Right - the report I cited noted a mass about half that weight (1-1.5 tons) and vertical walls; I could be wrong, but I thought that the determinant had to do with upended strata. If anyone here has the criteria for what determines a crater versus an impact pit, I'd be much obliged - if there is indeed a clear-cut definition. Regards, Jason
On Mon, Oct 26, 2009 at 3:25 PM, Matt Morgan <[email protected]> wrote: > I did some research on Sterlitamak, Russia for a presentation I gave to the > Colorado Scientific Society in late 2008 on Non-Terminal Meteorite Impacts: > The Case for Studying Small Cratering Events. Here is a summary of what I > dug up on Sterlitamak: > -Formed a crater 30 ft wide by 18 ft deep > -Rays of ejecta extended 100 ft from crater > -Blocks of soil and bedrock lined crater walls, 20 in dia. thrown 300 ft. > -Impact breccias at crater floor to depth of 26 ft. > -Impact velocity 2-3 km/sec > -Impactor approx .9 m in dia and weighed 2-3 tons > -Equiv to 1.5-2 tons TNT > > Sounds like a crater to me. I do believe it had an overturned flap of debris > at the rim as well. > > Matt > ---------------------- > Matt Morgan > Mile High Meteorites > http://www.mhmeteorites.com > P.O. Box 151293 > Lakewood, CO 80215 USA > > -----Original Message----- > From: Jason Utas <[email protected]> > Date: Mon, 26 Oct 2009 15:12:22 > To: Ted Bunch<[email protected]>; > Meteorite-list<[email protected]> > Subject: Re: [meteorite-list] Largest 'Fall' Meteorite > > Right, but I don't believe that Campo del Cielo is noted as a > witnessed fall. If we're going to start listing every crater > associated with meteorite fragments, we're going to get a much longer > list. > The only accepted witnessed falls that have led to the formation of > legitimate craters are Carancas and Sikhote Alin. Another list member > suggested Sterlitamak; I still believe that, according to the > description of the impact features found: > > http://adsabs.harvard.edu/abs/1992Metic..27R.276P > > - That this is an impact pit, not a crater. Note the description of > sheer walls, etc. > Regards, > Jason > > On Mon, Oct 26, 2009 at 2:51 PM, Ted Bunch <[email protected]> wrote: >> Rubin de Celis crater of the Campo del Cielo strewn field is a real crater >> - 0.04 km dia with a raised rim. - see Passc Website. >> >> Ted Bunch >> >> >> On 10/26/09 1:48 PM, "Jason Utas" <[email protected]> wrote: >> >>> Yo, >>> Sikhote-Alin, the largest crater at 26m in diameter. >>> Only two meteorites are ever known to have created real craters upon >>> falling; Carancas and Sikhote-Alin. >>> Carancas' crater measures in at 13m. >>> I suppose falls like Gao could have been larger in mass than Caracas, >>> but I don't know if we even have a good estimate of the mass of >>> Carancas, so perhaps someone more knowledgeable about the event could >>> comment; the reports I could find online conflicted drastically. >>> Regards, >>> Jason >>> >>> On Mon, Oct 26, 2009 at 1:32 PM, Greg Stanley <[email protected]> >>> wrote: >>>> >>>> All: >>>> What is the Largest "Fall" known, and what was the size of the crater made? >>>> >>>> Greg S. >>>> >>>>_________________________________________________________________ >>>> Windows 7: It works the way you want. Learn more. >>>> http://www.microsoft.com/Windows/windows-7/default.aspx?ocid=PID24727::T:WLMT >>>> AGL:ON:WL:en-US:WWL_WIN_evergreen2:102009 >>>>______________________________________________ >>>> http://www.meteoritecentral.com >>>> Meteorite-list mailing list >>>> [email protected] >>>> http://six.pairlist.net/mailman/listinfo/meteorite-list >>>> >>>______________________________________________ >>> http://www.meteoritecentral.com >>> Meteorite-list mailing list >>> [email protected] >>> http://six.pairlist.net/mailman/listinfo/meteorite-list >> >> >> > ______________________________________________ > http://www.meteoritecentral.com > Meteorite-list mailing list > [email protected] > http://six.pairlist.net/mailman/listinfo/meteorite-list > ______________________________________________ http://www.meteoritecentral.com Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
