"Edward Green" wrote in
ups.com:

Thomas Palm wrote:

That's something I've never investigated. It sounds plausible (pot
calls kettle black) on the surface -- there's a lot of iron down
there, and you've got some differential heating and some spinning and
some tidal effects and .... viola! Out pops a current!

Actually, it doesn't sound all that plausible.

Do I misunderstand you? You make a fair description of how the Earth's
dynamo generates the magnetic field, so why do you then claim it doesn't
sound plausible?