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xkcd #3141: Mantle Model
(imgs.xkcd.com)
Title text:
Mantle plumes explain Hawaii, Yellowstone, Iceland, the East African Rift, the Adirondack uplift, the Permian extinction, the decline of Rome, the DB Cooper hijacking, and the balrog in Moria. Those little hills of sand in your yard are caused by antle plumes.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3141/
And I imagine we don't have great methods for manipulating subatomic particles... Quarks and such don't have magnetic charges, they're probably hard to control as well as probably unstable on their own. So as a result I'd wager it's hard to run experiments with those.