(Click here for a Complete Data Set in Excel 4.0 format)

Data Summary for acksp
E= 47.68 ± 1.16(kcal/mol) log(Do/ro^2)= 4.89 ± 0.30(1/sec) J= .007715

Temp. time % 40Ar* 39Ar % 39Ar* age ± 1sd log(D/r^2) ± 1sd log(r/ro)
(C) (min) -- (E-14 mol) released (Ma) (1/sec) --
450 20 1.936 3.33 0.08 53.0 ± 43.20 -9.42 ± 4.21 -.05
500 22 13.553 6.37 0.22 100.9 ± 10.33 -8.59 ± 3.65 0.00
550 21 23.053 14.53 0.55 66.2 ± 3.88 -7.80 ± 3.70 0.01
500 27 7.006 1.90 0.60 41.7 ± 17.02 -8.62 ± 2.95 0.01
600 15 39.510 25.25 1.17 66.6 ± 1.29 -7.05 ± 4.74 0.00
500 45 0.758 1.43 1.21 6.0 ± 38.02 -8.65 ± 2.18 0.03
650 24 57.877 80.24 3.04 72.5 ± 0.45 -6.37 ± 3.35 -.01
700 20 76.422 115.41 5.67 70.8 ± 0.48 -5.82 ± 3.73 0.00
700 37 87.881 82.56 7.56 70.7 ± 0.41 -6.05 ± 2.42 0.12
750 14 85.797 71.25 9.18 71.2 ± 0.25 -5.59 ± 4.92 0.15
750 26 91.270 66.10 10.69 71.9 ± 0.43 -5.82 ± 2.94 0.26
800 15 87.511 74.81 12.40 71.7 ± 0.69 -5.46 ± 4.60 0.32
800 25 91.809 68.31 13.96 71.9 ± 0.28 -5.67 ± 3.01 0.42
800 45 89.967 59.99 15.33 72.2 ± 0.74 -5.93 ± 2.07 0.56
800 70 85.695 58.84 16.68 71.1 ± 0.95 -6.09 ± 1.74 0.64
750 15 66.509 2.41 16.73 82.5 ± 4.59 -6.79 ± 4.58 0.75
700 30 65.309 1.02 16.75 112.4 ± 2.66 -7.47 ± 2.61 0.82
650 567 30.448 5.05 16.87 74.7 ± 10.50 -8.05 ± 1.46 0.82
850 34 84.799 59.99 18.24 71.3 ± 0.73 -5.73 ± 2.41 0.67
900 16 79.651 62.97 19.68 72.5 ± 1.07 -5.35 ± 4.32 0.68
900 30 90.964 65.81 21.18 73.8 ± 0.39 -5.57 ± 2.61 0.79
950 12 79.663 64.64 22.65 72.1 ± 0.73 -5.15 ± 5.62 0.76
950 28 89.664 86.99 24.64 72.7 ± 0.29 -5.36 ± 2.73 0.86
1000 14 85.132 90.29 26.70 74.7 ± 0.27 -5.00 ± 4.87 0.85
1000 30 87.534 116.17 29.35 72.6 ± 0.33 -5.19 ± 2.59 0.95
1000 50 86.164 116.21 32.01 73.0 ± 0.47 -5.37 ± 1.92 1.04
1000 73 85.367 105.23 34.41 74.4 ± 0.49 -5.54 ± 1.66 1.12
950 10 77.914 4.30 34.51 84.9 ± 4.06 -6.05 ± 6.67 1.21
900 16 57.836 2.39 34.56 72.1 ± 7.60 -6.51 ± 4.31 1.26
850 41 86.697 1.83 34.61 126.4 ± 17.51 -7.03 ± 2.13 1.32
1050 15 81.013 54.31 35.85 73.2 ± 0.87 -5.12 ± 4.57 1.07
1050 32 81.600 81.08 37.70 74.1 ± 0.33 -5.25 ± 2.47 1.13
1100 12 79.656 83.67 39.61 74.6 ± 0.42 -4.79 ± 5.61 1.05
1100 20 77.759 84.47 41.54 73.7 ± 0.66 -4.99 ± 3.54 1.14
1100 32 79.296 97.20 43.76 75.0 ± 0.52 -5.11 ± 2.46 1.21
1100 47 79.697 102.65 46.10 75.4 ± 0.57 -5.23 ± 1.96 1.27
1050 10 78.248 9.71 46.32 84.5 ± 3.37 -5.57 ± 6.66 1.29
1000 16 61.798 5.11 46.44 71.7 ± 4.65 -6.05 ± 4.31 1.38
950 25 25.033 2.46 46.49 38.9 ± 14.63 -6.56 ± 2.96 1.47
850 550 31.674 6.27 46.64 80.4 ± 4.67 -7.50 ± 1.41 1.55
1100 72 83.739 98.84 48.89 75.2 ± 0.23 -5.41 ± 1.65 1.35
1100 104 57.345 112.01 51.45 76.2 ± 0.32 -5.49 ± 1.51 1.40
1100 168 80.572 130.19 54.42 75.4 ± 0.20 -5.60 ± 1.43 1.45
1100 170 81.857 105.53 56.83 76.2 ± 0.36 -5.67 ± 1.45 1.48
1100 535 73.889 236.08 62.22 76.3 ± 0.29 -5.77 ± 1.37 1.54
1100 487 82.871 138.75 65.39 76.4 ± 0.23 -5.92 ± 1.43 1.61
1100 920 82.770 178.56 69.47 76.3 ± 0.26 -6.04 ± 1.43 1.67
1200 26 90.467 320.39 76.78 76.0 ± 0.18 -4.15 ± 2.87 0.98
1300 24 91.409 604.51 90.59 76.1 ± 0.18 -3.60 ± 2.97 0.93
1550 15 84.067 408.56 99.90 77.9 ± 0.20 -2.69 ± 4.36 0.93
1550 15 35.046 3.76 99.99 111.7 ± 9.79 -2.98 ± 1.25 1.08