Hi Herb - I probably should have expressed this a different way.
It's the time BEFORE the LPBE, the sizes of the parent bodies, and the mechanisms of their formation and differentiation. thanks much anyway, and all the best, ep --- Herbert Raab <[EMAIL PROTECTED]> wrote: > > E.P. Grondine writes: > > I suppose that ultimately this may all go back to > > whether or not Jupiter occupied its current orbit > > before the LPBE (Late Period Bombarment Event) - > my > > guess is that it did not. > > As far as I can say, the location of Jupiter's orbit > during > the Late Heavy Bombardment (if it has changed at > all) has no > influence on the meteorid streams we see today. > Meteorid > streams "live" for a few Ma beore they are disrupted > by > perturbations from the planets, whilst the Late > Heavy > Bombardment ended ~3.8 Ga ago. If a > Pribram/Neuschwanstein > Meteoroid Stream really exists, then it probably > traces back > to a much younger event. > > There are some great simulations of colliding rubble > pile > asteroids at this web site: > > http://www.astro.umd.edu/~dcr/Research/rubble.html > > When looking at these animations, just think of one > rubble pile > asteroid made of H-type material, and of the other > made of > E-chondrites: At the end, you get a new rubble pile, > where H- > and E-type material is mixed, plus a number of H- > and E-type > fragments that escape. These fragemnts will probaly > share similar > orbits - in other words, the form an meteorid stream > that includes > both H and E-type material. > > Enjoy the animations... ;^) > > Greetings, > Herbert > > > ______________________________________________ > Meteorite-list mailing list > [EMAIL PROTECTED] > http://www.pairlist.net/mailman/listinfo/meteorite-list __________________________________________________ Do you Yahoo!? New DSL Internet Access from SBC & Yahoo! http://sbc.yahoo.com ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
