TÁC 40*Ar/39Ar 36Ar/40Ar x103 39Ar/40Ar x100 37Ar/39Ar x100 %39Ar Cumul. % Atm. Age (Ma) ± (Ma) 500 8.325 1.6327 0.0621 0.000 0.538 48.25 237.5 42.9 550 0.939 2.6378 0.2348 0.000 8.873 77.95 28.4 2.9 600 0.963 1.1434 0.6873 0.000 17.465 33.79 29.1 1.8 650 0.943 1.0020 0.7462 0.000 30.299 29.61 28.5 0.7 700 0.916 0.6258 0.8898 0.000 40.696 18.49 27.7 2.1 750 0.966 0.4768 0.8890 0.000 48.763 14.09 29.2 1.6 800 0.856 0.7408 0.9125 0.000 65.157 21.89 25.9 1.2 850 0.828 0.8147 0.9169 0.000 76.259 24.07 25.1 2.2 900 0.872 0.6485 0.9267 0.000 87.708 19.16 26.4 1.6 950 0.802 0.7493 0.9705 0.000 95.128 22.14 24.3 2.4 1200 0.789 1.0937 0.8573 0.000 100.00 32.32 23.9 2.0