1943, per all sources, including this one, but the rest of this jives with what I have read.


They mention water entering the mantle in a subduction zone, and you might be wondering where this zone is, inland in central Mexico.

It’s down there — just a little weird (jargon alert).


Most of us, of course, aren’t thinking “Why?” when a volcano goes off nearby.

If we’re thinking at all — and we definitely should be thinking! — it’s the “what” of it that we’re focused on:


Some lagniappe:


https://youtu.be/_uEfmQt34Nc&rel=0



Featured image: Dionisio Pulido, the cornfield’s owner. (Image: San Diego History Center.)



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