[Phithagoras]

Phys.org often bumbles headlines (and implications) a bit, but I like to use it as a stepping stone to the original paper (which I likely wouldn't have heard of otherwise).

Sadly the authors paper isn't easily found on the public internet for free but the abstract [1] describes coupling an idealized ophiolite obduction model with a carbon box model, giving δ13C predictions that align with known examples of cooling in rock record. As you rightly point out, this doesn't replace well studied phenomena like Milankovich cycles, but it does suggests there's more the the story. I have to say I'm not terribly surprised though, weathering of (ultra)mafic rocks has been examined as a sequestration method for at least 5 years [2] but it's still kind of neat to see models matching the rock record.

[1] https://www.nature.com/articles/s41561-023-01342-9 [2] https://www.sciencedirect.com/science/article/pii/S187661021...