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 |