Oogonia research

[Tim Barrows]

From: Stephen B. DeVogel <devogel at colorado.edu>    (Please reply to 
Steve directly)

I am seeking sediment samples containing fossil charophyte oogonia. 
In particular, I am hoping to find a series of samples taken from a 
core or from an outcrop of lacustrine sediments, which contain 
oogonia.  Often, a core will have a single oogonia-bearing stratum, 
but this makes paleoclimate research difficult.  Ideally, there would 
be samples which cover most of the Holocene with an oogonia-rich 
layer every 1000 years.  I do not require an extreme abundance of 
sample material, only about 15 or so well-preserved oogonia per 
layer. 
Currently, I am working toward my M.S. degree with Gifford Miller at 
the University of Colorado.  My experience is with amino acid 
geochronology and paleothermometry.  I intend to test the validity of 
charophyte oogonia as paleoclimate indicators using amino acid 
racemization data.  A robust chronology between samples can be 
established by calibrating amino acid geochronology with 14C dating. 
And once I understand the biochemical kinetics of oogonia, I will be 
able to calculate paleothermometry. 

If you have any information concerning the availability of samples 
for my research, please send messages to devogel at colorado.edu.  Also 
note that I will be in Australia from mid-June until mid-August this 
winter in case you would like to meet.

Cheers,
	Steve

Stephen B. DeVogel
INSTAAR and the Department of Geological Sciences
University of Colorado
Boulder, CO 80303
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.anu.edu.au/mailman/private/aqualist/attachments/20010510/1fddedc2/attachment.htm