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>> “Heat from Earths core could be underlying force in plate tectonics” <<
Vaporware and circular reasoning combine to release brain farts as “science.”
The heat of the Earth’s core has to be the result of friction. There isn’t a nuclear reactor buried down there.
There is U-238, U-235 and Thorium.
There are, however - I presume - massive quantities of radioactive isotopes of long half-life. Heavy elements, molten and blended together, the heaviest of them predominating 4000 miles down.No doubt assumptions could be made that would allow the development of a model of conditions there . . .