36 1 2017 1 GeologicalScienceandTechnologyInformation Vol.36 No.1 Jan. 2017 doi:10.19509/j.cnki.dzkq.2017.0109,. - [J].,2017,36(1):61-71. - 1,2 2, (1. ( ), 100083;2., 430205) : (PC-C), : Ⅰ Ⅱ Ⅲ LREE,Ce Eu ; LREE,Ce,Eu REE PAAS, REE, V/(V+Ni) U/Th ( ), Nemakit-Daldynian ; ( Tommotian ), Tommotian Atdabanian, -, Ce, Ce, Ce PC-C : ; ; ; ; :P588.2 :A :1000-7849(2017)01-0061-11 -,,,, C O Sr S, [1],,, ( ), 6, (Neop- rotozoicoxydationevent-2,noe-2), [5-9] 2.4Ga GOE (GreatOxydationEvent) Ⅱ Ⅴ Anabarites, ( trisulcatus-protohertzinaanabarica( Nema-,7.2 ~6.3 ) kit-daldynian ) Aldanela yan-, (5.2 ) jiaheensis( Tommotian ) [2-4] [9], - (PC :2016-03-01 : : (12120114053801) : (1990 163.com ),,, E-mail:huya2010@
62 2017 -C),, δ 13 C δ 18 O 87 Sr/ 86 Sr, [6-7,9-15],, (N30 45 13.699,E111 01 55.768 ),, [9], :, 5, 40.3 m, :Ⅰ.,,, Micrhystridium regulare, 12.3m;Ⅱ.,,, Conothecasubcurvata,Anabaritestrisulcatus 1 Protohertzinaanabarica, 2.6m;Ⅲ.,,,, Purelaantiqua, 18.5 m;, Ⅳ.,, 4.7m;Ⅴ.,,, Aldanela yanjiaheensis, 2.2m( 1) 1 Fig.1 2 (a)( [14] ) (b)( ) Geologicalsketchoftheeastern YangtzeGorgesarea,Yichang,SouthChina(a)and stratigraphiccolumnofthestudiedgunshiaosection GY-13~GY-20), Ⅰ 4 (GY- 2 GY-4 GY-5 GY-9),Ⅱ 1 (GY-12); 11 (GS-1~GS-, Ⅰ Ⅱ Ⅲ 11), 20 ( GY-1~GY-11 GY-12
1 : - 63,, DZ/T0223-2001, 5% 31 1~3 δce=3ce N /(2La N +Nd N ),δeu=eu N /(Sm N 0.071mm(200 ), Gd N ) 1/2,δPr=2Pr N /(Ce N +Nd N ) [16], N X (AXIOS) (PAAS),, [17] (ICP-MS-X Series Ⅱ ) 1 Table1 AnalysisresultsofREEsforsamples w B /10-6 La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Y GS-11 SJT 27.70 56.10 5.80 22.40 4.38 1.26 4.53 1.26 3.80 0.76 2.50 0.34 2.28 0.34 25.00 GS-10 SJT 14.90 34.60 4.24 15.30 2.85 1.03 2.77 0.79 2.16 0.42 1.36 0.16 1.11 0.18 15.10 GS-9 SJT 17.80 38.00 4.28 17.20 3.21 1.08 3.24 0.87 2.29 0.46 1.55 0.19 1.32 0.20 15.20 GS-8 SJT 16.00 34.00 3.97 15.90 3.11 1.12 3.12 0.89 2.69 0.55 1.82 0.25 1.80 0.26 17.10 GS-7 SJT 13.30 27.50 3.08 12.40 2.60 0.92 2.71 0.80 2.50 0.54 1.72 0.24 1.68 0.24 19.30 GS-6 SJT 15.60 30.20 3.38 13.00 2.39 0.78 2.47 0.71 2.27 0.46 1.52 0.21 1.48 0.23 15.50 GS-5 SJT 14.70 31.10 3.62 14.60 2.65 0.94 2.70 0.81 2.64 0.57 1.75 0.25 1.65 0.25 19.60 GS-4 SJT 19.90 42.40 4.89 19.30 3.79 2.28 3.82 1.07 3.39 0.70 2.28 0.32 2.17 0.35 21.60 GS-3 SJT 18.20 37.90 4.37 16.50 3.18 0.96 3.23 0.90 2.90 0.60 1.88 0.28 1.90 0.29 18.90 GS-2 SJT 10.90 17.80 1.76 6.03 0.78 0.72 1.54 0.32 0.96 0.24 0.92 0.16 1.16 0.17 6.66 GS-1 SJT 26.00 46.80 6.20 26.10 4.87 1.41 4.85 1.45 4.61 0.96 3.02 0.41 2.74 0.40 36.40 GY-20 YJH-Ⅲ 24.10 31.00 4.83 20.10 3.74 1.05 3.93 1.10 2.89 0.56 2.01 0.23 1.53 0.22 21.30 GY-19 YJH-Ⅲ 24.50 35.10 5.39 23.10 3.89 1.20 4.14 1.15 2.96 0.60 2.06 0.22 1.50 0.21 24.60 GY-18 YJH-Ⅲ 23.20 30.90 5.50 21.00 3.53 1.25 3.92 1.11 2.87 0.57 1.98 0.21 1.36 0.19 26.10 GY-17 YJH-Ⅲ 28.80 35.00 6.28 25.20 4.94 1.52 5.24 1.48 3.94 0.78 2.69 0.30 1.96 0.27 30.40 GY-16 YJH-Ⅲ 30.80 42.90 6.43 27.50 5.09 1.56 5.11 1.45 4.03 0.76 2.55 0.26 1.80 0.25 30.40 GY-15 YJH-Ⅲ 26.70 36.40 5.62 24.30 4.51 1.71 4.72 1.36 3.67 0.73 2.48 0.27 1.87 0.26 28.50 GY-14 YJH-Ⅲ 22.10 32.60 5.09 19.70 3.86 1.19 4.11 1.13 3.05 0.58 1.96 0.22 1.42 0.20 20.70 GY-13 YJH-Ⅲ 34.90 51.30 7.64 31.30 5.64 1.92 6.03 1.66 4.33 0.81 2.79 0.28 2.07 0.29 30.50 GY-12* YJH-Ⅱ 2.64 2.78 0.62 2.76 0.63 0.30 0.64 0.22 0.80 0.18 0.54 0.08 0.50 0.07 6.94 GY-11 YJH-Ⅰ 7.02 8.14 1.04 3.68 0.72 2.55 0.90 0.24 0.90 0.22 0.74 0.15 1.14 0.18 7.14 GY-10 YJH-Ⅰ 12.30 20.80 3.40 14.10 2.93 1.39 3.30 0.93 2.43 0.49 1.68 0.20 1.35 0.19 14.60 GY-9* YJH-Ⅰ 1.00 1.47 0.22 0.85 0.18 0.16 0.25 0.07 0.20 0.04 0.14 0.02 0.12 0.02 1.26 GY-8 YJH-Ⅰ 30.90 50.70 7.15 28.90 5.36 2.42 6.65 1.72 4.20 0.81 3.00 0.32 2.33 0.33 28.90 GY-7 YJH-Ⅰ 10.60 15.00 1.94 7.06 1.28 0.54 1.70 0.42 1.09 0.24 0.89 0.12 0.90 0.12 6.85 GY-6 YJH-Ⅰ 14.30 24.00 3.11 12.00 2.46 0.81 2.94 0.75 1.70 0.34 1.38 0.18 1.25 0.19 9.39 GY-5* YJH-Ⅰ 2.37 4.56 0.63 2.68 0.56 0.22 0.70 0.19 0.46 0.09 0.34 0.04 0.29 0.04 2.30 GY-4* YJH-Ⅰ 1.17 2.04 0.37 1.55 0.35 0.21 0.41 0.12 0.27 0.05 0.18 0.02 0.13 0.02 1.05 GY-3 YJH-Ⅰ 11.20 17.80 2.50 9.93 1.96 0.60 2.45 0.65 1.67 0.35 1.22 0.17 1.17 0.16 9.98 GY-2* YJH-Ⅰ 1.36 2.04 0.34 1.64 0.38 1.32 0.41 0.12 0.25 0.05 0.18 0.02 0.18 0.04 1.10 GY-1 YJH-Ⅰ 13.90 20.60 2.98 12.80 2.40 0.86 2.85 0.76 1.86 0.36 1.35 0.15 1.11 0.15 11.10 :YJH-Ⅰ Ⅰ ;YJH-Ⅱ Ⅱ ;YJH-Ⅲ Ⅲ ;SJT ; * ; ( ) 3 PAAS w( REE) 70.88 10-6,REE+Y 2 Ⅰ Ⅱ 89.88 10-6, PAAS (La/Yb) N 0.69, LREE 184.77 10-6, w( REE),,δCe 0.73,Ce,δEu= 9.18 10-6, 1.29~15.47, Eu ;Ⅲ (La/, Y/Ho Yb) N 1.18,LREE, 33.34,33.17, PAAS Y/Ho 27, δce 0.68, Ce,δEu 55 [18], Al Ti Zr Sc 1.48,Eu (La/Yb) N Th REE ( 4),Al Ti 0.76, LREE,δCe Zr Sc Th REE (R 2 = 0.97,Ce,δEu 1.80,Eu 0.79~0.85),
64 2017 2 Table2 Someanalysisresultsofmajorelementsandtraceelementsforsamples SiO2 Al2O3 Fe2O3 FeO TiO2 MnO wb / % Cu Zn Cr Ni Co Mo Ba V Sc Zr U Th wb / 10-6 GS-11 SJT 37.770 8.450 3.170 3.720 0.446 0.128 22.500 66.70 20.00 63.00 59.90 16.30 31.10 452.00 130.00 20.30 122.00 13.20 9.53 GS-10 SJT 26.670 5.300 1.250 1.690 0.260 0.050 28.650 26.30 15.80 38.10 28.60 8.40 6.54 752.00 63.60 10.60 59.20 3.28 5.41 GS-9 SJT 31.720 6.510 2.570 2.820 0.333 0.068 25.500 46.60 13.40 46.50 48.30 11.00 25.30 626.00 98.70 11.90 75.30 7.30 7.25 GS-8 SJT 59.940 8.660 2.330 1.400 0.403 0.033 14.440 120.00 269.00 72.50 179.00 16.60 84.60 612.00 1080.00 12.30 92.40 23.30 8.39 GS-7 SJT 60.260 5.940 1.440 2.210 0.286 0.030 16.800 132.00 173.00 60.40 279.00 17.90 126.00 478.00 1420.00 8.28 66.60 39.60 5.64 GS-6 SJT 42.950 8.540 1.950 1.850 0.502 0.125 21.800 30.50 35.90 61.00 137.00 11.80 67.10 442.00 109.00 12.00 118.00 30.50 7.22 GS-5 SJT 58.400 6.650 2.980 1.040 0.322 0.031 16.920 162.00 85.80 77.80 307.00 18.00 129.00 519.00 1660.00 9.51 74.80 45.20 6.60 GS-4 SJT 53.910 12.710 3.740 1.710 0.761 0.045 13.210 52.70 38.90 94.30 154.00 18.90 78.80 8240.00 444.00 15.50 159.00 51.40 11.10 GS-3 SJT 61.150 9.710 2.950 1.210 0.465 0.028 12.860 141.00 214.00 95.80 225.00 20.00 114.00 477.00 1450.00 14.20 112.00 29.60 9.99 GS-2 SJT 74.520 6.940 0.085 0.535 0.411 0.006 13.890 16.40 24.00 52.40 236.00 1.42 44.00 704.00 1240.00 8.63 94.00 22.00 4.54 GS-1 SJT 43.910 10.040 5.120 1.470 0.624 0.030 20.450 87.501560.00 94.20 524.00 31.00 400.00 484.00 826.00 14.80 164.00105.00 9.30 GY-20 YJH-Ⅲ 40.130 7.970 2.680 1.270 0.523 0.028 20.650 20.30 18.50 74.80 34.30 6.20 2.31 324.00 46.70 10.20 100.00 2.89 6.32 GY-19 YJH-Ⅲ 38.130 7.350 2.260 1.410 0.495 0.025 21.260 23.50 20.90 73.60 32.40 5.67 1.81 377.00 44.70 9.00 85.40 3.14 5.92 GY-18 YJH-Ⅲ 32.310 6.490 1.910 0.906 0.419 0.020 22.430 22.20 19.30 67.20 36.20 5.40 2.41 654.00 35.80 9.99 77.20 2.89 5.33 GY-17 YJH-Ⅲ 47.600 9.640 2.630 1.660 0.614 0.029 14.410 25.80 23.60 86.60 37.00 7.62 3.78 508.00 64.40 12.90 108.00 5.80 8.04 GY-16 YJH-Ⅲ 49.310 10.150 3.060 1.400 0.633 0.036 13.410 29.40 26.50 91.70 43.50 8.12 3.33 676.00 53.70 16.00 123.00 4.39 9.74 GY-15 YJH-Ⅲ 52.450 9.060 2.640 1.390 0.583 0.028 12.920 26.00 20.70 77.20 30.20 6.52 2.59 958.00 52.10 11.40 95.40 3.62 7.46 GY-14 YJH-Ⅲ 47.140 7.500 2.370 1.070 0.495 0.025 17.170 23.70 24.80 57.50 27.60 5.23 2.67 473.00 41.60 8.79 89.70 3.68 6.40 GY-13 YJH-Ⅲ 48.270 13.230 4.290 1.320 0.891 0.037 11.280 30.50 31.40 101.00 45.10 8.97 3.94 871.00 70.90 12.40 158.00 6.60 11.40 GY-12* YJH-Ⅱ 90.220 0.302 1.180 1.260 0.023 0.036 2.080 26.20 15.80 29.80 10.20 1.64 2.55 135.00 14.30 1.41 3.08 4.31 0.24 GY-11 YJH-Ⅰ 70.380 10.260 4.100 0.794 0.610 0.011 5.700 51.40 19.80 322.00 61.00 10.10 32.90 3740.00 2540.00 14.20 94.60 18.40 7.45 GY-10 YJH-Ⅰ 77.410 7.640 1.120 0.774 0.423 0.006 5.550 17.50 13.20 139.00 12.90 1.05 14.20 723.00 1250.00 9.01 65.90 17.40 4.01 GY-9* YJH-Ⅰ 96.030 0.469 0.226 1.590 0.029 0.035 0.524 18.30 46.60 53.70 13.70 2.34 2.72 116.00 66.10 1.60 4.06 3.51 0.35 GY-8 YJH-Ⅰ 61.990 13.310 2.760 0.901 0.788 0.008 6.960 24.90 12.20 494.00 20.70 3.53 14.90 327.00 958.00 14.70 145.00 20.00 10.80 GY-7 YJH-Ⅰ 37.010 4.840 1.580 1.110 0.360 0.032 25.080 11.80 32.40 116.00 25.80 6.76 4.00 160.00 118.00 8.46 69.20 3.20 4.46 GY-6 YJH-Ⅰ 72.350 9.160 2.530 1.220 0.675 0.018 4.760 22.40 33.30 168.00 37.60 11.50 4.15 305.00 187.00 11.90 129.00 4.30 10.30 GY-5* YJH-Ⅰ 80.010 1.440 0.420 1.410 0.097 0.044 7.350 5.43 8.27 32.60 5.34 2.09 0.68 69.20 28.00 3.40 19.00 0.84 1.19 GY-4* YJH-Ⅰ 96.150 0.429 0.117 1.940 0.034 0.044 0.335 9.97 7.99 26.50 2.61 1.71 1.36 56.00 11.40 1.05 5.94 1.72 0.63 GY-3 YJH-Ⅰ 37.390 6.670 1.580 0.924 0.496 0.022 23.060 14.10 12.50 183.00 22.90 7.37 1.34 163.00 155.00 9.76 85.90 6.28 5.00 GY-2* YJH-Ⅰ 94.980 0.583 1.090 1.030 0.045 0.034 0.816 30.40 21.40 37.40 5.46 1.46 0.99 1170.00 19.20 2.04 7.70 1.70 0.55 GY-1 YJH-Ⅰ 27.560 8.630 2.770 1.580 0.482 0.016 24.760 22.60 16.50 230.00 43.70 10.90 11.20 347.00 114.00 11.20 69.40 9.84 4.70
1 : - 65 3 Table3 Calculatedvaluesofanalyticalresultsforsamples w( REE)/ δce δeu (La/Yb) N Y/Ho V/(V+Ni) U/Th 10-6 VEF UEF CoEF CrEF NiEF CuEF GS-11 SJT 133.450 1.020 1.332 0.897 32.895 0.685 1.385 1.940 9.531 1.586 1.282 2.438 2.986 GS-10 SJT 81.870 0.999 1.726 0.991 35.952 0.690 0.606 1.513 3.776 1.303 1.236 1.856 1.877 GS-9 SJT 91.690 1.004 1.577 0.995 33.043 0.671 1.007 1.912 6.842 1.389 1.228 2.551 2.708 GS-8 SJT 85.480 0.984 1.693 0.656 31.091 0.858 2.77715.72516.415 1.576 1.439 7.108 5.242 GS-7 SJT 70.230 0.991 1.632 0.584 35.741 0.836 7.02130.14340.674 2.478 1.74816.152 8.406 GS-6 SJT 74.700 0.959 1.512 0.778 33.696 0.443 4.224 1.60921.790 1.136 1.228 5.517 1.351 GS-5 SJT 78.230 0.983 1.655 0.658 34.386 0.844 6.84831.47541.469 2.226 2.01215.875 9.215 GS-4 SJT 106.660 0.991 2.822 0.677 30.857 0.742 4.631 4.40524.673 1.223 1.276 4.167 1.568 GS-3 SJT 93.090 0.980 1.410 0.707 31.500 0.866 2.96318.82918.599 1.694 1.696 7.968 5.493 GS-2 SJT 43.460 0.923 3.093 0.694 27.750 0.840 4.84622.52919.341 0.168 1.29811.694 0.894 GS-1 SJT 129.820 0.850 1.366 0.701 37.917 0.612 11.29010.37463.807 2.539 1.61317.948 3.297 GY-20 YJH-Ⅲ 97.290 0.661 1.290 1.163 38.036 0.577 0.457 0.739 2.212 0.640 1.614 1.480 0.963 GY-19 YJH-Ⅲ 106.020 0.705 1.408 1.206 41.000 0.580 0.530 0.767 2.606 0.634 1.722 1.516 1.209 GY-18 YJH-Ⅲ 97.590 0.631 1.582 1.259 45.789 0.497 0.542 0.696 2.717 0.684 1.780 1.918 1.294 GY-17 YJH-Ⅲ 118.400 0.600 1.407 1.085 38.974 0.635 0.721 0.842 3.671 0.650 1.545 1.320 1.012 GY-16 YJH-Ⅲ 130.490 0.702 1.440 1.263 40.000 0.552 0.451 0.667 2.639 0.658 1.553 1.474 1.096 GY-15 YJH-Ⅲ 114.600 0.685 1.745 1.054 39.041 0.633 0.485 0.725 2.438 0.592 1.465 1.146 1.086 GY-14 YJH-Ⅲ 97.210 0.709 1.407 1.149 35.690 0.601 0.575 0.699 2.994 0.573 1.318 1.265 1.195 GY-13 YJH-Ⅲ 150.960 0.725 1.550 1.245 37.654 0.611 0.579 0.676 3.044 0.558 1.313 1.172 0.872 GY-12* YJH-Ⅱ 12.753 0.501 2.225 0.390 38.556 0.584 17.958 5.97087.072 4.46616.96611.61532.817 GY-11 YJH-Ⅰ 27.620 0.67814.917 0.455 32.455 0.977 2.47031.21510.942 0.810 5.396 2.045 1.895 GY-10 YJH-Ⅰ 65.490 0.739 2.105 0.673 29.796 0.990 4.33920.63013.895 0.113 3.128 0.581 0.866 GY-9* YJH-Ⅰ 4.733 0.723 3.552 0.615 31.500 0.828 10.02917.77145.661 4.10319.68710.04514.760 GY-8 YJH-Ⅰ 144.790 0.787 1.909 0.979 35.679 0.979 1.852 9.075 9.168 0.218 6.382 0.535 0.708 GY-7 YJH-Ⅰ 41.900 0.758 1.724 0.869 28.542 0.821 0.717 3.074 4.034 1.149 4.121 1.833 0.922 GY-6 YJH-Ⅰ 65.410 0.830 1.418 0.845 27.618 0.833 0.417 2.574 2.864 1.032 3.154 1.412 0.925 GY-5* YJH-Ⅰ 13.172 0.859 1.655 0.603 25.000 0.840 0.706 2.452 3.559 1.194 3.893 1.275 1.426 GY-4* YJH-Ⅰ 6.888 0.707 2.610 0.664 20.192 0.814 2.730 3.35124.461 3.27810.621 2.092 8.791 GY-3 YJH-Ⅰ 51.830 0.776 1.289 0.707 28.514 0.871 1.256 2.930 5.744 0.909 4.717 1.181 0.800 GY-2* YJH-Ⅰ 8.333 0.69215.747 0.558 22.000 0.779 3.091 4.15317.791 2.05911.030 3.22119.725 GY-1 YJH-Ⅰ 62.130 0.738 1.548 0.924 30.833 0.723 2.094 1.666 6.957 1.039 4.582 1.741 0.991 2 (a) (b)paas Fig.2 PAASshale-normalizedREEdistributionpaternsforsamplesofYanjiaheFormation(a)andShuijingtuoFormation(b) 4 ( ),, [19], 4.1, [20] U V Mo Cr Co
66 2017 4 Al2O3 REE Table4 Correlationcoeficients(R 2 )ofredox-sensitiveelements,someimcompatibleelements,highfield-strengthelements, Al2O3contentandbulkREEforsamples N=31 Al2O3 TiO2 Zr Sc Th V U Ni Mo Co Cr Cu REE Al2O3 1.00 TiO2 0.97 1.00 Zr 0.94 0.94 1.00 Sc 0.88 0.80 0.88 1.00 Th 0.94 0.89 0.95 0.91 1.00 V 0.29 0.15 0.19 0.25 0.23 1.00 U 0.36 0.26 0.48 0.36 0.37 0.49 1.00 Ni 0.26 0.16 0.39 0.29 0.32 0.52 0.92 1.00 Mo 0.24 0.15 0.39 0.29 0.30 0.42 0.96 0.94 1.00 Co 0.47 0.36 0.58 0.60 0.61 0.36 0.81 0.80 0.82 1.00 Cr 0.52 0.52 0.37 0.37 0.37 0.40 0.06-0.11-0.05-0.01 1.00 Cu 0.21 0.03 0.21 0.30 0.35 0.62 0.60 0.72 0.62 0.75-0.08 1.00 REE 0.82 0.79 0.83 0.80 0.85-0.05 0.28 0.23 0.24 0.45 0.20 0.21 1.00, H 2S [21], Ⅱ V/(V+Ni) U/Th [22-25], V/(V+Ni) 0.58,17.96, U/Th V/Cr Ni/Co Ⅲ V/(V+Ni) U/Th 0.59,0.54, ( 3), Al Ti Zr Sc (GS-1~GS-8) V/(V+ Th, Ni) U/Th 0.76,5.58,,, (GS-9~GS-11) V/(V+Ni) U/Th [26] 0.68,1.00,, ( 3) Al Ti, Zr Sc Th,, [30], Al Ti Zr Sc PAAS Th PAAS, [20] 4,, Co Cr, V U Ni Mo Cu, V Ni,, Al,V Ni, (enrichmentfactors,ef) V,Ni,, V/(V+Ni) 1,, [21,27],0.84< V/(V + Ni) [20,31-33], X <0.89, H 2S (EF): X EF=(X/Al) /(X/Al) PAAS ;0.54<V/(V+Ni)<0.82,, [19,29] ;0.46< V/(V+ Ni)< Cr [28] 0.60,,U/ U V Th, Ni Cu Co Zn Cd,U/Th>1.25,0.75<U/Th<,, 1.25,U/Th<0.75,, [29] Ⅰ V/(V+Ni) U/Th [19,34] U V Co Ni 0.86,2.7, Cu, ;
1 : - 67 3 Fig.3 StratigraphicdistributionofreleventcalculationresultsofREEandvariousgeochemicalparametersforsamples U V Co Ni Cu Cu, V Ni Cu, H 2S,,, U V Ni Cu Ⅲ V U Co Cr Ni, Cu,U Cr Ni PAAS, 2.29, U V Ni Cu, 1.54,1.41,1.09,U, V Co [19,20,33], PAAS, 0.73,0.62, Ⅰ V U Co Cr Ni Cu ( 4) 10.17,7.66,0.75,4.50, V U Co Cr Ni Cu 1.33,1.02, PAAS, 16.87,30.85,1.63, U V Co Ni Cu, 1.54,10.80,4.43, PAAS Ⅰ Ⅱ, U V Co Ni Cu, V U Co Cr Ni Cu 5.97,87.07,4.46,16.97,11.61,32.82, V U Co Cr Ni Cu PAAS, U Co Ni 1.79,6.72,1.43,1.25,2.28,2.52, 4 Fig.4 Stratigraphicdistributionoftraceelementenrichmentfactorsforsamples
68 2017, PAAS,, U V Co Ni Cu Ⅰ, Ⅱ, ( 4),,δ 13 C Ⅱ,, Ce,, [35] Nemakit-Daldynian Ce, Ce ;, Tommotian,,, PC-C, Tommotian Atdabanian,, [36], δ 13 C, Ce PC-C, Ce,,,, Ce 4.2 Ce Ce,, Ce, [14], Ce, δ 13 C δ 13 C Ce,, ( 5) 5 δ 13 C carb ( [11]) δce Fig.5 δ 13 C carbprofilesfrom YanjiahesectionandδCeprofilesofsamplesfrom Gunshiaosection 4.3 Al Ti, Al Ti Fe Mn Al/(Al+Fe+Mn),,, [37] Bostr m [38] Adachi [39] Yamamo-, to [40], Al/ Fe Mn Al Ti, (Al+Fe+ Mn) 0.01, Leg32
1 : - 69 0.12, Kamiaso, 0.60 Al/(Al+Fe+Mn) U-Th 0.08~0.34, 0.17, [41], ; Zn-Ni-Co ( 7-b),,Adachi [39] Bostr m [41], Al-Fe- Mn ( 7), Fe/Ti-Al/(Al+Fe+ Mn) (, 6),,, 6 Al-Fe-Mn (a) Fe/Ti-Al/(Al+Fe+Mn) (b)( [42]) Fig.6 DiagramsforsamplesbasedonAl-Fe-Mn(a)andFe/Ti-Al/(Al+Fe+Mn)(b) 7 U-Th (a) Zn-Ni-Co (b)(a [41];b. [43]) Fig.7 DiagramsforsamplesbasedonU-Th(a)andZn-Ni-Co(b) 5 (3) Ce (1) (PC-C), Ce LREE,Ce Eu ; Ce, LREE,Ce,Eu w( REE) PAAS, (4)PC-C w( REE), (2) PC-C, :, [1],,,. - [J].
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