Sample %39Ar 37Ar/39Ar 36Ar/39Ar 40Ar*/39Ar
%40Ar* Age
(Ma) SD
DMS96-25D
18 |
22 |
16 |
15 |
23 |
21 |
19 |
12 |
08 |
24 |
09 |
06 |
04 |
11 |
02 |
01 |
20 |
17 |
05 |
07 |
03 |
10 |
13 |
0.0297 |
0.6573 |
9.376
|
98.0 |
13.38
|
0.34
|
0.0170 |
0.9164 |
9.480
|
97.2 |
13.42
|
0.25
|
0.0166 |
0.2511 |
9.301
|
99.2 |
13.44
|
0.19
|
0.0235 |
0.8172 |
9.480
|
97.5 |
13.46
|
0.50
|
0.0799 |
1.320
|
9.682
|
96.0 |
13.54
|
0.37
|
0.0504 |
0.4054 |
9.431
|
98.8 |
13.57
|
0.33
|
0.0145 |
0.3837 |
9.440
|
98.8 |
13.59
|
0.45
|
0.0565 |
8.467
|
11.83 |
78.9 |
13.59
|
0.45
|
0.0421 |
0.4599 |
9.499
|
98.6 |
13.64
|
0.57
|
0.0269 |
0.4095 |
9.496
|
98.7 |
13.66
|
0.76
|
0.0062 |
0.2408 |
9.476
|
99.3 |
13.70
|
0.19
|
0.0134 |
0.5490 |
9.567
|
98.3 |
13.70
|
0.33
|
0.0159 |
2.953
|
10.29 |
91.5 |
13.72
|
0.24
|
0.0093 |
0.2350 |
9.492
|
99.3 |
13.73
|
0.61
|
0.0151 |
1.582
|
9.907
|
95.3 |
13.75
|
0.37
|
0.0546 |
0.7170 |
9.651
|
97.8 |
13.76
|
0.19
|
0.0149 |
-0.0925 |
9.425
|
100.3 |
13.77
|
0.29
|
0.0188 |
2.354
|
10.15 |
93.2 |
13.78
|
0.45
|
0.0475 |
0.6270 |
9.643
|
98.1 |
13.78
|
0.24
|
0.0137 |
1.410
|
9.894
|
95.8 |
13.81
|
0.51
|
0.0122 |
4.890
|
10.94 |
86.8 |
13.84
|
0.27
|
0.0111 |
0.3537 |
9.663
|
98.9 |
13.92
|
0.29
|
0.1462 |
4.122
|
10.94 |
89.0 |
14.18
|
0.78
|
Weighted
Mean = 27.9 ±36.8
Plateau Age = 13.664 ±0.096
Irradiation Data
(39Ar/37Ar)Ca
= 0.00070±0.00005 |
|
(36Ar/37Ar)Ca = 0.00026±0.00002 |
|
(38Ar/39Ar)K = 0.0119 |
|
(40Ar/39Ar)K = 0.0002±0.0003 |