"Claim: Meteorite discovered with signs of life in it"

[mrlynn]

This commenter suggests that if not fake, the 'fossil' diatom was probably originally ejected from Earth, perhaps from the Chesapeake Bay impact some 35 million years ago. Here's his post:

dlgriscom says:
January 15, 2013 at 12:14 pm wrote:
I believe there is a near consensus that if Wickramasinghe’s sample isn’t a fake, then it must be a meteorite from the Earth. (I think that most of us agree that the red rains are red herrings).

Meteorites from the Earth are regarded to exist but are believed by these authors as unlikely to ever be recovered:
Gladman, B. J., Burns, J. A., Duncan, M., Lee, P., and Levison, H. F.: The exchange of
impact ejecta between terrestrial planets, Science, 271, 1387-1392, 1996.
DOI:10.1126/science.271.5254.1387

If there were to be any meteorites from the Earth, it has been deemed likely that some of them would have originated with the Chesapeake Bay impact ca. 35.5 Ma:
Faucett, P. J., and Boslough, M. B. E.: Climatic effects of an impact-induced equatorial debris ring, J. Geophys. Res. 107 (D15), 4231-4249, 2002. doi:10.1029/2001JD001230.

There are diatomaceous sands in the impact area of the CB crater.
(general knowledge)

Perhaps the most successful mechanism for putting fragments of the Earth into distant orbits that do not return to the Earth’s atmosphere for ~35.5 m.y. is the jetting phase, wherein ejecta is launched nearly tangentially to the Earth’s surface “at speeds usually faster than the projectile itself.”:
Melosh H. J.: Impact Cratering – A Geological Process, Oxford Monogr. Geol. Geophys
Ser., vol. 11, Oxford University Press, New York, 1989. p.51

So all we have to do now is to find some of these meteorites from the Earth and study them.
And in fact I have found one:
Griscom D L., In plain sight: the Chesapeake Bay crater ejecta blanket, Solid Earth Discuss., 4, 363—428, 2012, http://www.solid-earth-discuss.net/4/363...-2012.html
doi:10.5194/sed-4-363-2012
(Sections 10 and 11 treat jetting-phase ejecta (which didn’t leave the Earth) and a recovered meteorite from the Earth, respectively.)
The link above shows my abstract and permits downloading the full article. However, if you wish to read it I recommend downloading my reader-friendly version (figures inline w/ text) here: http://www.drivehq.com/file/df.aspx/publ...erResearch

/Mr Lynn