magnetites, the old earth's ally

A question:In the big picture of geologic history, does the Earths magnetic field indeed periodicly reverse, or is it just a matter of variations from minimums to maximums?Moose------------------
BS degree, geology, '83
Professor, geology, Whatsamatta U
Old Earth evolution - Yes
Godly creation - Maybe

The current issue (August 2002) of Discover magazine has the cover story "Nuclear Planet". It explores the theory that the earth has a substantial uranium core, the nuclear reaction of which, amongst other things, drives the magnetic field of the earth.It also has some discussion of the scientific communities shunning of radical ideas.Moose

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Originally posted by minnemooseus:
The current issue (August 2002) of Discover magazine has the cover story "Nuclear Planet". It explores the theory that the earth has a substantial uranium core, the nuclear reaction of which, amongst other things, drives the magnetic field of the earth.

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It also has some discussion of the scientific communities shunning of radical ideas.

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Moose

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It's been a while since I read the article, but my recollection is that the nuclear model claims to have a strength in explaining the variations in the earth's magnetic field.In brief, the reaction products that accumulate function as moderators of the reaction. They can slow or even stop the reaction; then as these moderating products disperse, the reactions can increase or restart. The magnetic field varies as the nuclear reactions vary.This is getting quite far out on the fringe of the creation/evolution debate, but I give it a bump, to see if I can get a comment out of Joe Meert.Moose[This message has been edited by minnemooseus, 08-15-2002]