Dear Isogeochemists, working on shallow marine environments, I am looking for modern measurements concerning the change of sea water isotopic composition (carbon, oxygen) due to the mixing with river waters. E.g. how far off the coast of South America and up to which water depth can the admixture of Amazon river waters be registered isotopically? Any advice on published data either on the influence of the Amazon river or on any other river system is highly appreciated. Michael Joachimski *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* Dr. Michael M. Joachimski Institut fuer Geologie und Mineralogie Universitaet Erlangen Schlossgarten 5 91054 Erlangen Germany Voice: +49-9131-8522699 (office) Voice: +49-9131-8529297 (lab) Fax: +49-9131-8529295 [log in to unmask] http://www.geol.uni-erlangen.de/html/staff/joachims.html http://www.geol.uni-erlangen.de/html/Masspec/masspec.html *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*