As a big fan and collector of impact craters on meteorites, I'd enjoy hearing opinions on how they formed. In the MPOD, Bernd Pauli left the following comment:" according to Buchwald (1975), the shrapnel pieces with their ragged surfaces generally fell in the forward part of the fall ellipse and had no time to become flight-oriented but sufficient velocity to form large impact holes. When they broke up a second time upon impact with the ground, they formed these ragged, bombshell-like fragments."
The key to determining how they formed (at least with flight oriented specimens) is the presence of fusion crust on the inside of the crater as discussed in http://www.meteorites.com.au/features/impactpits.html. Seems like shrapnel is more difficult to figure out. Thoughts and theories? Regards, Mendy -----Original Message----- From: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of valpar...@aol.com Sent: Friday, February 24, 2012 3:00 AM To: meteorite-list@meteoritecentral.com Subject: [meteorite-list] Meteorite Picture of the Day Sikhote Alin http://www.tucsonmeteorites.com/mpod.asp ______________________________________________ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list ______________________________________________ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
