Re: [meteorite-list] Slickensides vs Shock Veins Revisited

2007-10-09 Thread Mr EMan
--- Darren Garrison <[EMAIL PROTECTED]> wrote: > it has especially fine "shock veins" that > branch like a little lightning bolt in the stone. Another distinction is that a filled fracture aka "shock vein" will be the same on each side--showing matching halves of any feature it transects. A s

Re: [meteorite-list] Slickensides vs Shock Veins Revisited

2007-10-09 Thread Darren Garrison
On Mon, 8 Oct 2007 19:33:52 -0700 (PDT), you wrote: >Hello Graham, Bernd, list > >While there is no technical definition of a "shock >vein" so far as I know, it is in wide use and I hold >it to be a version of a "healed" fracture I was re-examining with a 20x loupe today an unclassified NWA I've

Re: [meteorite-list] Slickensides vs Shock Veins Revisited

2007-10-08 Thread Mr EMan
Hello Graham, Bernd, list While there is no technical definition of a "shock vein" so far as I know, it is in wide use and I hold it to be a version of a "healed" fracture; healed by the 1) injection or accumulation of adjacent wall melt where the filling material has an origin in high pressure, h