There are several relevant chapters on this topic in:

Clark, I. D., and Fritz, P. (1997). Environmental Isotopes in Hydrogeology.
CRC Press; Boca Raton, 328 pp.

Kendall, C. and McDonnell, J. J. (Eds.), (1998). Isotope Tracers in
Catchment Hydrology, Elsevier Science, Amsterdam, 839 p.

Cook, P. and Herczeg, A.L. (Eds.), (2000). Environmental Tracers in
Subsurface Hydrology, Kluwer Academic Publishers, 529 p.


Some useful links to relevant info on the web are located at:
http://wwwrcamnl.wr.usgs.gov/isoig/isopubs/

--Carol

*******************************************************************************

Carol Kendall                                                        tel:
1-650-329-4576
USGS, 345 Middlefield Road, MS 434           fax: 1-650-329-5590
Menlo Park, CA 94025 USA                    email:[log in to unmask]



                    Ahmed Ayoub
                    <[log in to unmask]        To:     [log in to unmask]
                    ARI.AC.UK>              cc:
                    Sent by: Stable         Subject:     18O and the origin of water
                    Isotope
                    Geochemistry
                    <ISOGEOCHEM@LIST
                    .UVM.EDU>


                    01/25/01 06:34
                    AM
                    Please respond
                    to Stable
                    Isotope
                    Geochemistry





Dear Members,
Although I am working on heavy elements isotopes, recently, I have
been reading a little about lighter elements, and I wonder if
somebody out there can help with the following.

I came across an article where water samples are analysed for (delta)
18O to shed shed light on the origins of the water?!!

I don't know what is meant by the origins of the water, and how could
that be done from the isotopic analysis. If you could help with some
more information, I'll be grateful.

Regards
Ahmed
Dr Ahmed Ayoub
Analytical Group
Macaulay Land Use Research Institute
Craigiebuckler
Aberdeen AB15 8QH
U.K.