Step N° |
40*Ar/39Ar |
36Ar/40Ar x1000 |
39Ar/40Ar x100 |
37Ar/39Ar x100 |
%39Ar Cumul. |
% Atm. |
Age (Ma) |
+- (Ma) |
|---|---|---|---|---|---|---|---|---|
| 1 | 0.000 | 3.6218 | 1.3930 | 0.000 | 0.106 | 104.93 | 0.0 | 0.0 |
| 2 | 3.178 | 0.6604 | 0.2640 | 0.000 | 0.210 | 19.90 | 92.4 | 7.7 |
| 3 | 2.580 | 0.0385 | 0.3848 | 0.000 | 2.215 | 1.56 | 75.4 | 0.8 |
| 4 | 1.778 | 0.0555 | 0.5553 | 0.000 | 4.358 | 2.09 | 52.3 | 0.7 |
| 5 | 1.544 | 0.0000 | 0.6514 | 0.000 | 22.286 | 0.29 | 45.5 | 0.2 |
| 6 | 1.160 | 0.0000 | 0.8603 | 0.000 | 28.697 | 1.08 | 34.3 | 0.2 |
| 7 | 1.128 | 0.0000 | 0.8812 | 0.000 | 33.696 | 1.42 | 33.4 | 0.3 |
| 8 | 1.222 | 0.0000 | 0.8096 | 0.000 | 37.068 | 1.93 | 36.1 | 0.4 |
| 9 | 1.215 | 0.0000 | 0.8174 | 0.000 | 41.235 | 1.59 | 35.9 | 0.2 |
| 10 | 1.178 | 0.0000 | 0.8450 | 0.000 | 46.293 | 1.34 | 34.8 | 0.2 |
| 11 | 1.178 | 0.0000 | 0.8461 | 0.000 | 51.916 | 1.21 | 34.8 | 0.2 |
| 12 | 1.117 | 0.0000 | 0.8934 | 0.000 | 58.344 | 1.12 | 33.0 | 0.2 |
| 13 | 1.069 | 0.0000 | 0.9326 | 0.000 | 64.905 | 1.14 | 31.6 | 0.2 |
| 14 | 1.081 | 0.0000 | 0.9173 | 0.000 | 69.178 | 1.73 | 32.0 | 0.2 |
| 15 | 1.125 | 0.0000 | 0.8842 | 0.000 | 74.422 | 1.36 | 33.3 | 0.3 |
| 16 | 1.079 | 0.0000 | 0.9095 | 0.000 | 77.106 | 2.72 | 31.9 | 0.4 |
| 17 | 1.121 | 0.0872 | 0.8720 | 0.000 | 79.419 | 3.03 | 33.2 | 0.4 |
| 18 | 1.113 | 0.0000 | 0.9032 | 0.000 | 100.00 | 0.35 | 32.9 | 0.1 |