Table 4 U–Pb dating results for zircon 91500 by LA-ICP-QMS (n ≥ 5)
From: Analytical effect of stabilizer volume and shape on zircon U–Pb dating by nanosecond LA-ICP-QMS
Stabilizer type/volume (mL) | Sample no. | 206Pb/238U ratio | 1σ | 206Pb/238U Age (Ma) | 1σ | Concordance (%) | RE% | Average age deviation (%)* |
|---|---|---|---|---|---|---|---|---|
Squid/16.3 | 91500-1-1 | 0.17045 | 0.00305 | 1014.57 | 16.81 | 96 | 1.66 | − 4.8 |
91500-1-2 | 0.18828 | 0.00350 | 1112.06 | 18.99 | 97 | 1.71 | + 4.4 | |
91500-1-3 | 0.18411 | 0.00312 | 1089.40 | 17.01 | 99 | 1.56 | + 2.3 | |
91500-1-4 | 0.17785 | 0.00370 | 1055.23 | 20.23 | 99 | 1.92 | − 0.95 | |
91500-1-5 | 0.18113 | 0.00362 | 1073.12 | 19.76 | 96 | 1.84 | + 0.72 | |
Average | 0.18036 | 0.00340 | 1068.88 | 18.56 | 97 | 1.74 | + 0.33 | |
Cylinder/21.2 | 91500-2-1 | 0.18008 | 0.00328 | 1067.39 | 17.91 | 97 | 1.68 | + 0.19 |
91500-2-2 | 0.17511 | 0.00283 | 1040.20 | 15.55 | 98 | 1.49 | − 2.4 | |
91500-2-3 | 0.18032 | 0.00297 | 1068.74 | 16.20 | 94 | 1.52 | + 0.31 | |
91500-2-4 | 0.17841 | 0.00331 | 1058.30 | 18.13 | 97 | 1.71 | − 0.67 | |
91500-2-5 | 0.17668 | 0.00304 | 1048.82 | 16.64 | 94 | 1.59 | − 1.56 | |
Average | 0.17812 | 0.00309 | 1056.69 | 16.89 | 96 | 1.60 | − 0.82 | |
Cylinder/25.1 | 91500-3-1 | 0.19652 | 0.00460 | 1156.62 | 24.78 | 48 | 2.14 | + 8.6 |
91500-3-2 | 0.50576 | 0.01620 | 2638.51 | 69.38 | 62 | 2.63 | + 148 | |
91500-3-3 | 0.19533 | 0.00368 | 1150.21 | 19.87 | 97 | 1.73 | + 8.0 | |
91500-3-4 | 0.19407 | 0.00345 | 1143.39 | 18.64 | 96 | 1.63 | + 7.3 | |
91500-3-5 | 0.19551 | 0.00322 | 1151.16 | 17.38 | 98 | 1.51 | + 8.1 | |
Average | 0.25744 | 0.00623 | 1447.98 | 30.01 | 80 | 1.93 | + 36 | |
Cylinder/35.3 | 91500-4-1 | 0.17666 | 0.00327 | 1048.72 | 17.89 | 98 | 1.71 | − 1.6 |
91500-4-2 | 0.17322 | 0.00291 | 1029.85 | 16.02 | 98 | 1.56 | − 3.3 | |
91500-4-3 | 0.16819 | 0.00303 | 1002.11 | 16.74 | 98 | 1.67 | − 5.9 | |
91500-4-4 | 0.17241 | 0.00296 | 1025.36 | 16.29 | 96 | 1.59 | − 3.8 | |
91500-4-5 | 0.17096 | 0.00334 | 1017.42 | 18.39 | 97 | 1.81 | − 4.5 | |
Average | 0.17229 | 0.00310 | 1024.69 | 17.07 | 97 | 1.67 | − 3.8 | |
Cylinder/21.2 (with 1.0 g stainless wire) | 91500-5-1 | 0.18190 | 0.00277 | 1077.32 | 15.11 | 96 | 1.40 | + 1.1 |
91500-5-2 | 0.17913 | 0.00271 | 1062.21 | 14.82 | 98 | 1.40 | − 0.30 | |
91500-5-3 | 0.17830 | 0.00276 | 1057.67 | 15.10 | 99 | 1.43 | − 0.73 | |
91500-5-4 | 0.17996 | 0.00303 | 1066.73 | 16.54 | 97 | 1.55 | + 0.12 | |
91500-5-5 | 0.18037 | 0.00298 | 1069.00 | 16.30 | 95 | 1.52 | + 0.34 | |
Average | 0.17993 | 0.00285 | 1066.59 | 15.57 | 97 | 1.46 | + 0.11 |