Baker Canyon
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step
P (W)
t (min)
40Ar/39Ar
38Ar/39Ar
37Ar/39Ar
36Ar/39Ar
39Ar (mol)
%40Ar*
40Ar*/39ArK
Age (Ma) +sAge (an)
Cl/K
Ca/K
2
4
1
9.673
0.015
1.59E-02
1.17E-04
2.65E-14
99.0
9.603
92.4±0.3
5.92E-04
0.032
3
4
1
10.97
0.027
7.73E-03
1.24E-03
3.94E-14
96.1
10.57
101.4±0.3
3.88E-03
0.016
5
4
1
12.46
0.028
8.09E-02
1.20E-02
1.67E-14
71.0
8.877
85.6±0.5
3.44E-03
0.163
7
4
1
10.18
0.019
1.79E-02
1.23E-03
5.14E-14
95.9
9.781
94.0±0.3
1.50E-03
0.036
8
4
1
10.62
0.017
4.52E-02
1.32E-03
2.04E-14
95.8
10.20
98.0±0.4
1.00E-03
0.091
9
4
1
9.417
0.019
2.16E-01
1.59E-03
1.52E-14
94.4
8.931
86.1±0.4
1.54E-03
0.437
10
4
1
10.01
0.021
5.26E-02
2.05E-03
2.75E-14
93.4
9.376
90.2±0.3
1.93E-03
0.106
11
4
1
10.15
0.016
2.82E-02
3.91E-04
4.19E-14
98.3
10.00
96.1±0.3
7.00E-04
0.057
12
4
1
9.451
0.014
3.68E-03
2.35E-04
3.95E-14
98.6
9.345
90.0±0.3
1.68E-04
0.007
14
4
1
9.855
0.035
2.37E-01
1.06E-03
2.24E-14
96.4
9.528
91.7±0.3
5.97E-03
0.479
15
4
1
10.52
0.020
3.30E-03
1.07E-03
1.25E-14
96.2
10.17
97.7±0.5
1.87E-03
0.007
16
4
1
10.42
0.015
6.92E-02
1.73E-03
4.70E-14
94.6
9.879
95.0±0.3
5.42E-04
0.140
17
4
1
10.35
0.015
-2.52E-03
3.95E-04
2.65E-14
98.3
10.20
98.0±0.3
4.74E-04
-0.005
18
4
1
11.25
0.023
2.24E-01
6.32E-03
6.79E-15
82.6
9.367
90.2±1.0
2.49E-03
0.453
19
4
1
9.990
0.015
2.87E-02
1.31E-03
3.51E-14
95.5
9.569
92.1±0.3
3.60E-04
0.058
20
4
1
10.23
0.018
2.28E-03
5.33E-04
5.16E-14
97.9
10.04
96.5±0.2
1.26E-03
0.005
21
4
1
10.22
0.018
-5.53E-03
6.87E-04
1.76E-14
97.3
9.977
95.9±0.4
1.29E-03
-0.011
22
4
1
10.38
0.017
3.31E-02
-3.54E-05
3.19E-14
99.5
10.36
99.5±0.3
9.97E-04
0.067
24
4
1
9.566
0.018
1.78E-01
6.55E-04
3.13E-14
97.6
9.353
90.0±0.3
1.19E-03
0.359
25
4
1
10.12
0.013
1.28E-01
3.04E-04
2.25E-14
98.6
10.00
96.1±0.3
4.62E-05
0.258
26
4
1
10.29
0.015
-5.67E-03
2.65E-04
5.94E-14
98.6
10.18
97.8±0.5
5.23E-04
-0.011
27
4
1
10.85
0.030
4.64E-03
1.29E-03
4.08E-14
95.9
10.43
100.1±0.4
4.71E-03
0.009
28
4
1
9.457
0.016
2.32E-01
1.09E-03
3.01E-14
96.2
9.120
87.8±0.2
8.21E-04
0.468
29
4
1
9.719
0.016
-1.54E-03
2.40E-04
5.70E-14
98.7
9.611
92.5±0.2
8.30E-04
-0.003
30
4
1
10.46
0.016
2.94E-02
1.46E-03
2.65E-14
95.3
9.999
96.1±0.3
7.08E-04
0.059
31
4
1
9.815
0.015
1.26E-01
6.92E-04
2.77E-14
97.4
9.586
92.2±0.2
3.89E-04
0.254
32
4
1
10.14
0.019
2.20E-01
1.28E-03
6.17E-14
95.8
9.742
93.7±0.4
1.46E-03
0.444
33
4
1
9.826
0.020
1.34E-02
5.95E-04
6.22E-14
97.5
9.614
92.5±0.4
1.85E-03
0.027
34
4
1
9.584
0.027
2.58E-01
1.03E-03
2.06E-14
96.4
9.269
89.2±0.3
3.91E-03
0.522
35
4
1
10.19
0.016
6.71E-03
2.55E-04
4.38E-14
98.7
10.08
96.9±0.3
7.59E-04
0.014
37
4
1
10.13
0.014
1.12E-02
4.62E-04
4.71E-14
98.1
9.961
95.7±0.2
7.14E-05
0.023
38
4
1
10.40
0.013
-1.64E-03
2.46E-04
3.51E-14
98.7
10.29
98.8±0.3
-6.19E-05
-0.003
39
4
1
9.931
0.016
9.11E-02
1.19E-03
2.68E-14
95.9
9.550
91.9±0.6
6.94E-04
0.184
40
4
1
10.44
0.015
2.37E-02
8.07E-04
4.77E-14
97.2
10.17
97.7±1.8
3.68E-04
0.048
41
4
1
10.09
0.014
2.84E-03
3.40E-04
3.62E-14
98.4
9.951
95.6±0.3
2.27E-04
0.006
42
4
1
10.37
0.019
9.70E-02
3.66E-03
3.40E-14
89.1
9.267
89.2±0.3
1.46E-03
0.196
43
4
1
10.08
0.018
2.26E-01
1.03E-03
1.37E-14
96.4
9.763
93.9±0.5
1.17E-03
0.456
44
4
1
10.23
0.015
-4.54E-04
5.62E-04
3.13E-14
97.8
10.03
96.3±0.2
5.73E-04
-0.001
45
4
1
10.05
0.016
3.12E-02
3.49E-04
6.22E-14
98.4
9.916
95.3±0.2
6.68E-04
0.063
46
4
1
10.09
0.013
-1.12E-03
1.07E-06
3.59E-14
99.4
10.06
96.6±0.3
3.47E-06
-0.002
48
4
1
10.23
0.019
1.25E-01
1.42E-03
2.74E-14
95.4
9.785
94.1±0.2
1.57E-03
0.253
49
4
1
10.85
0.026
7.09E-02
4.30E-03
3.11E-14
87.8
9.555
91.9±0.6
3.22E-03
0.143
51
4
1
10.31
0.017
9.85E-03
8.40E-04
4.39E-14
97.0
10.03
96.4±0.2
9.45E-04
0.020
52
4
1
9.704
0.014
1.01E-01
7.77E-04
1.95E-14
97.0
9.448
90.9±0.3
2.81E-04
0.204
53
4
1
9.524
0.016
1.13E-01
9.52E-04
4.07E-14
96.5
9.217
88.7±0.3
7.62E-04
0.228