There is no collagen in enamel.

Noreen Tuross
Laboratories of Analytical Biology
National Museum of Natural History
Smithsonian Institution
4210 Silver Hill Road
Suitland, MD 20736
(301) 238-3700 ex 113

>>> [log in to unmask] 10/24/03 06:53 AM >>>
Dear List Members

I am looking for a lab (preferably UK based) that can extract collagen
from tooth enamel and conduct carbon and nitrogen isotope analysis on
the extracted collagen. The number of samples I am looking at doing is
in the region of 90. If anybody can perform the analyses, or knows of a
lab that can, I would be extremely grateful if you can drop me a line.

Cheers Steve

Dr Stephen Grimes
Lecturer in Environmental Radioactivity
School of Earth, Ocean and Environmental Sciences
Room A422 Portland Square
University of Plymouth
Plymouth
Devon
Pl4 8AA
UK

Office. Room B513 Portland Square
Telephone. 01752 232457
Fax. 01752 232406
e-mail. [log in to unmask]


-----Original Message-----
From: Noble Jacob [mailto:[log in to unmask]]
Sent: 24 October 2003 06:35
To: [log in to unmask]
Subject: [ISOGEOCHEM] a simple question

Dear list members,

I have a few wells in a  deep confined coastal sandstone aquifer in
India.
These wells are about 10-15 km away from the coast and are showing the
influence of tides. Piezometric levels of these wells are a few metres
below msl. Interestingly, all these waters are fresh and show no sign of
seawater intrusion. C-14 values indicates that they are very old waters.

Could someone give me a hint, what exactly happening in this aquifer
system?

Thanks in advance

regards

Noble



Noble Jacob
Scientific Officer
Isotope Hydrology Section
HIRUP, Bhabha Atomic Research Centre
Trombay, Mumbai - 400 085
INDIA