: To interject a notion....is it possible that our esteemed collegue is
: thinking of a shift in the magnetic pole? I seem to recall that magnetic
: pole shift occurs rather regularly....in fact...isn't that a method used
: to measure continental drift? That is ...observe the magnetic alignment
: of the lava extruded from the midocean rifts....
The symmetric alternation...in magnetic alignment...around the Mid-Atlantic
Ridge...is a way to detect seafloor spreading...but I don't believe it's
regular enough...that is periodic enough...to be used as a clock.
Anton Sherwood *\\* +1 415 267 0685 *\\* DASher@netcom.com