Don, you did it again!
Every time you come up with all this neat, interesting info., my chores keep getting further behind!
This time you steered me toward an area I can understand with out getting so confused I don`t even know what I`m reading. I`m much more comfortable around mapping and geography than I am with p-waves, strike/slip, thrust, and all the other phrases you much more knowledgeable people keep throwing around.
It may be some time time before I understand much about the various -waves, but I`m slowly improving.
Byron