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Table 3 Age data for the multiple aliquots of basaltic rock using the modified protocol

From: Improvement of 40Ar/39Ar age determinations for Quaternary basaltic rocks by eliminating the peak suppression effect

 Previous protocol Modified protocol
Sample IDCa/KCl/KMol 39Ar (× 10−15)%40Ar*Age (Ma)± 1SDsample IDCa/KCl/KMol 39Ar (× 10−15)%40Ar*Age (Ma)± 1SD
564-012.833− 0.0320.0426.20.240.07642-012.974− 0.0280.0369.00.340.04
564-022.4810.1190.029101.73.070.03642-023.033− 0.0460.0364.50.190.04
564-032.6320.0210.029101.53.670.03642-032.956− 0.0340.0373.90.150.04
564-042.217− 0.0110.03027.41.370.17642-043.045− 0.0130.0395.60.170.05
564-052.245− 0.0840.0309.90.360.12642-053.048− 0.0730.0353.00.110.04
564-062.197− 0.0080.02820.80.820.17642-062.7390.0230.0666.90.210.03
564-072.5810.0130.0313.90.140.09642-075.7910.4750.0036.30.590.36
564-082.343− 0.0450.03118.80.730.12642-082.8220.0070.0744.20.170.03
564-092.121− 0.0230.03012.20.470.16       
564-102.4480.0150.03414.30.540.12       
564-112.301− 0.0120.03115.20.550.13       
   Weighted mean (Ka)431   Weighted mean (Ka)191
   ± 1sd20 (56.2%)   ± 1sd50 (27.5%)
   MSWD8.00   MSWD2.50