Earth Science Frontiers ›› 2020, Vol. 27 ›› Issue (2): 420-441.DOI: 10.13745/j.esf.sf.2020.3.30
Received:
2020-03-02
Revised:
2020-03-10
Online:
2020-03-25
Published:
2020-03-25
CLC Number:
PENG Runmin, WANG Jianping. Confirmation and metallogenesis of the Neoproterozoic rift in the western section of the northern margin of the North China Craton[J]. Earth Science Frontiers, 2020, 27(2): 420-441.
Fig.3 (a) Field outcrop of quartzite with meta-bedding and (b) micrograph of quartzite sample 17T3 from the Liuhongwan Formation of the Zha'ertaishan Group in the Tanyaokou district
测点 | wB/10-6 | Th/U | 同位素比值及误差 | 同位素年龄及误差/Ma | 不谐 和度 /% | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Th | U | | 1σ | | 1σ | | 1σ | | 1σ | | 1σ | | 1σ | |||
A01 | 97 | 178 | 0.55 | 0.159 2 | 0.003 1 | 10.445 9 | 0.113 2 | 0.475 8 | 0.005 3 | 2 447 | 32 | 2 475 | 10 | 2 509 | 23 | 3 |
A02 | 108 | 152 | 0.71 | 0.163 5 | 0.003 2 | 10.906 7 | 0.118 5 | 0.483 5 | 0.005 4 | 2 493 | 32 | 2 515 | 10 | 2 543 | 23 | 2 |
A03 | 79 | 168 | 0.47 | 0.109 5 | 0.002 1 | 5.356 0 | 0.060 0 | 0.354 7 | 0.003 9 | 1 791 | 35 | 1 878 | 10 | 1 957 | 19 | 9 |
A04 | 104 | 104 | 1.01 | 0.121 0 | 0.002 4 | 6.522 3 | 0.073 2 | 0.390 8 | 0.004 4 | 1 971 | 35 | 2 049 | 10 | 2 126 | 20 | 8 |
A05 | 33 | 120 | 0.28 | 0.115 7 | 0.002 3 | 5.813 0 | 0.065 0 | 0.364 3 | 0.004 0 | 1 891 | 35 | 1 948 | 10 | 2 003 | 19 | 6 |
A06 | 141 | 300 | 0.47 | 0.107 7 | 0.002 1 | 4.801 8 | 0.052 2 | 0.323 4 | 0.003 6 | 1 760 | 35 | 1 785 | 9 | 1 807 | 17 | 3 |
A07 | 114 | 405 | 0.28 | 0.107 3 | 0.002 1 | 5.203 9 | 0.055 4 | 0.351 8 | 0.003 9 | 1 753 | 35 | 1 853 | 9 | 1 943 | 18 | 11 |
A08 | 159 | 348 | 0.46 | 0.114 3 | 0.002 2 | 6.068 2 | 0.064 5 | 0.385 1 | 0.004 2 | 1 868 | 34 | 1 986 | 9 | 2 100 | 20 | 12 |
A09 | 35 | 106 | 0.33 | 0.106 5 | 0.002 1 | 4.943 3 | 0.056 6 | 0.336 8 | 0.003 8 | 1 740 | 36 | 1 810 | 10 | 1 871 | 18 | 8 |
A10 | 219 | 246 | 0.89 | 0.108 1 | 0.002 1 | 4.869 1 | 0.052 7 | 0.326 8 | 0.003 6 | 1 767 | 35 | 1 797 | 9 | 1 823 | 17 | 3 |
A11 | 202 | 241 | 0.84 | 0.106 9 | 0.002 1 | 5.204 4 | 0.055 9 | 0.353 1 | 0.003 9 | 1 748 | 35 | 1 853 | 9 | 1 949 | 18 | 12 |
A12 | 57 | 116 | 0.49 | 0.162 6 | 0.003 1 | 9.825 3 | 0.106 7 | 0.438 4 | 0.004 8 | 2 483 | 32 | 2 419 | 10 | 2 343 | 22 | -6 |
A13 | 47 | 333 | 0.14 | 0.152 9 | 0.002 9 | 9.646 3 | 0.101 1 | 0.457 6 | 0.005 0 | 2 379 | 32 | 2 402 | 10 | 2 429 | 22 | 2 |
A14 | 46 | 110 | 0.42 | 0.166 6 | 0.003 2 | 11.364 9 | 0.123 9 | 0.494 8 | 0.005 5 | 2 524 | 32 | 2 554 | 10 | 2 592 | 24 | 3 |
A15 | 109 | 975 | 0.11 | 0.106 7 | 0.002 0 | 4.865 1 | 0.051 1 | 0.330 8 | 0.003 6 | 1 744 | 35 | 1 796 | 9 | 1 842 | 17 | 6 |
A16 | 318 | 224 | 1.42 | 0.151 8 | 0.002 9 | 8.915 8 | 0.094 1 | 0.426 1 | 0.004 7 | 2 366 | 32 | 2 329 | 10 | 2 288 | 21 | -3 |
A17 | 111 | 110 | 1.02 | 0.156 7 | 0.003 0 | 10.250 7 | 0.110 3 | 0.474 7 | 0.005 2 | 2 420 | 32 | 2 458 | 10 | 2 504 | 23 | 3 |
A18 | 357 | 259 | 1.38 | 0.106 7 | 0.002 0 | 5.226 4 | 0.055 4 | 0.355 3 | 0.003 9 | 1 744 | 35 | 1 857 | 9 | 1 960 | 18 | 12 |
A19 | 61 | 83 | 0.74 | 0.106 0 | 0.002 1 | 5.028 5 | 0.056 8 | 0.344 1 | 0.003 8 | 1 732 | 35 | 1 824 | 10 | 1 907 | 18 | 10 |
A20 | 154 | 496 | 0.31 | 0.107 1 | 0.002 0 | 5.150 7 | 0.053 5 | 0.348 8 | 0.003 8 | 1 751 | 34 | 1 845 | 9 | 1 929 | 18 | 10 |
A21 | 135 | 205 | 0.66 | 0.107 5 | 0.002 1 | 5.063 2 | 0.053 8 | 0.341 8 | 0.003 7 | 1 757 | 35 | 1 830 | 9 | 1 895 | 18 | 8 |
A22 | 56 | 98 | 0.57 | 0.126 6 | 0.002 4 | 6.981 7 | 0.075 9 | 0.400 0 | 0.004 4 | 2 052 | 34 | 2 109 | 10 | 2 169 | 20 | 6 |
A23 | 49 | 1 084 | 0.04 | 0.103 7 | 0.002 0 | 3.718 5 | 0.038 2 | 0.260 0 | 0.002 8 | 1 692 | 34 | 1 575 | 8 | 1 490 | 14 | -12 |
A24 | 410 | 524 | 0.78 | 0.150 0 | 0.002 8 | 8.953 3 | 0.091 9 | 0.433 0 | 0.004 7 | 2 346 | 32 | 2 333 | 9 | 2 319 | 21 | -1 |
A25 | 42 | 252 | 0.17 | 0.107 1 | 0.002 0 | 5.091 7 | 0.053 3 | 0.344 8 | 0.003 7 | 1 751 | 34 | 1 835 | 9 | 1 910 | 18 | 9 |
C1 | 271 | 644 | 0.42 | 0.112 5 | 0.002 2 | 5.577 3 | 0.060 0 | 0.359 4 | 0.003 9 | 1 841 | 35 | 1 913 | 9 | 1 979 | 19 | 8 |
C2 | 234 | 465 | 0.50 | 0.108 9 | 0.002 1 | 5.157 1 | 0.055 8 | 0.343 6 | 0.003 8 | 1 780 | 35 | 1 846 | 9 | 1 904 | 18 | 7 |
C3 | 267 | 952 | 0.28 | 0.109 6 | 0.002 2 | 5.156 5 | 0.055 4 | 0.341 2 | 0.003 7 | 1 793 | 35 | 1 846 | 9 | 1 892 | 18 | 6 |
C4 | 374 | 278 | 1.34 | 0.161 0 | 0.003 2 | 10.398 0 | 0.112 8 | 0.468 2 | 0.005 1 | 2 467 | 33 | 2 471 | 10 | 2 476 | 23 | 0 |
C5 | 61 | 726 | 0.08 | 0.109 8 | 0.002 2 | 5.274 1 | 0.056 9 | 0.348 3 | 0.003 8 | 1 796 | 35 | 1 865 | 9 | 1 926 | 18 | 7 |
C6 | 698 | 840 | 0.83 | 0.108 4 | 0.002 1 | 4.739 0 | 0.051 1 | 0.317 0 | 0.003 5 | 1 773 | 35 | 1 774 | 9 | 1 775 | 17 | 0 |
C7 | 165 | 862 | 0.19 | 0.156 8 | 0.003 1 | 10.503 9 | 0.112 8 | 0.485 8 | 0.005 3 | 2 421 | 33 | 2 480 | 10 | 2 553 | 23 | 5 |
C8 | 230 | 639 | 0.36 | 0.114 8 | 0.002 3 | 5.762 7 | 0.062 5 | 0.363 9 | 0.004 0 | 1 877 | 35 | 1 941 | 9 | 2 001 | 19 | 7 |
C9 | 117 | 633 | 0.18 | 0.114 8 | 0.002 3 | 5.798 5 | 0.062 9 | 0.366 4 | 0.004 0 | 1 876 | 35 | 1 946 | 9 | 2 012 | 19 | 7 |
C10 | 245 | 597 | 0.41 | 0.110 9 | 0.002 2 | 5.358 8 | 0.058 3 | 0.350 4 | 0.003 8 | 1 814 | 35 | 1 878 | 9 | 1 937 | 18 | 7 |
C11 | 98 | 572 | 0.17 | 0.113 7 | 0.002 3 | 5.415 4 | 0.059 0 | 0.345 5 | 0.003 8 | 1 859 | 35 | 1 887 | 9 | 1 913 | 18 | 3 |
C12 | 61 | 212 | 0.29 | 0.110 5 | 0.002 2 | 5.386 8 | 0.060 5 | 0.353 4 | 0.003 9 | 1 808 | 36 | 1 883 | 10 | 1 951 | 19 | 8 |
C13 | 61 | 362 | 0.17 | 0.111 9 | 0.002 2 | 5.548 4 | 0.061 0 | 0.359 7 | 0.003 9 | 1 830 | 36 | 1 908 | 9 | 1 981 | 19 | 8 |
C14 | 174 | 381 | 0.46 | 0.112 2 | 0.002 2 | 5.418 5 | 0.059 7 | 0.350 4 | 0.003 8 | 1 835 | 36 | 1 888 | 9 | 1 936 | 18 | 6 |
C15 | 227 | 516 | 0.44 | 0.110 7 | 0.002 2 | 5.163 4 | 0.056 6 | 0.338 3 | 0.003 7 | 1 811 | 36 | 1 847 | 9 | 1 879 | 18 | 4 |
C16 | 78 | 121 | 0.64 | 0.115 9 | 0.002 3 | 5.610 2 | 0.064 5 | 0.351 1 | 0.003 9 | 1 894 | 36 | 1 918 | 10 | 1 940 | 19 | 2 |
C17 | 217 | 545 | 0.40 | 0.111 3 | 0.002 2 | 5.447 5 | 0.059 8 | 0.355 0 | 0.003 9 | 1 820 | 36 | 1 892 | 9 | 1 959 | 19 | 8 |
C18 | 189 | 358 | 0.53 | 0.111 0 | 0.002 2 | 5.372 6 | 0.059 6 | 0.350 9 | 0.003 9 | 1 816 | 36 | 1 881 | 9 | 1 939 | 18 | 7 |
C19 | 103 | 620 | 0.17 | 0.110 9 | 0.002 2 | 5.221 0 | 0.057 3 | 0.341 5 | 0.003 7 | 1 814 | 36 | 1 856 | 9 | 1 894 | 18 | 4 |
C20 | 129 | 691 | 0.19 | 0.108 3 | 0.002 1 | 5.320 1 | 0.058 0 | 0.356 2 | 0.003 9 | 1 770 | 35 | 1 872 | 9 | 1 964 | 19 | 11 |
C21 | 94 | 358 | 0.26 | 0.111 4 | 0.002 2 | 5.360 1 | 0.058 3 | 0.348 8 | 0.003 9 | 1 822 | 35 | 1 879 | 9 | 1 929 | 18 | 6 |
C22 | 439 | 457 | 0.96 | 0.157 9 | 0.003 1 | 10.136 0 | 0.111 0 | 0.465 5 | 0.005 2 | 2 433 | 33 | 2 447 | 10 | 2 464 | 23 | 1 |
C23 | 347 | 456 | 0.76 | 0.156 9 | 0.003 0 | 10.062 3 | 0.108 5 | 0.464 9 | 0.005 1 | 2 422 | 33 | 2 441 | 10 | 2 461 | 23 | 2 |
C24 | 257 | 706 | 0.36 | 0.108 5 | 0.002 1 | 5.186 6 | 0.055 6 | 0.346 4 | 0.003 8 | 1 775 | 35 | 1 850 | 9 | 1 918 | 18 | 8 |
C25 | 174 | 600 | 0.29 | 0.107 9 | 0.002 1 | 5.378 2 | 0.057 8 | 0.361 5 | 0.004 0 | 1 764 | 35 | 1 881 | 9 | 1 989 | 19 | 13 |
Table 1 LA-ICP-MS zircon U-Pb dating results of quartzite from Liuhongwan Formation of Zha'ertaishan Group in the Tanyaokou deposit,Langshan,Inner Mongolia
测点 | wB/10-6 | Th/U | 同位素比值及误差 | 同位素年龄及误差/Ma | 不谐 和度 /% | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Th | U | | 1σ | | 1σ | | 1σ | | 1σ | | 1σ | | 1σ | |||
A01 | 97 | 178 | 0.55 | 0.159 2 | 0.003 1 | 10.445 9 | 0.113 2 | 0.475 8 | 0.005 3 | 2 447 | 32 | 2 475 | 10 | 2 509 | 23 | 3 |
A02 | 108 | 152 | 0.71 | 0.163 5 | 0.003 2 | 10.906 7 | 0.118 5 | 0.483 5 | 0.005 4 | 2 493 | 32 | 2 515 | 10 | 2 543 | 23 | 2 |
A03 | 79 | 168 | 0.47 | 0.109 5 | 0.002 1 | 5.356 0 | 0.060 0 | 0.354 7 | 0.003 9 | 1 791 | 35 | 1 878 | 10 | 1 957 | 19 | 9 |
A04 | 104 | 104 | 1.01 | 0.121 0 | 0.002 4 | 6.522 3 | 0.073 2 | 0.390 8 | 0.004 4 | 1 971 | 35 | 2 049 | 10 | 2 126 | 20 | 8 |
A05 | 33 | 120 | 0.28 | 0.115 7 | 0.002 3 | 5.813 0 | 0.065 0 | 0.364 3 | 0.004 0 | 1 891 | 35 | 1 948 | 10 | 2 003 | 19 | 6 |
A06 | 141 | 300 | 0.47 | 0.107 7 | 0.002 1 | 4.801 8 | 0.052 2 | 0.323 4 | 0.003 6 | 1 760 | 35 | 1 785 | 9 | 1 807 | 17 | 3 |
A07 | 114 | 405 | 0.28 | 0.107 3 | 0.002 1 | 5.203 9 | 0.055 4 | 0.351 8 | 0.003 9 | 1 753 | 35 | 1 853 | 9 | 1 943 | 18 | 11 |
A08 | 159 | 348 | 0.46 | 0.114 3 | 0.002 2 | 6.068 2 | 0.064 5 | 0.385 1 | 0.004 2 | 1 868 | 34 | 1 986 | 9 | 2 100 | 20 | 12 |
A09 | 35 | 106 | 0.33 | 0.106 5 | 0.002 1 | 4.943 3 | 0.056 6 | 0.336 8 | 0.003 8 | 1 740 | 36 | 1 810 | 10 | 1 871 | 18 | 8 |
A10 | 219 | 246 | 0.89 | 0.108 1 | 0.002 1 | 4.869 1 | 0.052 7 | 0.326 8 | 0.003 6 | 1 767 | 35 | 1 797 | 9 | 1 823 | 17 | 3 |
A11 | 202 | 241 | 0.84 | 0.106 9 | 0.002 1 | 5.204 4 | 0.055 9 | 0.353 1 | 0.003 9 | 1 748 | 35 | 1 853 | 9 | 1 949 | 18 | 12 |
A12 | 57 | 116 | 0.49 | 0.162 6 | 0.003 1 | 9.825 3 | 0.106 7 | 0.438 4 | 0.004 8 | 2 483 | 32 | 2 419 | 10 | 2 343 | 22 | -6 |
A13 | 47 | 333 | 0.14 | 0.152 9 | 0.002 9 | 9.646 3 | 0.101 1 | 0.457 6 | 0.005 0 | 2 379 | 32 | 2 402 | 10 | 2 429 | 22 | 2 |
A14 | 46 | 110 | 0.42 | 0.166 6 | 0.003 2 | 11.364 9 | 0.123 9 | 0.494 8 | 0.005 5 | 2 524 | 32 | 2 554 | 10 | 2 592 | 24 | 3 |
A15 | 109 | 975 | 0.11 | 0.106 7 | 0.002 0 | 4.865 1 | 0.051 1 | 0.330 8 | 0.003 6 | 1 744 | 35 | 1 796 | 9 | 1 842 | 17 | 6 |
A16 | 318 | 224 | 1.42 | 0.151 8 | 0.002 9 | 8.915 8 | 0.094 1 | 0.426 1 | 0.004 7 | 2 366 | 32 | 2 329 | 10 | 2 288 | 21 | -3 |
A17 | 111 | 110 | 1.02 | 0.156 7 | 0.003 0 | 10.250 7 | 0.110 3 | 0.474 7 | 0.005 2 | 2 420 | 32 | 2 458 | 10 | 2 504 | 23 | 3 |
A18 | 357 | 259 | 1.38 | 0.106 7 | 0.002 0 | 5.226 4 | 0.055 4 | 0.355 3 | 0.003 9 | 1 744 | 35 | 1 857 | 9 | 1 960 | 18 | 12 |
A19 | 61 | 83 | 0.74 | 0.106 0 | 0.002 1 | 5.028 5 | 0.056 8 | 0.344 1 | 0.003 8 | 1 732 | 35 | 1 824 | 10 | 1 907 | 18 | 10 |
A20 | 154 | 496 | 0.31 | 0.107 1 | 0.002 0 | 5.150 7 | 0.053 5 | 0.348 8 | 0.003 8 | 1 751 | 34 | 1 845 | 9 | 1 929 | 18 | 10 |
A21 | 135 | 205 | 0.66 | 0.107 5 | 0.002 1 | 5.063 2 | 0.053 8 | 0.341 8 | 0.003 7 | 1 757 | 35 | 1 830 | 9 | 1 895 | 18 | 8 |
A22 | 56 | 98 | 0.57 | 0.126 6 | 0.002 4 | 6.981 7 | 0.075 9 | 0.400 0 | 0.004 4 | 2 052 | 34 | 2 109 | 10 | 2 169 | 20 | 6 |
A23 | 49 | 1 084 | 0.04 | 0.103 7 | 0.002 0 | 3.718 5 | 0.038 2 | 0.260 0 | 0.002 8 | 1 692 | 34 | 1 575 | 8 | 1 490 | 14 | -12 |
A24 | 410 | 524 | 0.78 | 0.150 0 | 0.002 8 | 8.953 3 | 0.091 9 | 0.433 0 | 0.004 7 | 2 346 | 32 | 2 333 | 9 | 2 319 | 21 | -1 |
A25 | 42 | 252 | 0.17 | 0.107 1 | 0.002 0 | 5.091 7 | 0.053 3 | 0.344 8 | 0.003 7 | 1 751 | 34 | 1 835 | 9 | 1 910 | 18 | 9 |
C1 | 271 | 644 | 0.42 | 0.112 5 | 0.002 2 | 5.577 3 | 0.060 0 | 0.359 4 | 0.003 9 | 1 841 | 35 | 1 913 | 9 | 1 979 | 19 | 8 |
C2 | 234 | 465 | 0.50 | 0.108 9 | 0.002 1 | 5.157 1 | 0.055 8 | 0.343 6 | 0.003 8 | 1 780 | 35 | 1 846 | 9 | 1 904 | 18 | 7 |
C3 | 267 | 952 | 0.28 | 0.109 6 | 0.002 2 | 5.156 5 | 0.055 4 | 0.341 2 | 0.003 7 | 1 793 | 35 | 1 846 | 9 | 1 892 | 18 | 6 |
C4 | 374 | 278 | 1.34 | 0.161 0 | 0.003 2 | 10.398 0 | 0.112 8 | 0.468 2 | 0.005 1 | 2 467 | 33 | 2 471 | 10 | 2 476 | 23 | 0 |
C5 | 61 | 726 | 0.08 | 0.109 8 | 0.002 2 | 5.274 1 | 0.056 9 | 0.348 3 | 0.003 8 | 1 796 | 35 | 1 865 | 9 | 1 926 | 18 | 7 |
C6 | 698 | 840 | 0.83 | 0.108 4 | 0.002 1 | 4.739 0 | 0.051 1 | 0.317 0 | 0.003 5 | 1 773 | 35 | 1 774 | 9 | 1 775 | 17 | 0 |
C7 | 165 | 862 | 0.19 | 0.156 8 | 0.003 1 | 10.503 9 | 0.112 8 | 0.485 8 | 0.005 3 | 2 421 | 33 | 2 480 | 10 | 2 553 | 23 | 5 |
C8 | 230 | 639 | 0.36 | 0.114 8 | 0.002 3 | 5.762 7 | 0.062 5 | 0.363 9 | 0.004 0 | 1 877 | 35 | 1 941 | 9 | 2 001 | 19 | 7 |
C9 | 117 | 633 | 0.18 | 0.114 8 | 0.002 3 | 5.798 5 | 0.062 9 | 0.366 4 | 0.004 0 | 1 876 | 35 | 1 946 | 9 | 2 012 | 19 | 7 |
C10 | 245 | 597 | 0.41 | 0.110 9 | 0.002 2 | 5.358 8 | 0.058 3 | 0.350 4 | 0.003 8 | 1 814 | 35 | 1 878 | 9 | 1 937 | 18 | 7 |
C11 | 98 | 572 | 0.17 | 0.113 7 | 0.002 3 | 5.415 4 | 0.059 0 | 0.345 5 | 0.003 8 | 1 859 | 35 | 1 887 | 9 | 1 913 | 18 | 3 |
C12 | 61 | 212 | 0.29 | 0.110 5 | 0.002 2 | 5.386 8 | 0.060 5 | 0.353 4 | 0.003 9 | 1 808 | 36 | 1 883 | 10 | 1 951 | 19 | 8 |
C13 | 61 | 362 | 0.17 | 0.111 9 | 0.002 2 | 5.548 4 | 0.061 0 | 0.359 7 | 0.003 9 | 1 830 | 36 | 1 908 | 9 | 1 981 | 19 | 8 |
C14 | 174 | 381 | 0.46 | 0.112 2 | 0.002 2 | 5.418 5 | 0.059 7 | 0.350 4 | 0.003 8 | 1 835 | 36 | 1 888 | 9 | 1 936 | 18 | 6 |
C15 | 227 | 516 | 0.44 | 0.110 7 | 0.002 2 | 5.163 4 | 0.056 6 | 0.338 3 | 0.003 7 | 1 811 | 36 | 1 847 | 9 | 1 879 | 18 | 4 |
C16 | 78 | 121 | 0.64 | 0.115 9 | 0.002 3 | 5.610 2 | 0.064 5 | 0.351 1 | 0.003 9 | 1 894 | 36 | 1 918 | 10 | 1 940 | 19 | 2 |
C17 | 217 | 545 | 0.40 | 0.111 3 | 0.002 2 | 5.447 5 | 0.059 8 | 0.355 0 | 0.003 9 | 1 820 | 36 | 1 892 | 9 | 1 959 | 19 | 8 |
C18 | 189 | 358 | 0.53 | 0.111 0 | 0.002 2 | 5.372 6 | 0.059 6 | 0.350 9 | 0.003 9 | 1 816 | 36 | 1 881 | 9 | 1 939 | 18 | 7 |
C19 | 103 | 620 | 0.17 | 0.110 9 | 0.002 2 | 5.221 0 | 0.057 3 | 0.341 5 | 0.003 7 | 1 814 | 36 | 1 856 | 9 | 1 894 | 18 | 4 |
C20 | 129 | 691 | 0.19 | 0.108 3 | 0.002 1 | 5.320 1 | 0.058 0 | 0.356 2 | 0.003 9 | 1 770 | 35 | 1 872 | 9 | 1 964 | 19 | 11 |
C21 | 94 | 358 | 0.26 | 0.111 4 | 0.002 2 | 5.360 1 | 0.058 3 | 0.348 8 | 0.003 9 | 1 822 | 35 | 1 879 | 9 | 1 929 | 18 | 6 |
C22 | 439 | 457 | 0.96 | 0.157 9 | 0.003 1 | 10.136 0 | 0.111 0 | 0.465 5 | 0.005 2 | 2 433 | 33 | 2 447 | 10 | 2 464 | 23 | 1 |
C23 | 347 | 456 | 0.76 | 0.156 9 | 0.003 0 | 10.062 3 | 0.108 5 | 0.464 9 | 0.005 1 | 2 422 | 33 | 2 441 | 10 | 2 461 | 23 | 2 |
C24 | 257 | 706 | 0.36 | 0.108 5 | 0.002 1 | 5.186 6 | 0.055 6 | 0.346 4 | 0.003 8 | 1 775 | 35 | 1 850 | 9 | 1 918 | 18 | 8 |
C25 | 174 | 600 | 0.29 | 0.107 9 | 0.002 1 | 5.378 2 | 0.057 8 | 0.361 5 | 0.004 0 | 1 764 | 35 | 1 881 | 9 | 1 989 | 19 | 13 |
Fig.5 Comparison of detrital zircon U-Pb age patterns among the Liuhongwan Formations in the Tanyaokou, Zha'ertaishan (adapted from [30]) and southwestern Langshan (adapted from [29]) districts
Fig.6 Photographs(a,b) and micrograph(c) of drill core of the dolomite marble in Tanyaokou district, and outcrop(d) and micrograph(e) of the calcite marble in the southwest area of the Langshan, Inner Mongolia
序号 | wB/% | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SiO2 | TiO2 | Al2O3 | Fe2O3 | FeO | MnO | MgO | CaO | Na2O | K2O | P2O5 | CO2 | 烧失量 | 合计 | ||
1 | 4.39 | 0.06 | 1.41 | 0.64 | 0.26 | 0.23 | 1.6 | 49.54 | 0.36 | 0.33 | 0.06 | 40.44 | 0.13 | 99.45 |
Table 2 Major element compositions for the calcite marble in the southwest of Langshan
序号 | wB/% | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SiO2 | TiO2 | Al2O3 | Fe2O3 | FeO | MnO | MgO | CaO | Na2O | K2O | P2O5 | CO2 | 烧失量 | 合计 | ||
1 | 4.39 | 0.06 | 1.41 | 0.64 | 0.26 | 0.23 | 1.6 | 49.54 | 0.36 | 0.33 | 0.06 | 40.44 | 0.13 | 99.45 |
Fig.8 (a) Photomicrographs of meta-mafic volcanic rocks and (b) concordia plots of U-Pb isotopic data for zircons (adapted from [51]) from the Huogeqi orefield
Fig.12 Polished thin section (A) and photomicrographs (B-E) of Cu ore in the Huogeqi orefield.Photomicrographs A: laminated structure of Cu ore; B&D: under reflected polarized light; C: under cross polarized light; E: under plane-polarized light. Ccp-chalcopyrite.
序号 | wB/% | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SiO2 | TiO2 | Al2O3 | Fe2O3 | MnO | MgO | CaO | BaO | Na2O | K2O | P2O5 | 烧失量 | 合计 | ||
Ⅰ | 51.99 | 1.36 | 24.4 | 1.59 | 0.043 | 1.42 | 3.38 | 0.10 | 0.452 | 10.74 | 0.789 | 3.28 | 99.53 | |
Ⅱ | 51.58 | 1.22 | 22.64 | 2.33 | 0.111 | 1.53 | 5.05 | 0.15 | 0.526 | 9.26 | 0.255 | 3.94 | 98.59 | |
Ⅲ | 48.31 | 1.7 | 11.86 | 2.62 | <0.004 | 0.313 | 3.34 | 15.13 | 0.17 | 0.37 | 1.52 | 2.78 | 88.84 | |
Ⅳ | 50.89 | 1.9 | 12.37 | 1.7 | <0.004 | 0.236 | 0.95 | 26.16 | 0.16 | 0.38 | 0.4001 | 1.51 | 97.07 |
Table 3 Major element compositions for the siliceous bands with barite and microcrystal feldspar in the Huogeqi orefield
序号 | wB/% | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SiO2 | TiO2 | Al2O3 | Fe2O3 | MnO | MgO | CaO | BaO | Na2O | K2O | P2O5 | 烧失量 | 合计 | ||
Ⅰ | 51.99 | 1.36 | 24.4 | 1.59 | 0.043 | 1.42 | 3.38 | 0.10 | 0.452 | 10.74 | 0.789 | 3.28 | 99.53 | |
Ⅱ | 51.58 | 1.22 | 22.64 | 2.33 | 0.111 | 1.53 | 5.05 | 0.15 | 0.526 | 9.26 | 0.255 | 3.94 | 98.59 | |
Ⅲ | 48.31 | 1.7 | 11.86 | 2.62 | <0.004 | 0.313 | 3.34 | 15.13 | 0.17 | 0.37 | 1.52 | 2.78 | 88.84 | |
Ⅳ | 50.89 | 1.9 | 12.37 | 1.7 | <0.004 | 0.236 | 0.95 | 26.16 | 0.16 | 0.38 | 0.4001 | 1.51 | 97.07 |
Fig.13 Photographs of hand specimens (A) and photomicrographs under reflected polarized light (B,C) of zinc and lead ore in the Huogeqi ore field. Hand specimens show siliceous rocks interbedded with sphalerite and galena and pyrrhotite. Labels: Sp-sphelarite; Ga-galena; Po-pyrrhotite.
Fig.14 Photographs of polished thin section showing δ34S values and locations of pyrrhotite and sphalerite in the Huogeqi copper-lead-zinc polymetallic deposit
Fig.15 Photographs of polished thin section showing δ34S values and locations of pyrite, sphalerite as well as galena in the Huogeqi copper-lead-zinc polymetallic deposit
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