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RE: Deccan produced global warming that was over before the K-T boundary



>>

The decline mentioned above (which ends a steady state)starts near the end of 
magnetic chron 30N, is gradual, and ends some 100,000 years before the K-T 
boundary; superimposed on the new steady state a very narrow and extremely high 
respectively deep spike occurs at the boundary. The spike is ascribed to the 
meteorite*, the decline to the major episode of Deccan volcanism. During the 
decline global temperatures are higher than before and afterwards; temperatures 
return to normal when the decline ends and do not change around the K-T 
boundary. 

* At the same time a huge spike in the total amount of osmium and of course 
iridium occurs. The mass extinction also happens at this time.

<<

David, could you please clarify a bit on the above statements? I'm having 
trouble interpreting exactly what you mean by "... superimposed on the new 
steady state a very narrow and extremely high respectively deep spike occurs at 
the boundary. The spike is ascribed to the meteorite*, the decline to the major 
episode of Deccan volcanism."

Thanks a bunch.
Kris