this post was submitted on 19 Apr 2025
273 points (99.3% liked)

xkcd

10683 readers
522 users here now

A community for a webcomic of romance, sarcasm, math, and language.

founded 2 years ago
MODERATORS
 

The biggest expense was installing the mantle ducts to keep the carbonate-silicate cycle operating.

https://explainxkcd.com/3078/

you are viewing a single comment's thread
view the rest of the comments
[–] [email protected] 15 points 2 weeks ago (2 children)

There's no way that's going to hold, right?

[–] [email protected] 45 points 2 weeks ago* (last edited 2 weeks ago) (2 children)

If that picture is to scale, those bolts are ~5km thick. Put enough of them and it should hold.

That said, the crust probably starts crumbling somewhere else creating new mountains or islands

[–] [email protected] 25 points 2 weeks ago (1 children)

After a certain point, the material around the bolt is more brittle than the bolt itself.

[–] [email protected] 16 points 2 weeks ago (3 children)

Often is, but you can alleviate this with large washers like in the picture, and also by adding more bolts closer to eachothers

[–] [email protected] 4 points 2 weeks ago* (last edited 2 weeks ago) (1 children)

Would you say tectonic plates are more like wood or metal? There are different standards for both.

[–] [email protected] 11 points 2 weeks ago

I'd think they're more like cookies, but idk I'm not really a geologist 😅

[–] [email protected] 4 points 2 weeks ago (1 children)

I think double-sided tape would be better. Or maybe we sew the plates together?

[–] [email protected] 2 points 2 weeks ago (1 children)

Drill holes and zip tie the tectonic plates together

[–] [email protected] 4 points 2 weeks ago

Tectonic drift stitches. We'd have so much street cred in the galactic neighbourhood

[–] [email protected] 3 points 2 weeks ago

Too many bolts too close and you’ve just got a perforation.

[–] [email protected] 5 points 2 weeks ago

the crust ... starts crumbling somewhere else creating new mountains or islands

Exactly. The oceanic crust will (in geologic time) crack in front of the bolts and be dragged down parallel to the bit that was bolted, stacking the oceanic crust with the newer bit under the older one.

The cracking and stacking happens naturally and this creates stacks of many oceanic crust sections moving to the left of the picture.

[–] [email protected] 28 points 2 weeks ago (1 children)

At geological timescales everything is a liquid

[–] [email protected] 7 points 2 weeks ago

I took an atmospheric science class in college and the professor described the field as “fast geology”, I like your description though that geology is the study of slow fluids!