Re: Best mines to visit
Posted by Bodie the Dog on February 03, 2003 at 12:14:13:
In Reply to: Re: Best mines to visit posted by Seismo on February 03, 2003 at 11:39:15:
Sounds like a good theory, but you sure you're not pulling our collective legs? Don't seismic pulses also propogate through the air? Which is why one can sometimes hear the P-wave?
I've heard caves last as long as they do because the earth is generally moving big chunks of land at the same time. Unless the cave happens to be in the actual fracture zone, it just moves up and down like a boat in ocean swells.
Ok, where's the real experts when we need them?