Jim, there are shock veins and slickensides. They are not the same thing. They are result of shock but not melting like the full melt veins are. I have hundreds of pieces with slickensides. I am traveling so I can't show photos. Perhaps later. Michael Farmer
Sent from my iPhone On May 21, 2013, at 12:19 PM, Jim Wooddell <[email protected]> wrote: > Hi Jim Baxter, > And, that is what I am not seeing. I'am going to be a very hard sell on the > term slickensides until I see something that scientifically supports it and > why it is there. Do the threads actually appear and are they threads?? > In my mind, the coming apart part would not create a slickenside (cool state) > where as the coming together with great pressure and time would. Just > thinking out loud, not qualified to say one way or the other! > I also see where this appearance is shown lower in topography in it's area > which, to me, would be odd for slickenside. > > Cheers! > > Jim Wooddell > > > > > On 5/21/2013 9:18 AM, Jim Baxter wrote: >> Slickensides are polished surfaces caused by lateral movement along a fault >> plane. In hand specimens they feel rough when you rub your finger in one >> direction and smooth when you rub it in the other. Not sure that test would >> be feasible on the size specimens most of us own. In theory if the fault >> planes represent planes of weakness along which breaks occur then you could >> be seeing both things - slickensides that formed by lateral movement along >> the shock plane when the stone fractured. >> >> Jim Baxter > > ______________________________________________ > > Visit the Archives at http://www.meteorite-list-archives.com > Meteorite-list mailing list > [email protected] > http://six.pairlist.net/mailman/listinfo/meteorite-list ______________________________________________ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
