On: In theory, rocks from Oman could store hundreds of...

[skosch]

Well, there is a solution to that: border tax adjustments.

Carbon taxes — and I mean at the well, not those bureaucratic, corruption-prone cap-and-trade schemes – are the simplest, cheapest, fastest way to get a carbon-free economy off the ground. And if you make them revenue-neutral, you can get conservatives on board as well (look up "fee and dividend").

[graeme → skosch]

How would you make it work in practice? Would every country sign a global accord to tax oil wells, coal mines, etc?

Or would you have an import tax on such materials? How exactly would you adjust taxes at the border?

I also think this is the best solution, but I'm not exactly sure how you'd implement it without loopholes.

[skosch → graeme]

Yes, import taxes would be the temporary solution. This is my go-to resource: https://citizensclimatelobby.org/carbon-fee-and-dividend/