1998 Volume 32 Issue 5 Pages 345-350
87Sr/86Sr and 143Nd/144Nd ratios for twelve GSJ rock reference samples (GSJ-RRS), together with the chemical standards NBS987, La Jolla and JNdi-1, have been measured on a MAT262 mass spectrometer in the Department of Geology, Niigata University. Measurements of five to nine aliquots for each GSJ-RRS gave small standard deviations of both Sr and Nd isotopic ratios.