Didn't take me as long as I thought. Unless you want more reputable links...

Milankovitch Cycles
http://en.wikipedia.org/wiki/Milankovitch_cycles

Magnetic Polarity Reversal
http://en.wikipedia.org/wiki/Magnetic_polarity_reversal

Plate Tectonics
http://en.wikipedia.org/wiki/Plate_tectonics

Mid-Oceanic Ridges
http://en.wikipedia.org/wiki/Midocean_ridge
This one has an animation of magnetic striping towards the bottom of the page.

Gads, ya gotta love wikipedia. However, also note that you have to judge the validity and accuracy of the information for yourself.

Hope these can be of some help. I have textbooks from my geography courses, but refuse to scan them due to copyright issues.

General Question: If I cut/paste a URL in a reply, do these forums automatically convert them into a link? Other forum boards I visit do this. Just don't know about these.

rmfr