Thanks John,

We used McPhee's, Assembling California in my geology class. I have Bolts 4th Edition I believe and during the time I was reading it he answered an important question for me. I had been reading some information on the net where there was finger pointing at the USGS for not installing portable seismometers near Loma Prieta, prior to the 1989 quake, citing loss of potentially useful data. However, Bolt told me that if they had done so, the quake would have rendered them disabled anyway and they would not have been of any use.

Tonight I was researching Ragnar Stefanson and I found once again learning something interesting about someone else during the process and that led me to reading about shear wave splitting. However, the middle of the night is not the best time cover such a heavy subject, so I'll have to save it for another night. LOL

Sometime I shall have to do some research about you and your work and I'll probably learn something I never intended to and be glad for having taken the road less traveled, as I have so many times in the past.

I have been up late of late at Casa de Petra in my attempts to catch Pepe the Peeper doing his middle of the night sojourn. One night I shall have to set his pants afire (and then he can say he truly had hot pants) tell him I have no water and let him squirm. Its that or give him the airhorn in the ear followed by a goodly dose of tear gas/pepper spray combo which might be interesting to watch as well. I have plans for him he never dreamed or imagined.

As Gilda Radner said, "if it ain't one thing, it's another, but it's always something."

Petra