Re: Suspicious impact craters and iridium layers?

[Tim Donovan <uwrk2@yahoo.com>]

I think Wroblewski was referring to sedimentation in
the region throughout the late Maastrichtian.

--- Phil Bigelow <bigelowp@juno.com> wrote:

> Could this explain the deeply-channeled Bug Creek
> beds?  Massive
> post-impact rain storms over the Laramide highlands?
> 
> Some sed. petrologist should look carefully at the
> provenance of the
> mineral constituents of the Bug Creek sandstone and
> search for components
> not commonly seen in the underlying (K) sandstones. 
> Maybe new source
> areas were eroding immediately after the impact.
> 
> <pb>
> --
> 
> 
> On Sat, 18 Jun 2005 07:52:58 -0700 (PDT) Tim Donovan
> <uwrk2@yahoo.com>
> writes:
> > 
> > 
> > --- David Marjanovic <david.marjanovic@gmx.at>
> wrote:
> > 
> > > >  Wroblewski disputed even that, based on work
> in
> > > WY.
> > > 
> > > Interesting. When? How old is his paper?
> > 
> > 
> >  In 2002 he wrote that "The terminal K marine
> > regression was therefore not a continent-scale,
> > eustatic drainage event, but simply the result of
> a
> > massive influx of sediment."
> > 
> > 
> > 
> >             
> >
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> 
> 
> 


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