I have a theory that meteor collision(s) started the outer crust spinning at a slightly different speed than the inner core, which gives us our magnetic field.
And the ‘springy’ action as it oscillates back and forth gives us the CHANGING magnetic field
Mars might have had the same conditions, but after friction caused the oscillations to die away (like a swinging door slows and stops), the magnetic field went away and the solar winds evaporated all the water off the surface.
If earth isn’t flat, why are there “plates”? Do you see any plates on a spherical orange? No, you only have those damn plates on the flat table.
If the core of the Earth is sufficiently massive, it would rotate at its own speed. Inertia would be enough to explain the outer mantle and crust turning at a different speed. Similarly, the poles would try to turn slightly faster than the equator causing plate tectonics through Coriolis forces. Observing the rotational behavior of the sun and Jupiter is proof that such a thing is possible, at least insofar as the outside of a planet is concerned. The core of the Earth is composed of iron and some heavy elements and is very dense. The magma above is hot and somewhat fluid providing lubrication between the solid crust and the core, and allowing them to rotate at different speeds.
From what I understand a lot of water is required for plate tectonics.
I have a theory. Plate tutonics cause global warming.
Hey, don’t laugh. It’s as valid as “fossil “ fuels cause globull warming.
5.56mm
When the Sudbury event happened, I read there was a large chunk of the NA plate that was actually flipped over, just like a pancake!
Or not