Chronology, Geochemistry and Tectonic Implications of Late Palaeozoic Intrusions from South of Xiwuqi, Inner Mongolia
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摘要: 为探讨兴蒙造山带南蒙古陆块南缘晚古生代的构造演化,对出露于西乌旗南部石英闪长岩、花岗闪长岩和黑云母花岗岩开展了详细的年代学、岩石地球化学及Hf同位素特征研究.结果表明:石英闪长岩、花岗闪长岩和黑云母花岗岩分别形成于330±2 Ma、274±1 Ma及271±1 Ma~282±1 Ma.石英闪长岩属高镁闪长岩/安山岩类 (HMA),与俯冲洋壳板片上部地幔楔中地幔橄榄岩的熔融作用有关,而花岗闪长岩及黑云母花岗岩的源区可能与新生地壳的部分熔融有关.结合区域成果,推测西乌旗南部晚古生代侵入岩均形成于古亚洲洋向北侧南蒙古陆块持续俯冲的阶段,早石炭世石英闪长岩属活动大陆边缘弧岩浆活动,早二叠世花岗闪长岩和黑云母花岗岩则是俯冲过程中短暂弧后伸展阶段的产物.Abstract: In order to discuss the tectonic evolution of the Xing-Meng orogenic belt during the Late Palaeozoic, this study conducts a systematic study of the chronology, geochemical compositions and Hf isotopic characteristics of the quartz diorite, granodiorite and biotite granite from the south of Xiwuqi, which is situated at the southern margin of the southern Mongolian terrane. Zircon U-Pb dating indicates that the quartz diorite, granodiorite and biotite granite were emplaced at ca. 330±2 Ma, 274±1 Ma and 271±1 Ma~282±1 Ma, respectively. The quartz diorite shows typical features of HMA and may be formed by melting of the subcontinental lithospheric mantle wedge induced by fluids released from partial melting of the subducted oceanic crust. The source of the studied granodiorite and biotite granite might be related to partial melting of juvenile crustal materials. Considering the regional geology, we infer that the Late Palaeozoic intrusions from the south of Xiwuqi were likely emplaced during the northward subduction of the Paleo-Asian Ocean plate beneath the southern Mongolian terrane. The Early Carboniferous quartz diorites are components of a continental arc-related magmatism, the Early Perrmian granodiorites and biotite granites are products of magmatism in a temporal back-arc extension setting during the northward subduction.
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Key words:
- Xing-Meng orogenic belt /
- Late Palaeozoic /
- arc-related magmatism /
- Hf isotope /
- subduction /
- geochemistry /
- geochronology
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图 1 研究区地质简图
a.内蒙古中部构造格局示意图,据Jian et al.(2008)及索伦山-锡林郭勒1:50万区域地质图改编;b.西乌旗南部达青牧场地区地质简图,据内蒙古西乌珠穆沁旗幅1:20万地质图改编
Fig. 1. Geological sketch of research area
图 5 石英闪长岩εHf(t)-年龄图解
图a中East Xing-Meng及Yanshan Belt背景值据Chen et al.(2009)、Xiao et al.(2004)和Yang et al.(2006);图b中背景值据Chen et al.(2009)、Liu et al.(2009)、Liu et al.(2011, 2013)、Hu et al.(2015)、Li et al.(2015b)、周文孝 (2012)、Shi et al.(2016)
Fig. 5. Plot of zircon εHf(t) values vs. 206Pb/238U age for the studied quartz diorite
图 6 研究区侵入岩TAS图解
据Middlemost et al.(1994)及Irvine and Baragar (1971)
Fig. 6. TAS diagram for the intrusions from our study area
图 7 研究区侵入岩SiO2-K2O图解及A/CNK-A/NK图解
a.据Rickwood (1989);b.据Frost et al.(2001);c.据Peccerillo and Taylor (1976)
Fig. 7. K2O vs. SiO2 diagram (a), modified alkali-lime index diagram (b) and A/NK vs. A/CNK diagram (c) for the studied intrusions
图 8 球粒陨石标准化REE图解及微量元素原始地幔标准化图解
a.据Boynton (1984)及Sun和Mcdonough (1989);b.据Sun和Mcdonough (1989)
Fig. 8. Chondrite-normalized REE patterns (a) and primitive mantle-normalized trace element patterns (b)
图 9 石英闪长岩Sm/Th-Th/Y图解 (a)、La/Nb-La/Ba图解 (b)、Th/Yb-Sr/La图解 (c) 及Th/Nb-Ba/Th图解 (d)
据邓晋福等 (2010);CLM.大陆岩石圈地幔
Fig. 9. Sm/Th-Th/Y (a), La/Nb-La/Ba (b), Th/Yb-Sr/La (c) and Th/Nb-Ba/Th (d) diagrams for the studied quartz diorite
图 10 HMA SiO2-MgO图解及FeOT/MgO-SiO2图解
PQ及PS线分别为HMA与MA、MA与非MA分界线;HT.高温;MT.中温;LT.低温;LF.低铁;据Elliott et al.(1997)
Fig. 10. SiO2-MgO and FeOT/MgO-SiO2 diagrams for HMA
图 11 研究区侵入岩F-An-Or三角相图
据Castro (2013);a.同化混染;b.残余体不混融
Fig. 11. F-An-Or pseudo-ternary diagram for the studied intrusions
表 1 内蒙古西乌旗地区南部侵入岩锆石U-Pb数据
Table 1. U-Pb isotopic compositions of intrusions from the south of Xiwuqi, Inner Mongolia
样号及测点 含量 (10-6) 同位素比值 年龄 (Ma) Pb U 206Pb/238U 1σ 207Pb/235U 1σ 207Pb/206Pb 1σ 206Pb/238U 1σ 207Pb/235U 1σ 207Pb/206Pb 1σ P01-b6-1 791 1 780 0.052 2 0.001 1 0.394 4 0.018 4 0.054 8 0.002 4 328 7 338 13 467 98 P01-b6-2 120 657 0.052 9 0.001 3 0.411 1 0.025 4 0.059 4 0.003 9 332 8 350 18 589 143 P01-b6-3 765 1 989 0.052 3 0.001 1 0.393 7 0.018 0 0.054 1 0.002 3 329 7 337 13 376 98 P01-b6-4 305 1 366 0.052 5 0.001 3 0.410 0 0.021 8 0.056 8 0.002 8 330 8 349 16 483 109 P01-b6-5 149 686 0.052 4 0.001 3 0.431 2 0.029 9 0.060 5 0.004 1 330 8 364 21 620 142 P01-b6-6 120 628 0.052 8 0.001 0 0.426 7 0.024 8 0.059 9 0.003 6 331 6 361 18 611 131 P01-b6-7 685 1 369 0.052 2 0.000 9 0.387 3 0.022 2 0.054 5 0.003 1 328 6 332 16 391 134 P01-b6-8 199 779 0.052 5 0.001 0 0.403 4 0.023 5 0.055 7 0.003 1 330 6 344 17 439 129 P01-b6-9 352 1 150 0.052 5 0.000 8 0.405 7 0.019 3 0.056 8 0.002 8 330 5 346 14 483 111 P01-b6-10 105 574 0.053 5 0.001 0 0.440 8 0.024 8 0.060 5 0.003 3 336 6 371 17 620 125 P01-b6-11 353 932 0.053 3 0.001 1 0.399 8 0.022 5 0.056 8 0.003 5 335 7 342 16 487 137 P01-b6-12 369 1 596 0.053 4 0.000 8 0.399 3 0.020 3 0.055 5 0.003 1 335 5 341 15 432 126 P01-b6-13 301 1 058 0.052 1 0.000 8 0.364 6 0.019 9 0.051 0 0.002 8 327 5 316 15 243 128 P01-b6-14 66 318 0.054 1 0.001 2 0.477 1 0.037 1 0.067 0 0.005 3 340 7 396 26 839 165 P01-b6-15 172 634 0.052 3 0.000 9 0.428 3 0.023 5 0.059 4 0.003 4 329 6 362 17 583 124 P01-b6-16 132 504 0.051 9 0.001 3 0.439 0 0.031 3 0.062 4 0.004 4 326 8 370 22 700 154 P01-b6-17 101 539 0.052 4 0.001 0 0.379 4 0.022 6 0.052 5 0.003 1 329 6 327 17 309 133 P01-b6-18 470 1 457 0.051 7 0.000 8 0.356 3 0.015 6 0.049 7 0.002 2 325 5 309 12 183 102 P01-b6-19 536 1 162 0.052 0 0.001 2 0.394 4 0.031 7 0.055 2 0.004 5 327 7 338 23 420 181 XW01-b7-1 23 441 0.043 2 0.000 3 0.497 6 0.015 8 0.083 5 0.002 5 273 2 410 13 1 280 58 XW01-b7-2 22 444 0.043 3 0.000 3 0.470 1 0.015 3 0.078 7 0.002 5 273 2 391 13 1 165 63 XW01-b7-3 16 349 0.043 3 0.000 3 0.430 4 0.025 6 0.072 1 0.004 1 273 2 363 22 988 117 XW01-b7-4 26 557 0.043 3 0.000 3 0.571 2 0.018 6 0.095 8 0.002 9 273 2 459 15 1 543 58 XW01-b7-5 18 396 0.043 4 0.000 3 0.309 4 0.011 7 0.051 7 0.001 9 274 2 274 10 271 85 XW01-b7-6 32 676 0.043 3 0.000 2 0.434 9 0.013 9 0.072 9 0.002 3 273 2 367 12 1 010 65 XW01-b7-7 30 605 0.043 2 0.000 3 0.441 6 0.014 5 0.074 2 0.002 4 273 2 371 12 1 046 64 XW01-b7-8 21 327 0.050 9 0.000 3 0.705 6 0.017 7 0.100 5 0.002 5 320 2 542 14 1 634 46 XW01-b7-9 31 625 0.043 3 0.000 3 0.547 0 0.019 4 0.091 6 0.003 1 273 2 443 16 1 459 65 XW01-b7-10 18 398 0.043 2 0.000 2 0.308 6 0.011 0 0.051 8 0.001 8 273 2 273 10 277 80 XW01-b7-11 20 323 0.053 5 0.000 4 0.653 2 0.021 4 0.088 5 0.002 8 336 2 510 17 1 394 60 XW01-b7-12 14 309 0.043 2 0.000 3 0.418 7 0.038 8 0.070 3 0.006 5 273 2 355 33 937 190 XW01-b7-13 17 365 0.043 4 0.000 3 0.308 7 0.012 8 0.051 6 0.002 1 274 2 273 11 268 92 XW01-b7-14 24 456 0.047 6 0.000 3 0.485 7 0.015 7 0.073 9 0.002 4 300 2 402 13 1 040 64 XW01-b7-15 22 456 0.043 2 0.000 3 0.406 4 0.015 3 0.068 2 0.002 6 273 2 346 13 874 78 XW01-b7-16 17 364 0.043 6 0.000 3 0.309 6 0.017 9 0.051 5 0.002 9 275 2 274 16 265 129 XW01-b7-17 32 739 0.043 3 0.000 3 0.308 8 0.007 2 0.051 7 0.001 2 273 2 273 6 273 51 XW01-b7-18 18 404 0.043 4 0.000 3 0.308 9 0.016 0 0.051 6 0.002 7 274 2 273 14 268 118 XW01-b7-19 23 502 0.043 6 0.000 3 0.308 8 0.018 9 0.051 3 0.003 1 275 2 273 17 255 139 XW01-b7-20 18 415 0.043 2 0.000 3 0.308 5 0.017 0 0.051 8 0.002 8 273 2 273 15 275 123 XW01-b7-21 28 623 0.043 4 0.000 3 0.308 9 0.009 9 0.051 6 0.001 6 274 2 273 9 268 72 XW03-b7-1 15 305 0.044 5 0.000 3 0.318 6 0.019 4 0.051 9 0.003 1 281 2 281 17 281 137 XW03-b7-2 11 215 0.044 5 0.000 3 0.514 5 0.021 3 0.083 8 0.003 4 281 2 421 17 1 289 79 XW03-b7-3 19 397 0.044 5 0.000 3 0.459 7 0.016 8 0.074 9 0.002 7 281 2 384 14 1 066 72 XW03-b7-4 18 411 0.044 6 0.000 3 0.322 8 0.021 3 0.052 4 0.003 4 282 2 284 19 305 149 XW03-b7-5 10 227 0.044 5 0.000 3 0.320 8 0.015 1 0.052 3 0.002 4 281 2 283 13 298 106 XW03-b7-6 14 310 0.044 6 0.000 3 0.321 7 0.014 6 0.052 3 0.002 4 281 2 283 13 299 103 XW03-b7-7 13 290 0.044 6 0.000 3 0.319 6 0.013 1 0.052 0 0.002 1 281 2 282 12 284 93 XW03-b7-8 20 427 0.044 7 0.000 3 0.324 5 0.010 1 0.052 7 0.001 6 282 2 285 9 316 70 XW03-b7-9 14 304 0.044 8 0.000 4 0.319 5 0.010 1 0.051 7 0.001 7 283 2 282 9 273 75 XW03-b7-10 22 467 0.044 6 0.000 3 0.500 2 0.021 8 0.081 3 0.003 4 281 2 412 18 1 229 83 XW03-b7-11 15 329 0.044 7 0.000 3 0.320 2 0.012 1 0.051 9 0.001 9 282 2 282 11 282 85 XW03-b7-12 17 362 0.044 5 0.000 3 0.504 8 0.021 0 0.082 2 0.003 3 281 2 415 17 1 251 78 XW03-b7-13 17 339 0.047 9 0.000 3 0.492 3 0.016 5 0.074 5 0.002 4 302 2 406 14 1 054 65 XW03-b7-14 12 252 0.047 0 0.000 3 0.509 8 0.028 7 0.078 6 0.004 3 296 2 418 24 1 162 108 XW03-b7-15 23 542 0.044 9 0.000 3 0.321 6 0.009 1 0.052 0 0.001 4 283 2 283 8 285 62 XW03-b7-16 23 475 0.044 6 0.000 3 0.479 0 0.018 4 0.078 0 0.002 9 281 2 397 15 1 146 75 XW03-b7-17 27 551 0.044 5 0.000 3 0.540 5 0.013 5 0.088 1 0.002 1 281 2 439 11 1 385 47 XW03-b7-18 22 495 0.044 8 0.000 3 0.320 6 0.010 9 0.051 9 0.001 7 283 2 282 10 279 75 XW03-b7-19 22 464 0.044 6 0.000 3 0.407 1 0.020 0 0.066 3 0.003 3 281 2 347 17 814 104 XW03-b7-20 67 787 0.044 4 0.000 3 0.549 9 0.019 3 0.089 8 0.003 0 280 2 445 16 1 420 65 XW09-b6-1 36 816 0.042 9 0.000 4 0.306 5 0.009 2 0.051 8 0.001 6 271 2 271 8 276 71 XW09-b6-2 30 684 0.042 8 0.000 4 0.461 4 0.018 6 0.078 2 0.003 3 270 2 385 15 1 152 84 XW09-b6-3 34 790 0.042 9 0.000 3 0.304 5 0.008 4 0.051 4 0.001 4 271 2 270 7 260 62 XW09-b6-4 28 674 0.042 9 0.000 3 0.306 0 0.007 4 0.051 8 0.001 2 270 2 271 7 276 55 XW09-b6-5 45 1 026 0.042 8 0.000 3 0.399 1 0.009 1 0.067 6 0.001 6 270 2 341 8 857 49 XW09-b6-6 34 788 0.042 8 0.000 3 0.392 2 0.008 9 0.066 5 0.001 5 270 2 336 8 822 47 XW09-b6-7 42 924 0.042 8 0.000 3 0.481 9 0.020 6 0.081 7 0.003 3 270 2 399 17 1 237 80 XW09-b6-8 62 1 447 0.042 4 0.000 3 0.361 2 0.012 4 0.061 7 0.002 0 268 2 313 11 664 69 XW09-b6-9 53 1 169 0.042 9 0.000 3 0.397 3 0.009 8 0.067 1 0.001 6 271 2 340 8 842 49 XW09-b6-10 56 1 240 0.042 9 0.000 3 0.364 3 0.008 0 0.061 6 0.001 3 271 2 315 7 660 45 XW09-b6-11 52 1 212 0.042 8 0.000 3 0.356 7 0.007 8 0.060 4 0.001 3 270 2 310 7 618 45 XW09-b6-12 33 798 0.043 1 0.000 3 0.307 1 0.017 4 0.051 7 0.002 9 272 2 272 15 273 129 XW09-b6-13 36 807 0.042 8 0.000 3 0.305 1 0.013 0 0.051 7 0.002 2 270 2 270 12 272 97 XW09-b6-14 36 804 0.042 8 0.000 3 0.450 9 0.013 9 0.076 4 0.002 3 270 2 378 12 1 105 60 XW09-b6-15 57 1 230 0.043 2 0.000 3 0.305 7 0.006 2 0.051 3 0.001 0 273 2 271 6 256 46 XW09-b6-16 47 899 0.048 7 0.000 3 0.491 3 0.010 0 0.073 1 0.001 5 307 2 406 8 1 017 41 XW09-b6-17 63 1 390 0.043 1 0.000 3 0.304 7 0.007 7 0.051 2 0.001 3 272 2 270 7 252 56 XW09-b6-18 45 1 003 0.042 9 0.000 3 0.306 5 0.011 5 0.051 8 0.001 9 271 2 271 10 275 84 XW09-b6-19 34 699 0.046 0 0.000 3 0.485 1 0.015 3 0.076 5 0.002 3 290 2 402 13 1 109 61 XW09-b6-20 44 1 067 0.042 9 0.000 3 0.306 0 0.005 8 0.051 7 0.000 9 271 2 271 5 273 42 表 2 内蒙古西乌旗南部石英闪长岩锆石Hf同位素分析结果
Table 2. Zircon Hf isotopic compositions of the studied quartz diorite from the south of Xiwuqi, Inner Mongolia
测点 176Hf/177Hf 1σ 176Lu/177Hf 1σ 176Yb/177Hf 1σ εHf(0) εHf(t) TDM1(Ma) TDM2(Ma) fLu/Hf P01-b6-1 0.282 908 0.000 025 0.002 796 0.000 071 0.082 085 0.001 746 4.8 11.4 512 572 -0.92 P01-b6-2 0.282 823 0.000 012 0.000 438 0.000 003 0.011 239 0.000 129 1.8 9.0 599 711 -0.99 P01-b6-3 0.282 898 0.000 013 0.001 685 0.000 049 0.051 237 0.001 734 4.5 11.3 511 579 -0.95 P01-b6-4 0.282 782 0.000 011 0.000 622 0.000 001 0.017 449 0.000 109 0.4 7.5 659 794 -0.98 P01-b6-5 0.282 841 0.000 014 0.000 486 0.000 005 0.012 973 0.000 123 2.4 9.6 575 676 -0.99 P01-b6-6 0.282 861 0.000 009 0.000 826 0.000 021 0.023 063 0.000 680 3.1 10.2 552 641 -0.98 P01-b6-7 0.282 897 0.000 017 0.001 315 0.000 042 0.039 303 0.001 404 4.4 11.3 508 576 -0.96 P01-b6-8 0.282 897 0.000 011 0.000 745 0.000 009 0.020 023 0.000 194 4.4 11.5 500 568 -0.98 P01-b6-9 0.282 859 0.000 014 0.001 277 0.000 018 0.036 432 0.000 643 3.1 10.1 561 650 -0.96 P01-b6-10 0.282 862 0.000 011 0.000 493 0.000 004 0.012 579 0.000 075 3.2 10.5 545 632 -0.99 P01-b6-11 0.282 862 0.000 013 0.000 577 0.000 021 0.015 518 0.000 659 3.2 10.4 547 634 -0.98 P01-b6-12 0.282 834 0.000 011 0.000 638 0.000 010 0.017 048 0.000 277 2.2 9.4 587 690 -0.98 P01-b6-13 0.282 852 0.000 010 0.001 001 0.000 018 0.026 683 0.000 416 2.8 9.8 567 661 -0.97 P01-b6-14 0.282 853 0.000 011 0.000 875 0.000 029 0.023 567 0.000 763 2.9 10.2 563 653 -0.97 P01-b6-15 0.282 830 0.000 012 0.000 665 0.000 005 0.017 643 0.000 234 2.1 9.1 593 700 -0.98 P01-b6-16 0.282 866 0.000 012 0.000 845 0.000 017 0.022 197 0.000 535 3.3 10.3 544 632 -0.97 P01-b6-17 0.282 843 0.000 009 0.000 400 0.000 000 0.009 715 0.000 031 2.5 9.7 571 672 -0.99 P01-b6-18 0.282 887 0.000 013 0.001 395 0.000 055 0.037 661 0.001 570 4.1 10.9 523 599 -0.96 P01-b6-19 0.282 886 0.000 016 0.001 314 0.000 015 0.036 360 0.000 526 4.0 10.9 523 599 -0.96 表 3 内蒙古西乌旗地区南部侵入岩主量元素 (%) 分析结果
Table 3. Major oxide (%) composition of intrusions from the south of Xiwuqi, Inner Mongolia
样号 SiO2 TiO2 Al2O3 Fe2O3 FeO MnO MgO CaO Na2O K2O P2O5 LOI Total P01-b1 55.05 0.597 13.06 2.52 5.4 0.137 8.53 10.00 1.98 0.841 0.077 1.96 99.30 P01-b2 54.04 0.551 13.52 2.60 5.5 0.142 8.58 10.14 2.01 1.010 0.075 2.01 99.31 P01-b3 54.59 0.591 12.96 2.89 5.05 0.138 8.69 10.82 1.83 0.715 0.077 1.86 99.36 P01-b6 54.16 0.565 13.17 2.87 4.95 0.139 8.62 10.96 2.08 0.723 0.079 1.91 99.39 XW01-b1 65.97 0.802 16.16 1.31 4.15 0.049 1.36 2.22 3.37 3.620 0.237 0.86 99.52 XW01-b2 63.62 0.809 16.75 1.94 4.80 0.076 1.96 1.76 3.02 3.620 0.197 1.59 99.42 XW01-b3 63.52 0.773 16.37 1.73 4.75 0.074 1.91 1.66 2.82 3.670 0.185 2.65 99.41 XW01-b7 65.43 0.800 16.54 1.48 3.61 0.060 1.55 1.92 3.25 4.170 0.250 0.85 99.06 XW03-b1 68.74 0.530 15.78 0.72 2.75 0.040 0.92 1.67 3.69 4.150 0.210 0.65 99.20 XW03-b3 68.69 0.540 15.86 0.73 2.80 0.040 0.93 1.71 3.76 3.940 0.210 0.62 99.21 XW03-b4 68.93 0.500 15.79 0.88 2.44 0.040 0.87 1.74 3.70 4.140 0.210 0.57 99.24 XW03-b5 68.18 0.550 15.49 0.89 2.68 0.040 0.92 1.73 3.62 4.130 0.210 0.67 98.44 XW09-b1 68.06 0.520 15.27 0.64 2.71 0.050 1.44 2.45 3.68 3.140 0.140 1.65 98.10 XW09-b2 69.17 0.530 15.12 0.45 2.78 0.050 1.40 1.87 3.50 3.500 0.140 1.08 98.51 XW09-b4 68.14 0.600 15.3 0.61 3.04 0.060 1.60 2.44 3.69 2.940 0.140 1.18 98.56 XW09-b6 69.59 0.520 15.28 0.64 2.68 0.050 1.40 2.02 3.56 3.330 0.130 1.05 99.20 Mg#=100×(MgO/40.304)/(MgO/40.304+Fe2O3/159.691×2+FeO/71.846);标准化公式:oxide=(100-total)×oxide/total+oxide (Le Maitre, 2002)(单位:%). 表 4 内蒙古西乌旗地区南部侵入岩微量元素 (10-6) 分析结果
Table 4. Trace elements (10-6) composition of intrusions from the south of Xiwuqi, Inner Mongolia
P01-b1 P01-b2 P01-b3 P01-b6 XW01-b1 XW01-b2 XW01-b3 XW01-b7 XW03-b1 XW03-b3 XW03-b4 XW03-b5 XW09-b1 XW09-b2 XW09-b4 XW09-b6 La 6.10 5.35 5.70 5.30 51.20 41.90 42.00 32.26 37.98 37.40 36.90 33.26 27.63 28.34 28.30 26.26 Ce 13.10 12.30 12.80 11.80 101.00 82.30 82.30 74.47 85.64 83.12 82.71 75.15 57.28 60.47 59.40 53.51 Pr 1.79 1.79 1.83 1.70 13.00 10.30 10.20 9.31 10.39 9.97 9.99 9.15 6.79 7.09 7.09 6.80 Nd 8.05 8.39 8.28 7.80 51.50 39.80 39.50 38.40 43.34 41.84 41.38 38.62 27.57 28.82 29.50 27.88 Sm 2.04 2.19 2.06 2.00 10.10 7.40 7.32 7.81 8.87 8.45 8.25 7.99 5.47 5.79 5.70 5.84 Eu 0.64 0.69 0.66 0.63 1.46 1.38 1.35 1.37 1.11 1.05 1.10 0.95 0.92 0.91 0.93 0.96 Gd 2.26 2.44 2.28 2.30 8.29 6.26 5.89 7.15 8.15 7.65 7.40 7.13 5.14 5.37 5.42 5.62 Tb 0.47 0.51 0.49 0.48 1.36 1.07 1.02 1.11 1.25 1.16 1.16 1.08 0.87 0.95 0.91 0.96 Dy 2.74 3.05 2.85 2.78 6.39 5.73 5.13 6.38 6.91 6.25 6.34 6.03 5.07 5.61 5.48 5.96 Ho 0.55 0.61 0.56 0.55 1.02 0.88 0.82 1.16 1.23 1.07 1.12 1.06 0.96 1.10 1.06 1.15 Er 1.68 1.85 1.69 1.66 2.70 2.72 2.16 3.28 3.37 2.90 2.98 2.96 2.87 3.17 3.07 3.37 Tm 0.27 0.31 0.28 0.28 0.41 0.37 0.34 0.48 0.49 0.43 0.43 0.43 0.43 0.50 0.48 0.53 Yb 1.78 2.01 1.85 1.85 2.54 2.59 2.13 2.89 3.02 2.54 2.77 2.65 2.72 3.22 2.94 3.32 Lu 0.27 0.31 0.27 0.28 0.35 0.35 0.31 0.46 0.49 0.40 0.43 0.41 0.44 0.52 0.48 0.54 Y 15.40 17.10 15.70 15.60 28.10 24.40 22.40 31.16 32.37 29.11 29.47 29.50 25.95 28.92 28.18 31.01 Rb 22.10 30.10 17.00 18.40 114.00 116.00 118.00 130.00 141.00 143.00 142.00 146.00 103.00 111.00 107.00 108.00 Ba 112.00 154.00 121.00 131.00 1 078.00 941.00 990.00 1 062.00 837.00 755.00 873.00 863.00 525.00 543.00 586.00 598.00 Hf 1.39 1.44 1.41 1.40 2.12 3.23 2.69 8.82 9.89 10.08 9.25 10.04 7.66 7.10 7.97 6.80 Ta 0.14 0.14 0.14 0.14 0.69 0.66 0.71 0.90 1.24 1.31 1.06 1.24 0.75 0.89 0.78 0.90 Pb 3.69 5.12 4.60 3.75 23.70 22.30 22.00 26.04 24.71 24.62 23.30 24.44 18.57 18.59 16.31 20.83 Th 1.14 0.86 1.42 0.89 17.80 13.50 13.50 11.98 13.77 12.64 11.95 13.41 9.33 9.76 9.25 10.51 U 0.33 0.31 0.52 0.29 1.69 2.43 2.23 1.62 1.72 1.65 1.59 1.86 1.31 1.40 1.19 2.11 Nb 1.97 2.00 2.05 1.84 13.70 13.40 14.00 19.29 16.51 17.03 16.29 17.90 12.28 12.10 13.28 12.72 Sr 232.00 251.00 245.00 230.00 233.00 251.00 263.00 206.00 156.00 158.00 162.00 156.00 136.00 135.00 144.00 131.00 Zr 30.00 32.40 30.70 32.40 85.00 125.00 103.00 273.00 251.00 260.00 245.00 259.00 179.00 178.00 193.00 170.00 Cr 544.00 530.00 546.00 535.00 27.30 51.10 49.10 31.30 14.70 16.80 12.70 15.10 30.70 29.00 30.80 30.60 Ni 113.00 112.00 114.00 116.00 13.00 21.10 19.70 15.14 9.64 9.09 9.46 9.13 14.16 13.66 13.22 14.32 -
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