Alternatively, if a 10 m tree were buried in 10 years, that would mean 1000 km in a million years or 10 000 km in 10 million years (i.e. the duration of the coal measures). This is equally ridiculous and we cannot escape the conclusion that sedimentation was at times very rapid indeed and at other times there were long breaks in sedimentation, though it looks both uniform and continuous" 1 Walker added the emphasis.
Ref 1 Ager, D.V., The New Catastrophism, Cambridge University Press, p. 49, 1993.