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Table Ig7-U
U, Th and Pb LA-ICP-MS data of zircon crystals from sample GCH-23
207
Pb
a
U
b
Pb
b
Th
b 206
Pbc
c 207
Pb
d
±2
V
206
Pb
d
±2
V
ȡ
e 207
Pb
d
±2
V
206
Pb
f
±2
V
207
Pb
f
±2
V
207
Pb
f
±2
V
Conc.
g
(cps) (ppm) (ppm)
U (%)
235
U (%)
238
U (%) (rho)
206
Pb (%)
238
U (Ma)
235
U (Ma)
206
Pb (Ma) (%)
A130 13733 788 132 9.17 0.2 0.5487 3.0 0.0719 2.0 0.68 0.0553 2.2 448 9 444 11 425 49 105
A152 11880 1347 156 2.79 0.5 0.5818 3.0 0.0752 1.6 0.53 0.0562 2.5 467 7 466 11 458 56 102
A151 1637 93 8 0.89 0.0 0.5829 4.5 0.0753 1.8 0.39 0.0561 4.2 468 8 466 17 457 92 102
A119 3593 440 43 1.56 0.0 0.5943 2.9 0.0754 1.3 0.46 0.0572 2.5 469 6 474 11 498 56 94
A123 3766 473 41 0.97 0.0 0.5950 2.9 0.0756 1.2 0.41 0.0571 2.7 470 5 474 11 496 59 95
A160 2476 112 9 0.71 2.5 0.5878 10.3 0.0758 1.9 0.18 0.0562 10.1 471 9 469 39 462 224 102
A137 2051 126 10 0.42 b.d.
0.5998 3.5 0.0763 1.5 0.42 0.0570 3.2 474 7 477 13 492 70 96
A124 1861 237 20 0.79 b.d.
0.6108 3.5 0.0774 1.6 0.44 0.0573 3.2 480 7 484 14 502 70 96
A144 6999 402 38 1.29 0.3 0.6029 3.8 0.0774 1.4 0.36 0.0565 3.5 481 6 479 15 472 78 102
A122 3832 452 44 1.56 b.d.
0.6144 2.9 0.0775 1.5 0.52 0.0575 2.5 481 7 486 11 512 54 94
A162 972 55 4 0.28 0.2 0.6123 4.5 0.0780 1.5 0.34 0.0569 4.2 484 7 485 17 489 93 99
A142 1061 65 5 0.49 b.d.
0.6154 4.0 0.0781 1.6 0.39 0.0572 3.7 485 7 487 16 498 81 97
A158 8787 612 68 2.20 0.0 0.6122 1.9 0.0782 1.2 0.62 0.0568 1.5 486 6 485 8 482 34 101
A140 811 46 4 0.40 b.d.
0.6140 6.7 0.0784 2.0 0.30 0.0568 6.4 486 9 486 26 485 141 100
A125 3772 452 36 0.42 b.d.
0.6256 2.9 0.0789 1.4 0.50 0.0575 2.5 490 7 493 11 511 54 96
A128 3000 338 29 0.69 b.d.
0.6190 2.7 0.0790 1.6 0.59 0.0568 2.2 490 8 489 11 485 49 101
A120 1593 192 17 0.81 b.d.
0.6243 4.1 0.0791 1.4 0.34 0.0573 3.8 491 6 493 16 502 85 98
A159 2862 160 14 0.73 b.d.
0.6236 3.0 0.0791 1.6 0.51 0.0572 2.6 491 7 492 12 498 57 98
A121 2028 211 19 0.75 0.1 0.6296 4.3 0.0792 1.5 0.35 0.0577 4.1 491 7 496 17 518 89 95
A154 892 111 9 0.36 0.0 0.6261 4.2 0.0793 1.5 0.37 0.0573 3.9 492 7 494 16 503 85 98
A164 2196 130 11 0.65 0.1 0.6377 3.5 0.0794 1.6 0.45 0.0583 3.1 493 7 501 14 539 68 91
A115 1483 181 14 0.29 b.d.
0.6312 3.8 0.0798 1.5 0.38 0.0574 3.5 495 7 497 15 507 78 98
A116 1924 230 19 0.53 0.2 0.6423 3.2 0.0811 1.6 0.51 0.0575 2.7 502 8 504 13 510 60 99
A113 2760 348 31 0.74 0.0 0.6422 2.7 0.0811 1.4 0.51 0.0574 2.3 503 7 504 11 509 52 99
A157 1837 103 9 0.47 b.d.
0.6472 3.9 0.0812 1.5 0.38 0.0578 3.6 504 7 507 16 521 80 97
A145 665 80 7 0.39 b.d.
0.6462 7.3 0.0818 1.6 0.22 0.0573 7.1 507 8 506 29 504 156 100
A131 997 119 10 0.46 b.d.
0.6499 5.1 0.0818 1.4 0.27 0.0576 4.9 507 7 508 21 514 108 99
A141 9223 510 66 3.00 0.0 0.6478 2.1 0.0819 1.3 0.63 0.0574 1.6 507 6 507 8 506 36 100
A127 8744 1027 122 2.51 0.0 0.6522 2.0 0.0819 1.3 0.66 0.0577 1.5 508 6 510 8 520 33 98
A134 2625 300 28 0.88 b.d.
0.6556 3.3 0.0823 1.3 0.41 0.0578 3.0 510 7 512 13 522 66 98
A156 1589 91 7 0.37 b.d.
0.6548 3.7 0.0824 1.5 0.41 0.0577 3.4 510 7 511 15 517 74 99
A143 5431 311 33 1.71 b.d.
0.6576 2.7 0.0827 1.8 0.68 0.0577 2.0 512 9 513 11 517 44 99
A163 3565 410 34 0.38 b.d.
0.6540 3.2 0.0829 1.4 0.43 0.0573 2.9 513 7 511 13 501 64 102
A153 10187 542 65 2.37 0.0 0.6634 2.3 0.0834 1.6 0.70 0.0577 1.6 517 8 517 9 517 35 100
A138 1809 99 9 0.53 0.2 0.6694 10.4 0.0846 1.7 0.16 0.0574 10.3 523 9 520 43 507 227 103
A114 3670 414 44 1.45 0.0 0.6823 3.0 0.0847 1.9 0.64 0.0584 2.3 524 10 528 13 545 51 96
A117 3313 360 34 0.92 b.d.
0.6839 3.1 0.0852 1.4 0.46 0.0582 2.7 527 7 529 13 539 60 98
A155 3617 223 24 1.58 0.0 0.6913 2.9 0.0856 1.7 0.58 0.0586 2.3 529 9 534 12 552 51 96
A118 1485 143 14 0.42 0.8 0.8000 4.6 0.0961 1.5 0.33 0.0604 4.3 592 9 597 21 616 93 96
A135 1180 23 3 1.74 b.d.
0.8287 3.7 0.1000 1.8 0.49 0.0601 3.2 615 11 613 17 606 69 101
A133 3169 412 30 0.29 0.4 0.5849 2.7 0.0735 1.3 0.48 0.0577 2.4 457 6 468 10 519 52 88
A139 630 35 3 0.40 b.d.
0.6293 5.7 0.0776 1.8 0.31 0.0588 5.4 482 8 496 23 559 118 86
A126 3537 128 14 0.67 13.6 0.5837 13.3 0.0781 2.6 0.19 0.0542 13.0 484 12 467 51 381 292 127
A132 1083 67 5 0.46 b.d.
0.6541 4.2 0.0782 1.7 0.41 0.0607 3.9 485 8 511 17 629 83 77
A161 1427 108 10 0.52 2.4 0.6685 5.1 0.0801 1.7 0.35 0.0605 4.7 497 8 520 21 622 102 80
A136 637 35 3 0.69 0.4 0.7794 4.8 0.0816 1.9 0.39 0.0693 4.4 505 9 585 22 908 91 56
A129 3142 61 10 0.91 b.d.
1.9110 3.6 0.1386 1.6 0.43 0.1000 3.3 837 12 1085 25 1624 61 52
Grain
303