Sorry about the confusion, the values are around minus 15 per mil and there is no possibility of marine influence.... Bjoern -- Björn Wissel, PhD EQAL Manager, Faculty of Science Adjunct Professor, Department of Biology 265.2 Laboratory Building University of Regina Regina, SK S4S 0A2 Canada phone 306 585-4890 fax 306 337-2410 e-mail [log in to unmask] www.uregina.ca/biology/faculty/Wissel/Wissel.html