[Planetary science] Core dynamos

[PB666]

https://www.sciencenews.org/article/magnetic-mystery-center-earth?utm_source=Society+for+Science+Newsletters&utm_campaign=1f82e0832a-editors_picks_week_of_Aug_31_20159_4_2015&utm_medium=email&utm_term=0_a4c415a67f-1f82e0832a-104491029

How much of this might be explained by density sorting of lower melting point metals in the early earth and the infiltration of higher weight melts now, there is also the assumption of uniform heat distibute according to depth, but uranium distributions on the surface are not uniform, sonyou could have inversions of dense uranium pockets that stir upnthe out layers of the dynamo but are turned in the solid core layer surface and diffuse.

Edited September 6, 2015 by PB666