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new ideas on the K/T
Just read the paper by Greg Retallack on palaeosols across the K/T.
Retallack says that he can't find much of a change in the environment
across the boundary. The only change is a loss of some of the flora
and fauna (dinos that is :). He also states that the soils that form
the barren zone 2m. below the iridium spike were too acidic to
preserve bone and this preservational bias may be affecting our veiw
of the K/T event.
Retallack, G.J., 1994. A pedotype approach to latest K and earliest T
paleosols in eastern Montana. Geol. Soc. Am. Bull., vol 106,
GABHAN PETTIGREW If you can't fool all of the people
Sgl3GP@Cardiff.ac.UK all of the time, then we should be
Cardiff University breeding them for stupidity (Cerebus)