[sjastro]

Originally Posted by renormalised

Can you get access to any geological maps of the area you live in?? If you have one, and a topo map on which you can mark where you found the rock it's a fairly easy matter of transposing one to the other and identifying where the rocks lie w.r.t. one another. It'll give you a better idea also of where the faults occur and how many faults there are in the area. If there is a major one 3km away, there will be others around.

I'll see what I can do.

Thanks

Steven