87Sr/86Sr and 143Nd/144Nd ratios of GSJ rock reference samples; JB-1a, JA-1 and JG-1a.

Abstract

We have measured 87Sr /16 Sr and 143Nd / 144Nd ratios for the GSJ rock reference samples JB-la, JA-1 and JG-la. The results are as follows; 87Sr/86Sr ratio, JB-la, 0.7040830.000016 (2a, Number of runs is nine), JA-1, 0.7035070.000016 (N=2), JG-la, 0.7109730.000014 (N=3); 143Nd/'44Nd ratio, JB la, 0.5127840.000011 (N= 1), JA-1, 0.5130650.000010 (N= 1), JG-la, 0.5123770.000019 (N= 1).