Data Summary for gr11 K-feldspar
Click Here for a Complete Set of Measurements (in MS Excel 4.0 format)
| E= 51.83 ± 2.12(kcal/mol) | | log(Do/ro^2)= 6.80 ± 0.59(1/sec) | | J= .000000 |
|---|
| 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 | 18 | 25.785 | 0.33 | 0.12 | 0.0 ± 57.73 | -8.99 ± 4.49 | 0.06 |
|---|
| 450 | 23 | 5.824 | 0.19 | 0.19 | 0.0 ± 28.01 | -8.92 ± 3.47 | 0.02 |
|---|
| 500 | 16 | 37.815 | 0.94 | 0.53 | 0.0 ± 23.93 | -7.71 ± 4.56 | -.08 |
|---|
| 500 | 22 | 42.617 | 0.62 | 0.75 | 0.0 ± 7.03 | -7.77 ± 3.46 | -.04 |
|---|
| 550 | 16 | 44.946 | 1.84 | 1.41 | 5.1 ± 4.58 | -6.93 ± 4.47 | -.02 |
|---|
| 550 | 20 | 60.694 | 1.29 | 1.87 | 6.7 ± 1.29 | -7.00 ± 3.67 | 0.02 |
|---|
| 600 | 15 | 50.383 | 3.57 | 3.15 | 9.1 ± 1.31 | -6.25 ± 4.68 | 0.04 |
|---|
| 600 | 21 | 71.100 | 2.82 | 4.17 | 8.4 ± 0.46 | -6.33 ± 3.51 | 0.08 |
|---|
| 650 | 15 | 55.475 | 6.48 | 6.50 | 9.4 ± 0.71 | -5.66 ± 4.65 | 0.09 |
|---|
| 650 | 21 | 84.578 | 4.82 | 8.23 | 9.2 ± 0.21 | -5.80 ± 3.48 | 0.16 |
|---|
| 700 | 16 | 73.623 | 9.13 | 11.51 | 10.0 ± 0.12 | -5.28 ± 4.36 | 0.22 |
|---|
| 700 | 20 | 88.455 | 5.40 | 13.45 | 9.3 ± 0.19 | -5.50 ± 3.58 | 0.33 |
|---|
| 750 | 17 | 77.758 | 8.80 | 16.61 | 9.7 ± 0.11 | -5.14 ± 4.11 | 0.43 |
|---|
| 750 | 22 | 88.737 | 4.77 | 18.33 | 9.4 ± 0.22 | -5.45 ± 3.29 | 0.59 |
|---|
| 800 | 16 | 72.992 | 6.43 | 20.64 | 9.8 ± 0.17 | -5.13 ± 4.32 | 0.69 |
|---|
| 800 | 24 | 85.603 | 4.61 | 22.29 | 9.6 ± 0.22 | -5.41 ± 3.06 | 0.83 |
|---|
| 850 | 15 | 73.946 | 5.64 | 24.32 | 10.2 ± 0.18 | -5.08 ± 4.57 | 0.90 |
|---|
| 875 | 15 | 73.892 | 5.75 | 26.39 | 10.1 ± 0.18 | -5.04 ± 4.56 | 0.98 |
|---|
| 900 | 15 | 70.307 | 5.68 | 28.43 | 10.5 ± 0.18 | -5.01 ± 4.56 | 1.08 |
|---|
| 925 | 19 | 65.175 | 7.19 | 31.02 | 10.6 ± 0.15 | -4.98 ± 3.70 | 1.16 |
|---|
| 950 | 17 | 64.857 | 6.51 | 33.36 | 10.9 ± 0.16 | -4.94 ± 4.07 | 1.24 |
|---|
| 975 | 17 | 61.385 | 7.06 | 35.89 | 11.4 ± 0.27 | -4.87 ± 4.07 | 1.29 |
|---|
| 1000 | 26 | 62.019 | 10.30 | 39.60 | 11.5 ± 0.10 | -4.85 ± 2.85 | 1.38 |
|---|
| 1025 | 31 | 61.450 | 11.00 | 43.56 | 12.3 ± 0.13 | -4.86 ± 2.49 | 1.46 |
|---|
| 1050 | 28 | 61.862 | 9.99 | 47.15 | 13.4 ± 0.11 | -4.82 ± 2.68 | 1.53 |
|---|
| 1075 | 15 | 61.682 | 7.03 | 49.68 | 14.6 ± 0.16 | -4.67 ± 4.54 | 1.53 |
|---|
| 1075 | 28 | 66.642 | 7.49 | 52.37 | 14.7 ± 0.15 | -4.89 ± 2.68 | 1.64 |
|---|
| 1075 | 40 | 67.363 | 8.64 | 55.47 | 15.7 ± 0.13 | -4.94 ± 2.11 | 1.67 |
|---|
| 1075 | 60 | 70.309 | 8.99 | 58.70 | 16.2 ± 0.15 | -5.07 ± 1.72 | 1.73 |
|---|
| 1075 | 104 | 74.154 | 10.80 | 62.60 | 16.7 ± 0.14 | -5.19 ± 1.47 | 1.79 |
|---|
| 1100 | 115 | 76.954 | 13.30 | 67.39 | 17.3 ± 0.10 | -5.09 ± 1.43 | 1.82 |
|---|
| 1100 | 192 | 89.504 | 13.60 | 72.28 | 16.9 ± 0.13 | -5.24 ± 1.37 | 1.90 |
|---|
| 1100 | 772 | ****** | 25.30 | 81.37 | 17.2 ± 0.18 | -5.46 ± 1.19 | 2.00 |
|---|
| 1200 | 40 | 69.096 | 15.70 | 87.01 | 16.6 ± 0.14 | -4.22 ± 2.04 | 1.66 |
|---|
| 1225 | 16 | 65.232 | 8.18 | 89.95 | 16.6 ± 0.14 | -3.96 ± 4.28 | 1.60 |
|---|
| 1250 | 15 | 70.869 | 9.88 | 93.50 | 16.6 ± 0.14 | -3.71 ± 4.53 | 1.53 |
|---|
| 1275 | 17 | 69.052 | 10.70 | 97.36 | 16.6 ± 0.14 | -3.45 ± 3.98 | 1.46 |
|---|
| 1350 | 15 | ****** | 4.38 | 98.94 | 16.6 ± 0.14 | -3.39 ± 4.52 | 1.60 |
|---|
| 1550 | 11 | -5.662 | 2.96 | 99.99 | 16.6 ± 0.14 | -2.54 ± 4.09 | 1.56 |
|---|