See http://pubs.water.usgs.gov/wri014222
to request a copy of this report and to download PowerPoint figures in this
document, which may be useful in the classroom.



                      Pier De Groot
                      <pier.de-groot@ir        To:       [log in to unmask]
                      mm.jrc.be>               cc:
                      Sent by: Stable          Subject:  Re: 13C/12C, 15N/14N variations & H, Li, B, O, Mg, Si, S, Cl, Ca, Cr,
                      Isotope                   Fe, Cu, and Tl isotope-ratio variations
                      Geochemistry
                      <[log in to unmask]
                      UVM.EDU>


                      11/15/2002 09:40
                      AM
                      Please respond to
                      pier.de-groot






Richard,

You might want to look into a recent compilation of references/standards
isotopic values and general isotopic isotopic ranges of specific
terrestrial
materials:

Coplen et al. (2002):
Compilation of minimum and maximum isotope ratios of selected elements in
naturally occuring terrestrial materials and reagents.
Water-Resources Investigations Report 01-4222 by US Dept. of the
Interior/US
Geol. Surv.: 98 pp.

Of course, you can have a look into the somewhat older handbook by Jochen
Hoefs (1997)Stable isotope geochemistry. Springer: 201 pp (4th edition),
giving a good overview of isotopic ranges of different materials on Earth
too.

I hope this is helpful to you,
Pier.

************************************************************************Dr.
Pier A. de Groot
European Commission
Joint Research Centre
Institute for Reference Materials and Measurements (IRMM)
Retieseweg
2440 Geel
Belgium
Tel. +32 (0)14 571 628
Fax +32 (0)14 571 863
e-mail: [log in to unmask]

Visit my WEB-site about my "Handbook of Stable Isotope Analytical
 Techniques" at:
http://users.pandora.be/handbook/index.html
last update: 9 June, 2002.
************************************************************************



************************************************************************Dr.
Pier A. de Groot
European Commission
Joint Research Centre
Institute for Reference Materials and Measurements (IRMM)
Retieseweg
2440 Geel
Belgium
Tel. +32 (0)14 571 628
Fax +32 (0)14 571 863
e-mail: [log in to unmask]

Visit my WEB-site about my "Handbook of Stable Isotope Analytical
 Techniques" at:
http://users.pandora.be/handbook/index.html
last update: 9 June, 2002.
************************************************************************