Re: paleonet Fwd: NYTimes.com Article: A Stark Explanation for MankindFrom an Unlikely Rebel

["Bruno R.C. Granier" <bgranier@xxxxxxxxxxxxxxx>]

Regarding the P/T:
I attended recently a meeting where a Chinese coleague displayed a slide
illustrating the P/T boundary at its "type-locality" somewhere in the
Sichuan (?) basin. I was really surprized (I was not the only one) to see
that it falls in the middle of a limestone bed thought some obvious
sedimentary changes take place below (in addition, there were not much
paleontological evidences to support such a choice). Obviously there is no
event in this type-section. It looks like people selected the median part of
the bed to make sure of the continuity of the sedimentary record (in
accordance to a "certain" rule!)! Which is not the case at the K/T boundary
for instance!
There are geochimical, even paleontological, and obviously sedimentological
evidences to define the boundary at a sedimentary break taking place below
this bed (there is possibly a missing time-record but "nobody is perfect").
I welcome more information on this particular sub-topic ...
Cheers,
B.G.

----- Original Message -----
From: "Peter Ward" <argo@u.washington.edu>
To: <paleonet@nhm.ac.uk>
Cc: <PaleoNet@ucmp1.Berkeley.edu>
Sent: Monday, September 24, 2001 7:49 PM
Subject: Re: paleonet Fwd: NYTimes.com Article: A Stark Explanation for
Mankind From an Unlikely Rebel


> I worked on (and am in) this series.  Episode 3 (tomorrow night) profiles
> extinction.  There are some wonderful images of the P/T boundary in the
> Karoo desert of South Africa, as well as images of late Permian
> dicynodont skeletons from the South African Museum in Cape Town.  This
> episode is rich in fossil content.
>
> Professor Peter D Ward
> Dept of Geological Sciences
> 206-543-2962  ( Office )
> 206-543-1190  ( Dept Office )
> 206-543-3836  ( Shared Fax )
>
>
>
>