分析点 | Th (×10−6) | U (×10−6) | Th/u | U-Th-Pb isotopic ratios | U-Pb ages (Ma) | ||||||||||||
207Pb/206Pb | 1σ | 207Pb/235U | 1σ | 206Pb/238U | 1σ | 208Pb/232Th | 1σ | 207Pb/206Pb | 1σ | 207Pb/235U | 1σ | 206Pb/238U | 1σ | ||||
PM26-3A-1 | 165.17 | 258.0 | 0.64 | 0.0634 | 0.0013 | 1.0777 | 0.0232 | 0.1227 | 0.0016 | 0.0379 | 0.0008 | 720 | 44 | 743 | 11 | 746 | 9 |
PM26-3A-2 | 150.60 | 195.3 | 0.77 | 0.0670 | 0.0014 | 1.1349 | 0.0236 | 0.1229 | 0.0016 | 0.0368 | 0.0008 | 839 | 44 | 770 | 11 | 747 | 9 |
PM26-3A-3 | 349.62 | 312.8 | 1.12 | 0.0695 | 0.0013 | 1.1818 | 0.0275 | 0.1222 | 0.0017 | 0.0403 | 0.0009 | 922 | 37 | 792 | 13 | 743 | 10 |
PM26-3A-4 | 108.27 | 100.9 | 1.07 | 0.0659 | 0.0019 | 1.1124 | 0.0325 | 0.1226 | 0.0018 | 0.0394 | 0.0010 | 1200 | 59 | 759 | 16 | 745 | 10 |
PM26-3A-5 | 620.09 | 329.6 | 1.88 | 0.0661 | 0.0011 | 1.1214 | 0.0218 | 0.1223 | 0.0015 | 0.0382 | 0.0007 | 809 | 42 | 764 | 10 | 744 | 8 |
PM26-3A-6 | 103.58 | 153.0 | 0.68 | 0.0631 | 0.0015 | 1.0564 | 0.0242 | 0.1217 | 0.0015 | 0.0381 | 0.0008 | 722 | 50 | 732 | 12 | 740 | 9 |
PM26-3A-7 | 60.98 | 75.6 | 0.81 | 0.0663 | 0.0022 | 1.0955 | 0.0360 | 0.1207 | 0.0019 | 0.0399 | 0.0011 | 817 | 70 | 751 | 17 | 734 | 11 |
PM26-3A-8 | 75.71 | 96.4 | 0.79 | 0.0692 | 0.0023 | 1.1345 | 0.0376 | 0.1205 | 0.0019 | 0.0393 | 0.0011 | 906 | 69 | 770 | 18 | 733 | 11 |
PM26-3A-9 | 130.94 | 169.5 | 0.77 | 0.0799 | 0.0029 | 1.3800 | 0.0644 | 0.1213 | 0.0021 | 0.0444 | 0.0015 | 1194 | 71 | 880 | 27 | 738 | 12 |
PM26-3A-10 | 60.77 | 61.5 | 0.99 | 0.0686 | 0.0025 | 1.1475 | 0.0419 | 0.1219 | 0.0020 | 0.0424 | 0.0013 | 887 | 75 | 776 | 20 | 741 | 11 |
PM26-3A-11 | 121.57 | 126.6 | 0.96 | 0.0652 | 0.0019 | 1.1018 | 0.0345 | 0.1232 | 0.0019 | 0.0407 | 0.0011 | 789 | 61 | 754 | 17 | 749 | 11 |
PM26-3A-12 | 237.38 | 213.7 | 1.11 | 0.0703 | 0.0015 | 1.1932 | 0.0252 | 0.1232 | 0.0015 | 0.0423 | 0.0009 | 939 | 43 | 797 | 12 | 749 | 9 |
PM26-3A-13 | 106.32 | 99.6 | 1.07 | 0.0678 | 0.0026 | 1.1313 | 0.0432 | 0.1223 | 0.0021 | 0.0369 | 0.0013 | 865 | 80 | 768 | 21 | 744 | 12 |
PM26-3A-14 | 267.24 | 247.2 | 1.08 | 0.0665 | 0.0015 | 1.1204 | 0.0244 | 0.1226 | 0.0015 | 0.0413 | 0.0008 | 820 | 46 | 763 | 12 | 746 | 9 |
PM26-3A-15 | 44.04 | 66.6 | 0.66 | 0.0657 | 0.0023 | 1.0964 | 0.0395 | 0.1226 | 0.0021 | 0.0392 | 0.0011 | 794 | 79 | 752 | 19 | 746 | 12 |
PM26-3A-16 | 188.71 | 224.6 | 0.84 | 0.0665 | 0.0015 | 1.1096 | 0.0276 | 0.1206 | 0.0015 | 0.0389 | 0.0009 | 833 | 49 | 758 | 13 | 734 | 9 |
PM26-3A-17 | 61.49 | 83.7 | 0.73 | 0.0676 | 0.0022 | 1.1289 | 0.0356 | 0.1226 | 0.0019 | 0.0417 | 0.0011 | 857 | 69 | 767 | 17 | 746 | 11 |
PM26-3A-18 | 82.94 | 89.1 | 0.93 | 0.0640 | 0.0020 | 1.0784 | 0.0350 | 0.1226 | 0.0019 | 0.0377 | 0.0010 | 743 | 66 | 743 | 17 | 745 | 11 |
PM26-3A-19 | 93.20 | 81.9 | 1.14 | 0.0639 | 0.0024 | 1.0796 | 0.0413 | 0.1237 | 0.0023 | 0.0407 | 0.0011 | 739 | 78 | 743 | 20 | 752 | 13 |
PM26-3A-20 | 94.42 | 104.0 | 0.91 | 0.0685 | 0.0022 | 1.1635 | 0.0404 | 0.1232 | 0.0020 | 0.0398 | 0.0011 | 883 | 69 | 784 | 19 | 749 | 12 |