[SunkenCiv]

The shift of the magnetic pole is going on right now, the north pole has moved many miles since I was learning the compass offset in Boy Scouts. The reason there's a magnetic pole shift idea may pertain to the fact that the "fossil" magnetism preserved in old lava flows doesn't show a slow change. This suggests to me that the event that caused the shift also caused a lot of volcanic activity -- or caused just the volcanic activity, freezing the magnetic pole where it was for a brief time.

Large changes of the earth's magnetic fields in historical times
by William R. Corliss
Science Frontiers #22: Jul-Aug 1982

By measuring the magnetic properties of bricks and other accurately dated human artifacts, geophysicists can reconstruct the history of the local magnetic field. Near Loyang, China, the field was as much as 54% higher in 300 A.D. than it is now. It was 15% higher in 1500 A.D. In 1000, it was less than today's value.

(Wei, Q.Y., et al; "Intensity of the Geomagnetic Field near Loyang, China, between 500 BC and AD 1900," Nature, 296:728, 1982.)

Comment. Direct measurements of the earth's field go back only a few hundred years, but they are consistent with the data reconstructed from artifacts, both showing a steady decrease since 1500. No one has estimated the effects of these substantial changes on radiocarbon dating and, perhaps, human biology.

[doc1019]

Also, from what I read, this process takes thousands, if not, millions of years.

[Jack Hydrazine]

The north pole used to move about five miles per year. Now it is moving toward Siberia at 35 to 40 miles per year. The strength of the Earth’s magnetic field is bottom out in 2015.

A pole flip just might be in progress.