Quote Originally Posted by apb View Post
Grumpy,

I'm not finding anything on the 25k year cycle. Those numbers seem right for some reason, just don't know why. I did dig up a few things on Archaeomagnetic Dating:

http://www.mnsu.edu/emuseum/archaeol...g/dat_mag.html
http://www.museum.state.il.us/progra...ratory_008.htm
http://www.nmarchaeology.org/archaeo...aboratory.html

Andrew
Interesting reading! Thanks for the links.