测点序号 | 2 | 3 | 5 | 6 | 8 | 9 | |
Th (ppm) | 405 | 215 | 429 | 417 | 190 | 764 | |
U (ppm) | 572 | 287 | 470 | 573 | 272 | 938 | |
Th/U | 0.71 | 0.75 | 0.91 | 0.73 | 0.70 | 0.81 | |
同位素比值和误差 | 207Pb/206Pb | 0.0521 | 0.0570 | 0.0516 | 0.0507 | 0.0513 | 0.0511 |
1σ | 0.0015 | 0.0024 | 0.0016 | 0.0013 | 0.0024 | 0.0015 | |
207Pb/235U | 0.2620 | 0.3084 | 0.2750 | 0.2748 | 0.2597 | 0.2647 | |
1σ | 0.0075 | 0.0129 | 0.0084 | 0.0073 | 0.0118 | 0.0077 | |
206Pb/238U | 0.0365 | 0.0392 | 0.0387 | 0.0393 | 0.0367 | 0.0375 | |
1σ | 0.0005 | 0.0007 | 0.0006 | 0.0006 | 0.0006 | 0.0006 | |
年龄值和误差 | 207Pb/206Pb | 291 | 493 | 268 | 228 | 253 | 247 |
1σ | 66 | 95 | 71 | 62 | 108 | 69 | |
207Pb/235U | 236 | 273 | 247 | 247 | 234 | 238 | |
1σ | 6 | 10 | 7 | 6 | 10 | 6 | |
206Pb/238U | 231 | 248 | 245 | 249 | 233 | 238 | |
1σ | 3 | 4 | 4 | 3 | 4 | 3 | |
测点序号 | 12 | 13 | 15 | 16 | 17 | 19 | |
Th (ppm) | 1162 | 730 | 395 | 591 | 314 | 473 | |
U (ppm) | 1623 | 678 | 502 | 973 | 467 | 605 | |
Th/U | 0.72 | 1.08 | 0.79 | 0.61 | 0.67 | 0.78 | |
同位素比值和误差 | 207Pb/206Pb | 0.0512 | 0.0482 | 0.0509 | 0.0518 | 0.0494 | 0.0538 |
1σ | 0.0012 | 0.0013 | 0.0013 | 0.0015 | 0.0016 | 0.0018 | |
207Pb/235U | 0.2619 | 0.2466 | 0.2557 | 0.2642 | 0.2590 | 0.2693 | |
1σ | 0.0064 | 0.0067 | 0.0067 | 0.0078 | 0.0084 | 0.0089 | |
206Pb/238U | 0.0371 | 0.0371 | 0.0365 | 0.0370 | 0.0380 | 0.0363 | |
1σ | 0.0005 | 0.0006 | 0.0005 | 0.0005 | 0.0005 | 0.0006 | |
年龄值和误差 | 207Pb/206Pb | 249 | 109 | 235 | 277 | 168 | 362 |
1σ | 57 | 64 | 62 | 70 | 79 | 76 | |
207Pb/235U | 236 | 224 | 231 | 238 | 234 | 242 | |
1σ | 5 | 5 | 5 | 6 | 7 | 7 | |
206Pb/238U | 235 | 235 | 231 | 234 | 240 | 230 | |
1σ | 3 | 3 | 3 | 3 | 3 | 4 |