I discussed the possibility of terrestrial meteorites in Rubin (2015), Icarus 257, 221-229. Neglecting the effects of the Earth's atmosphere, it would take five times as much energy to launch a basaltic rock off the Earth as it would to launch the same mass rock off Mars. Except for Black Beauty, essentially every shergottite has been severely shocked during launch off Mars, transforming the crystalline plagioclase into maskelynite. (A few shergottites with no maskelynite were shocked-heated even more strongly.) A terrestrial basalt launched off Earth would be heavily shocked or completely impact melted. This does not seem to be the case for NWA 13188. I don't think it is terrestrial.
On Wed, Jul 12, 2023 at 4:36 PM Mark Hammergren via Meteorite-list <[email protected]> wrote: > > Thirty years ago, my thesis advisor, Don Brownlee, and I talked about > potential terrestrial meteorites and how their "asteroids" might be > identified among the population of near-Earth objects. Unfortunately for me > at the time, we decided that any strong identification would rely on details > of silicate chemistry that are tough to measure through ground-based remote > sensing. But we were certain that such bodies must exist. > > On the same subject, the moon will be a great place to search for terrestrial > meteorites, and may prove to be the best place to investigate the conditions > of early Earth. Heck, we might even find fossils. > > On Wed, Jul 12, 2023, 12:27 PM Bob King via Meteorite-list > <[email protected]> wrote: >> >> Mike, >> >> Go to >> https://www.researchgate.net/publication/361365963_Northwest_Africa_13188_A_meteorite_from_the_Earth >> At the top click on the blue bar that says download full text pdf. I just >> did it and no fee is required. >> >> Bob >> >> On Wed, Jul 12, 2023 at 9:12 AM Michael Farmer via Meteorite-list >> <[email protected]> wrote: >>> >>> Unfortunately paywall >>> >>> >>> Sent from Yahoo Mail for iPhone >>> >>> On Wednesday, July 12, 2023, 2:05 AM, Albert Jambon via Meteorite-list >>> <[email protected]> wrote: >>> >>> There was a presentation at the Goldschmidt Conference in Lyon this week. >>> Here is a link >>> >>> >>> >>> https://www.newscientist.com/article/2381928-meteorite-left-earth-then-landed-back-down-after-round-trip-to-space/ >>> >>> >>> >>> Albert JAMBON >>> >>> ______________________________________________ >>> Meteorite-list mailing list >>> [email protected] >>> https://pairlist2.pair.net/mailman/listinfo/meteorite-list >>> >>> ______________________________________________ >>> Meteorite-list mailing list >>> [email protected] >>> https://pairlist2.pair.net/mailman/listinfo/meteorite-list >> >> ______________________________________________ >> Meteorite-list mailing list >> [email protected] >> https://pairlist2.pair.net/mailman/listinfo/meteorite-list > > ______________________________________________ > Meteorite-list mailing list > [email protected] > https://pairlist2.pair.net/mailman/listinfo/meteorite-list -- Alan Rubin Institute of Geophysics and Planetary Physics Department of Earth, Planetary, and Space Sciences University of California 3845 Slichter Hall 603 Charles Young Dr. E Los Angeles, CA 90095-1567 USA office phone: 310-825-3202 fax: 310-206-3051 e-mail: [email protected] website: http://cosmochemists.igpp.ucla.edu/Rubin.html ______________________________________________ Meteorite-list mailing list [email protected] https://pairlist2.pair.net/mailman/listinfo/meteorite-list
