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Andrew Walker

Do we tell each other about our fun new on here? It’s great to see “powering Earth’s ancient dynamo with silicon precipitation”, (doi.org/10.1029/2022GL100692). Fred Wilson leads an ‘all star team’ (thanks ) to combine mineral physics and thermal history modelling to look at a possible way to explain observations of an early magnetic field on Earth.

@a_walker Very cool! I seem to recall a paper a few years ago about silicate melts generating the ancient magnetic field in the lower mantle (when it was still molten)… I thought this was related to that at first, but no - we’re back in the core!

@allochthonous yep - I think that’s still on the list of possibilities but I don’t recall much follow up. I could well have missed something though.

@a_walker Very intriguing title. Look forward to reading this from #AGUpubs.