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Re: Report Sez Volcanic Gases Killed The Dinosaurs



>when exactly was chron 30N?


palaeomag normal zone 30N begn approximately 67.7Ma, and ended 66Ma. It is 
succeeded by 29R which crosses the KT boundary. The base of 30N precedes the 
base of both the Hell Creek and Lance Fms (and hence the onset of the 
"lancian").

D.




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