I'm particularly interested in the k-T event because I think it was capable of heaving relatively large chunks onto the Moon. I'm also interested in the significant changes in the types of life forms pre- and post-k-T. In particular, I think that the % of oxygen in the Earth's atmosphere pre-k-T was substantially higher than the 20% or so today. I think that O2 partial pressure might have been 30% or more. My evidence is based upon the oxygen-carrying capacity of the dinosaur circulatory system. Just as an Olympic athlete might utilize EPO to gain an advantage, I think that the dinosaurs had a natural athletic advantage (relative to today's mammals) in the form of a higher O2 partial pressure. At 02:55 PM 2/19/2015, Marc LeBrun wrote:
="Henry Baker" <hbaker1@pipeline.com> The k-T stuff from Earth has been compromised by later DNA, RNA, microbial stuff. And it wouldn't have been stored in a deep freezer.
The stuff that got to the Moon would have been flash-frozen, and if the pieces were in big enough chunks, there could be really well-preserved organic material deep inside the chunks.
Oh I think I see -- you're interested in well-preserved old organic samples, the fact that they were sampled at the k-T time is just a accident.
(Heh, does your interest have anything to do with the recent real estate speculation on Isla Nublar?)