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Phil Bigelow wrote:
> To claim that the K-T boundary clay is everywhere a lag deposit is
> analogous to claiming that there was a world-wide catastrophic flood.
> (and we don't want to go there).
Why not go there?. Major catastrophic flooding (though not as a single
event) could be expected to continue for quite some time after the
event. Note that I'm not implying that the boundary clay is everywehre
a lag deposit; I'm adressing a somewhat different issue.