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A peer-reviewed article of this preprint also exists.
This version is not peer-reviewed
Submitted:
10 May 2023
Posted:
10 May 2023
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Spot No. | Contents (ppm) | Th/U | Isotopic Ratios | Isotopic Ages (Ma) | |||||||||||||
232Th | 238U | 207Pb/206Pb | 1σ | 207Pb/235U | 1σ | 206Pb/238U | 1σ | 208Pb/232Th | 1σ | 207Pb/206Pb | 1σ | 207Pb/235U | 1σ | 206Pb/238U | 1σ | ||
CW-6-01 | 744 | 1889 | 0.39 | 0.0546 | 0.0018 | 0.5629 | 0.0146 | 0.0730 | 0.0012 | 0.0224 | 0.0005 | 394 | 79 | 453 | 10 | 454 | 7 |
CW-6-02 | 1093 | 2859 | 0.38 | 0.0602 | 0.0013 | 0.5984 | 0.0127 | 0.0721 | 0.0008 | 0.0247 | 0.0006 | 613 | 46 | 476 | 8 | 449 | 5 |
CW-6-03 | 781 | 2046 | 0.38 | 0.0559 | 0.0013 | 0.5572 | 0.0121 | 0.0709 | 0.0007 | 0.0215 | 0.0004 | 456 | 52 | 450 | 8 | 442 | 4 |
CW-6-04 | 744 | 1860 | 0.40 | 0.0559 | 0.0013 | 0.5516 | 0.0114 | 0.0712 | 0.0008 | 0.0219 | 0.0004 | 456 | 52 | 446 | 7 | 444 | 5 |
CW-6-05 | 370 | 1424 | 0.26 | 0.0538 | 0.0013 | 0.5396 | 0.0132 | 0.0725 | 0.0007 | 0.0213 | 0.0004 | 365 | 54 | 438 | 9 | 451 | 4 |
CW-6-06 | 619 | 1916 | 0.32 | 0.0561 | 0.0013 | 0.5718 | 0.0168 | 0.0734 | 0.0009 | 0.0225 | 0.0004 | 457 | 52 | 459 | 11 | 457 | 5 |
CW-6-07 | 368 | 1498 | 0.25 | 0.0599 | 0.0012 | 0.5898 | 0.0120 | 0.0712 | 0.0006 | 0.0251 | 0.0004 | 611 | 38 | 471 | 8 | 444 | 3 |
CW-6-08 | 465 | 1687 | 0.28 | 0.0557 | 0.0010 | 0.5507 | 0.0110 | 0.0715 | 0.0007 | 0.0218 | 0.0004 | 443 | 43 | 445 | 7 | 445 | 4 |
CW-6-09 | 342 | 1222 | 0.28 | 0.0560 | 0.0012 | 0.5480 | 0.0117 | 0.0708 | 0.0006 | 0.0220 | 0.0004 | 450 | 46 | 444 | 8 | 441 | 4 |
CW-6-10 | 516 | 1633 | 0.32 | 0.0562 | 0.0018 | 0.5645 | 0.0180 | 0.0728 | 0.0008 | 0.0228 | 0.0005 | 457 | 72 | 454 | 12 | 453 | 5 |
CW-6-11 | 393 | 1455 | 0.27 | 0.0577 | 0.0020 | 0.5787 | 0.0200 | 0.0723 | 0.0008 | 0.0272 | 0.0007 | 520 | 74 | 464 | 13 | 450 | 5 |
CW-6-12 | 761 | 2264 | 0.34 | 0.0559 | 0.0013 | 0.5637 | 0.0135 | 0.0727 | 0.0006 | 0.0212 | 0.0004 | 456 | 50 | 454 | 9 | 452 | 4 |
CW-6-13 | 494 | 1690 | 0.29 | 0.0553 | 0.0012 | 0.5519 | 0.0128 | 0.0719 | 0.0007 | 0.0230 | 0.0005 | 433 | 48 | 446 | 8 | 448 | 4 |
CW-6-14 | 428 | 1386 | 0.31 | 0.0561 | 0.0014 | 0.5554 | 0.0135 | 0.0716 | 0.0007 | 0.0221 | 0.0005 | 457 | 21 | 449 | 9 | 446 | 4 |
CW-6-15 | 615 | 1777 | 0.35 | 0.0556 | 0.0014 | 0.5521 | 0.0159 | 0.0714 | 0.0006 | 0.0226 | 0.0005 | 435 | 56 | 446 | 10 | 444 | 4 |
CW-6-16 | 451 | 1584 | 0.28 | 0.0558 | 0.0012 | 0.5587 | 0.0122 | 0.0722 | 0.0006 | 0.0216 | 0.0004 | 443 | 51 | 451 | 8 | 449 | 4 |
CW-6-17 | 495 | 1491 | 0.33 | 0.0571 | 0.0019 | 0.5540 | 0.0185 | 0.0700 | 0.0009 | 0.0233 | 0.0006 | 498 | 74 | 448 | 12 | 436 | 5 |
CW-6-18 | 608 | 1693 | 0.36 | 0.0621 | 0.0020 | 0.6192 | 0.0221 | 0.0718 | 0.0009 | 0.0242 | 0.0012 | 676 | 69 | 489 | 14 | 447 | 5 |
CW-6-19 | 487 | 1678 | 0.29 | 0.0563 | 0.0014 | 0.5778 | 0.0141 | 0.0737 | 0.0008 | 0.0233 | 0.0006 | 465 | 54 | 463 | 9 | 459 | 5 |
Spot No. | La | Ce | Pr | Nd | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu | Eu/Eu* | Hf | Ta | Y | Ti | Nb |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CW-6-01 | 0.16 | 65.71 | 0.30 | 2.50 | 5.64 | 3.43 | 41.79 | 15.29 | 207 | 88.11 | 442 | 106.56 | 1095 | 257 | 0.49 | 28295 | 6.09 | 2803 | 13.32 | 18.18 |
CW-6-02 | 2.71 | 95.28 | 2.51 | 16.76 | 13.22 | 6.67 | 59.00 | 21.00 | 273 | 113.41 | 556 | 132.00 | 1356 | 306 | 0.62 | 27149 | 8.94 | 3634 | 22.20 | 33.09 |
CW-6-03 | 0.01 | 66.60 | 0.08 | 1.92 | 6.56 | 3.44 | 42.17 | 16.44 | 217 | 91.56 | 472 | 113.50 | 1184 | 277 | 0.48 | 28530 | 6.55 | 2957 | 11.24 | 19.62 |
CW-6-04 | 0.20 | 76.26 | 0.21 | 3.53 | 6.55 | 4.17 | 44.84 | 17.58 | 227 | 97.89 | 498 | 118.97 | 1248 | 292 | 0.55 | 27469 | 6.58 | 3153 | 12.14 | 22.23 |
CW-6-05 | 0.02 | 50.15 | 0.11 | 1.65 | 4.07 | 2.80 | 30.96 | 13.94 | 189 | 80.95 | 418 | 102.28 | 1088 | 261 | 0.54 | 27647 | 5.66 | 2607 | 9.11 | 15.53 |
CW-6-06 | 13.94 | 82.46 | 4.87 | 22.53 | 7.96 | 3.02 | 38.18 | 13.71 | 181 | 76.11 | 395 | 94.46 | 1003 | 239 | 0.44 | 29534 | 5.88 | 2473 | 7.24 | 17.51 |
CW-6-07 | 2.96 | 62.56 | 1.85 | 11.27 | 10.34 | 4.18 | 41.91 | 14.74 | 210 | 92.24 | 490 | 122.45 | 1296 | 311 | 0.53 | 29319 | 6.04 | 3019 | 13.23 | 18.31 |
CW-6-08 | 0.00 | 60.01 | 0.09 | 2.03 | 6.29 | 3.34 | 44.66 | 16.44 | 239 | 108.89 | 573 | 139.26 | 1488 | 355 | 0.45 | 28350 | 6.75 | 3530 | 10.76 | 23.00 |
CW-6-09 | 0.01 | 51.36 | 0.11 | 2.37 | 5.80 | 3.42 | 40.01 | 15.27 | 228 | 100.04 | 538 | 131.31 | 1376 | 327 | 0.51 | 27151 | 5.18 | 3246 | 11.26 | 18.19 |
CW-6-10 | 0.06 | 55.93 | 0.15 | 2.10 | 4.98 | 3.37 | 36.84 | 14.65 | 201 | 85.35 | 452 | 110.00 | 1156 | 273 | 0.55 | 28330 | 6.46 | 2800 | 11.83 | 19.52 |
CW-6-11 | 1.61 | 82.48 | 1.61 | 11.68 | 10.50 | 4.74 | 42.03 | 14.21 | 192 | 83.62 | 420 | 98.51 | 1029 | 252 | 0.60 | 29354 | 4.25 | 2626 | 22.40 | 13.69 |
CW-6-12 | 0.08 | 60.44 | 0.08 | 1.06 | 4.83 | 3.30 | 35.79 | 13.82 | 191 | 83.22 | 420 | 102.55 | 1069 | 252 | 0.55 | 29612 | 7.33 | 2661 | 9.38 | 19.93 |
CW-6-13 | 0.01 | 62.43 | 0.11 | 2.33 | 6.54 | 3.99 | 45.41 | 18.07 | 254 | 114.76 | 605 | 150.52 | 1592 | 380 | 0.52 | 27316 | 6.95 | 3712 | 13.38 | 22.66 |
CW-6-14 | 1.56 | 56.25 | 0.78 | 6.05 | 6.50 | 3.42 | 40.46 | 15.75 | 209 | 92.13 | 485 | 117.96 | 1243 | 297 | 0.49 | 27661 | 5.72 | 2963 | 30.72 | 17.65 |
CW-6-15 | 0.40 | 62.18 | 0.30 | 2.90 | 6.80 | 3.51 | 42.94 | 15.20 | 214 | 91.05 | 469 | 113.20 | 1174 | 280 | 0.48 | 27915 | 6.77 | 2907 | 10.23 | 19.48 |
CW-6-16 | 0.01 | 53.87 | 0.11 | 2.03 | 5.84 | 2.90 | 38.17 | 15.39 | 211 | 94.62 | 492 | 120.89 | 1268 | 304 | 0.45 | 28605 | 6.03 | 3029 | 11.04 | 20.50 |
CW-6-17 | 0.19 | 57.12 | 0.20 | 2.29 | 5.43 | 2.38 | 32.30 | 12.46 | 165 | 70.94 | 370 | 88.25 | 928 | 220 | 0.43 | 28248 | 5.33 | 2278 | 21.60 | 13.96 |
CW-6-18 | 4.17 | 127.01 | 4.87 | 31.21 | 23.26 | 12.35 | 68.83 | 21.36 | 245 | 98.51 | 473 | 107.22 | 1144 | 262 | 0.87 | 26455 | 6.09 | 3042 | 15.51 | 18.31 |
CW-6-19 | 0.03 | 55.17 | 0.09 | 1.80 | 5.20 | 3.05 | 39.80 | 15.83 | 224 | 99.35 | 531 | 132.58 | 1388 | 334 | 0.46 | 28114 | 6.50 | 3256 | 10.68 | 21.27 |
Sample | CW-1 | CW-2 | CW-3 | CW-4 | CW-5 | CW-6 |
---|---|---|---|---|---|---|
SiO2 | 62.80 | 62.87 | 59.75 | 58.34 | 57.53 | 61.97 |
TiO2 | 0.61 | 0.59 | 0.74 | 0.77 | 0.90 | 0.63 |
Al2O3 | 16.32 | 16.85 | 16.99 | 16.66 | 17.16 | 16.90 |
Fe2O3T | 5.39 | 5.22 | 6.58 | 6.63 | 7.88 | 5.54 |
MnO | 0.13 | 0.12 | 0.14 | 0.14 | 0.17 | 0.12 |
MgO | 2.13 | 2.10 | 2.43 | 2.63 | 3.01 | 2.08 |
CaO | 3.47 | 3.71 | 4.65 | 5.46 | 5.26 | 3.81 |
Na2O | 3.91 | 3.95 | 3.78 | 3.71 | 3.65 | 3.86 |
K2O | 2.95 | 2.93 | 2.78 | 2.94 | 2.50 | 2.82 |
P2O5 | 0.19 | 0.19 | 0.23 | 0.23 | 0.26 | 0.20 |
LOI | 2.13 | 1.36 | 1.42 | 2.453 | 1.43 | 1.62 |
Total | 100.03 | 99.90 | 99.48 | 99.97 | 99.74 | 99.56 |
Mg# | 44 | 44 | 42 | 44 | 43 | 43 |
A/CNK | 1.02 | 1.02 | 0.96 | 0.87 | 0.94 | 1.03 |
Na2O+K2O | 6.86 | 6.89 | 6.55 | 6.65 | 6.16 | 6.68 |
Sc | 9.22 | 8.41 | 11.84 | 11.76 | 15.11 | 9.24 |
V | 78.3 | 80.2 | 105.7 | 106.7 | 130.8 | 83.7 |
Cr | 4.81 | 5.21 | 5.69 | 5.45 | 6.43 | 4.58 |
Co | 8.92 | 9.08 | 11.92 | 11.89 | 14.65 | 9.57 |
Ni | 3.29 | 3.46 | 4.53 | 4.61 | 5.12 | 3.71 |
Cu | 9.87 | 8.70 | 11.77 | 14.24 | 23.66 | 4.63 |
Zn | 70.0 | 69.0 | 80.5 | 78.6 | 93.0 | 67.9 |
Rb | 92.1 | 90.0 | 81.6 | 80.2 | 76.6 | 72.9 |
Sr | 561 | 612 | 623 | 601 | 646 | 646 |
Y | 25.07 | 22.93 | 28.90 | 28.01 | 33.24 | 23.98 |
Zr | 193.6 | 180.5 | 218.9 | 206.7 | 228.8 | 193.5 |
Nb | 12.53 | 13.02 | 13.42 | 13.84 | 13.05 | 12.20 |
Ba | 1165 | 916 | 860 | 1151 | 822 | 902 |
La | 60.86 | 40.90 | 27.52 | 18.27 | 57.29 | 44.74 |
Ce | 112.96 | 77.92 | 53.83 | 37.62 | 111.28 | 85.59 |
Pr | 12.26 | 8.69 | 6.64 | 5.05 | 12.74 | 9.50 |
Nd | 41.73 | 30.58 | 25.94 | 21.20 | 45.27 | 33.69 |
Sm | 7.06 | 5.42 | 5.92 | 5.23 | 8.40 | 6.20 |
Eu | 1.58 | 1.36 | 1.60 | 1.57 | 1.96 | 1.54 |
Gd | 5.04 | 4.30 | 5.20 | 4.96 | 6.60 | 4.66 |
Tb | 0.74 | 0.64 | 0.81 | 0.79 | 1.00 | 0.70 |
Dy | 4.30 | 3.70 | 4.92 | 4.67 | 5.89 | 3.98 |
Ho | 0.86 | 0.79 | 0.96 | 1.00 | 1.17 | 0.83 |
Er | 2.59 | 2.32 | 2.93 | 2.87 | 3.32 | 2.50 |
Tm | 0.37 | 0.34 | 0.44 | 0.42 | 0.48 | 0.37 |
Yb | 2.50 | 2.37 | 2.86 | 2.87 | 3.17 | 2.38 |
Lu | 0.39 | 0.36 | 0.44 | 0.43 | 0.49 | 0.37 |
Hf | 5.02 | 4.60 | 5.44 | 5.11 | 5.71 | 4.76 |
Ta | 0.76 | 0.90 | 0.80 | 0.81 | 0.65 | 0.73 |
Pb | 21.10 | 18.48 | 15.75 | 18.52 | 17.27 | 19.10 |
Th | 15.53 | 10.99 | 6.12 | 4.29 | 14.31 | 11.99 |
U | 1.68 | 1.39 | 1.57 | 1.68 | 2.17 | 1.79 |
REE | 253.22 | 179.69 | 140.01 | 106.95 | 259.06 | 197.05 |
Eu/Eu* | 0.77 | 0.83 | 0.86 | 0.93 | 0.78 | 0.84 |
Sr/Y | 22.38 | 26.68 | 21.57 | 21.44 | 19.44 | 26.93 |
Nb/Ta | 16.38 | 14.46 | 16.70 | 16.99 | 20.22 | 16.70 |
(La/Yb)N | 17.47 | 12.36 | 6.91 | 4.56 | 12.95 | 13.47 |
(Gd/Yb)N | 1.67 | 1.50 | 1.51 | 1.43 | 1.72 | 1.62 |
87Rb/86Sr | 0.4258 | 0.3863 | 0.3267 | |||
87Sr/86Sr | 0.711129 | 0.710716 | 0.710747 | |||
(87Sr/86Sr)i | 0.708338 | 0.708184 | 0.708606 | |||
147Sm/144Nd | 0.1071 | 0.1493 | 0.1113 | |||
143Nd/144Nd | 0.512124 | 0.512243 | 0.512119 | |||
εNd(t) | -4.8 | -4.9 | -5.1 | |||
TDM2 (Ma) | 1579 | 1591 | 1607 |
Spot No. | Age (Ma) | 176Yb/177Hf | 176Lu/177Hf | 176Hf/177Hf | 1σ | εHf(0) | εHf(t) | TDM (Ma) | TDMc (Ma) | fLu/Hf |
---|---|---|---|---|---|---|---|---|---|---|
CW-6-01 | 454 | 0.047583 | 0.001043 | 0.282401 | 0.000028 | -13.1 | -3.5 | 1204 | 1499 | -0.97 |
CW-6-03 | 442 | 0.060913 | 0.001249 | 0.282459 | 0.000102 | -11.1 | -1.7 | 1128 | 1393 | -0.96 |
CW-6-04 | 444 | 0.053286 | 0.001496 | 0.282355 | 0.000036 | -14.7 | -5.4 | 1283 | 1599 | -0.95 |
CW-6-05 | 451 | 0.041103 | 0.000944 | 0.282449 | 0.000048 | -11.4 | -1.8 | 1133 | 1404 | -0.97 |
CW-6-06 | 457 | 0.051349 | 0.001116 | 0.282409 | 0.000073 | -12.8 | -3.1 | 1195 | 1483 | -0.97 |
CW-6-07 | 444 | 0.074723 | 0.001580 | 0.282135 | 0.000366 | -22.5 | -13.2 | 1598 | 2029 | -0.95 |
CW-6-08 | 445 | 0.067271 | 0.001497 | 0.282319 | 0.000104 | -16.0 | -6.7 | 1335 | 1670 | -0.95 |
CW-6-09 | 441 | 0.043239 | 0.001363 | 0.282365 | 0.000032 | -14.4 | -5.1 | 1264 | 1578 | -0.96 |
CW-6-10 | 453 | 0.053681 | 0.001471 | 0.282335 | 0.000066 | -15.4 | -5.9 | 1310 | 1634 | -0.96 |
CW-6-12 | 452 | 0.067973 | 0.001496 | 0.282411 | 0.000057 | -12.8 | -3.3 | 1204 | 1487 | -0.95 |
CW-6-13 | 448 | 0.062911 | 0.001953 | 0.282340 | 0.000028 | -15.3 | -6.0 | 1320 | 1634 | -0.94 |
CW-6-14 | 446 | 0.079210 | 0.002148 | 0.282753 | 0.000114 | -0.7 | 8.5 | 730 | 830 | -0.94 |
CW-6-15 | 444 | 0.057545 | 0.001758 | 0.282422 | 0.000041 | -12.4 | -3.1 | 1197 | 1473 | -0.95 |
CW-6-16 | 449 | 0.059503 | 0.001403 | 0.282364 | 0.000085 | -14.4 | -5.0 | 1268 | 1579 | -0.96 |
CW-6-19 | 459 | 0.061641 | 0.001196 | 0.282682 | 0.000099 | -3.2 | 6.6 | 812 | 948 | -0.96 |
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