Petrogenesis and Tectonic Implications of the Carboniferous Andesites from Bayingou in the North Tianshan Belt, Xinjiang
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摘要:
北天山增生杂岩带是北天山洋最终闭合的产物，对其中分布的晚古生代火山岩开展详细的地质学、年代学和地球化学研究对恢复古亚洲洋的构造演化历史具有重要的科学意义。笔者选取北天山增生杂岩带巴音沟石炭纪安山岩为研究对象，在详细的野外地质调查基础之上、对其开展系统的岩石学、矿物学、地质年代学以及全岩主微量地球化学综合分析。研究发现：①北天山巴音沟中的这套安山岩具有较低的全岩MgO含量（＜3%），明显区别于典型的高镁安山岩（MgO＞6%），但其具有较高的Mg#值（＞45），结合其微量元素特征，表明安山岩形成于与板块俯冲相关的汇聚板块边缘，其中幔源物质参与了安山岩的形成和演化。②LA-ICP-MS锆石U-Pb加权平均年龄为（324.1±1.1）Ma（MSWD=1.5），代表了巴音沟安山岩的形成时代为早石炭世晚期的霍夫期。文中的北天山石炭纪安山岩是基性下地壳部分熔融形成的长英质熔体和幔源熔体混合的产物。结合区域地质资料，进一步限定了北天山洋在早石炭世晚期可能仍然没有闭合。
Abstract:The Late Paleozoic volcanic rocks in the North Tianshan complex belt are the products of closure of the North Tianshan Ocean, which are important for understanding the Paleozoic evolution history of the Paleo-Asian Ocean. In this study, we present new petrological, mineralogical, geochronological and geochemical data on the Carboniferous Bayingou andesites in the North Tianshan belt, and discuss their petrogenesis and tectonic implications of the andesites. The results show that: ① the andesites belong to the calc-alkaline series that formed in a convergent continental margin setting related to the plate subduction in this study, whereas these andesites have low MgO (＜3%) contents that are different from typical high-Mg andesites (＞6%), whereas the andesites have high Mg# values (＞45), indicating mantle materials participating in the formation of the andesites. ② In-situ LA-ICP-MS zircon U-Pb dating on the andesites of the Bayingou Formation yielded an weighted average age of (324.1±1.1) Ma (MSWD=1.5), representing the emplacement age of the andesites. The Carboniferous andesites were a mixing product of the felsic and mantle-derived melts, and the felsic melts were derived from partial melting of the mafic lower crust in the North Tianshan orogenic belt. Integrated with the previous studies and geological data, this study holds that the Bayingou Carboniferous andesites were generated in a subduction zone or arc-related environment, which further indicates that the North Tianshan Ocean was still not closed in the late Early Carboniferous.
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Keywords:
- North Tianshan belt /
- carboniferous /
- volcanic rocks /
- petrology /
- tectonic setting
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图 2 北天山巴音沟安山岩野外分布照片
Figure 2. Field exposures of the Bayingou andesite rocks in the North Tianshan belt
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图 3 巴音沟组中酸性火山岩显微照片（a～c）和电子背散射图像（d～f）
An. 钙长石；Chl. 绿泥石；Cc. 方解石；Pl. 斜长石；Q. 石英
Figure 3. (a～c) Petrographic and (d～f) BSE pictures of the mid-acid volcanic rocks from the Bayingou Formation
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图 4 安山岩TAS图解（a）（Le et al., 2002）（碱性与亚碱性系列分界线来自Irvine et al.，1971）；安山岩的SiO2 vs. K2O图解（Morrison, 1980）（b）
Figure 4. （a） TAS diagram for the andesite; （b） SiO2 vs. K2O diagram for the andesites
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图 5 北天山巴音沟安山岩全岩主量元素哈克图解
Figure 5. Harker diagrams of the whole-rock major elements for the andesite in the North Tianshan belt
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图 6 北天山巴音沟安山岩微量元素原始地幔标准化蜘蛛网图（a）（标准化值据Sun et al., 1989）和稀土元素球粒陨石标准化分布模式图（b）（标准化值据Boynton., 1984）
Figure 6. （a） Primitive mantle normalized trace element patterns of the andesite from the Bayingou formation in the North Tianshan belt and （b） Chondrite-normalized REE distribution pattern of the andesite from the Bayingou formation in the North Tianshan belt
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图 7 北天山巴音沟安山岩中锆石阴极发光CL图像
Figure 7. Cathodoluminescence (CL) images of the andesite from the Bayingou in the North Tianshan belt
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图 8 北天山巴音沟安山岩中锆石LA-ICP-MS U-Pb谐和图（a）和加权年龄图（b）
Figure 8. (a) Concordia diagram and (b) weighted average age diagram of zircon LA-ICP-MS U-Pb data for the andesite from the Bayingou in the North Tianshan belt
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图 9 北天山巴音沟安山岩岩石地球化学图解 La vs. La/Yb图解（a）（矿物分离结晶模拟据Ersoy et al., 2010）、Mg# vs. SiO2 图解（b）（地壳AFC曲线据Stern et al., 1996）、主量元素成分判别图解（c）（底部据Altherr et al., 2000修）、Y vs. Sr/Y图解（d）（据Tatsumi, 2006）
Figure 9. (a) Petro-geochemical diagrams of the andesite in Bayingou of the North Tianshan belt La vs. La/Yb diagram, (b) Mg# vs. SiO2 diagram, (c) Major element compositional diagram and (d) Y vs. Sr/Y diagram
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图 10 安山岩Ti/100-Zr-Y×3图解（Pearce et al., 1973）
A. 岛弧拉斑玄武岩区；B. MORB、岛弧拉斑玄武岩和钙碱性玄武岩区；C. 钙碱性玄武岩区；D. 板内玄武岩
Figure 10. Ti/100-Zr-Y×3 diagram of the andesite
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图 11 安山岩Th/Yb-Nb/Yb图解（a）（据韩作振等，2018）和安山岩La/Yb-Th/Yb图解（b）（Pearce et al., 1981）
Figure 11. （a） Th/Yb versus Nb/Yb for the andesite and （b） La/Yb vs. Th/Yb diagram for the andesite
表 1 北天山巴音沟安山岩电子探针（EPMA）分析结果（%）
Table 1 Electronic probe microanalyses （EPMA） results of the andesite from the Bayingou in the North Tianshan belt（%）
测点号 矿物名称 SiO2 Na2O Cr2O3 K2O MgO Al2O3 MnO CaO FeO TiO2 NiO Total 2 斜长石 56.915 5.41 0.016 0.149 0.015 27.137 0.027 9.748 0.5 0.047 0.02 99.984 13 60.359 7.042 0.001 0.284 24.648 0.015 6.77 0.309 0.017 99.445 17 63.423 8.101 0.001 0.472 22.686 4.638 0.244 0.002 0.017 99.584 23 58.159 6.047 0.016 0.132 0.047 26.454 8.683 0.493 0.024 100.055 24 56.751 5.489 0.028 0.172 0.018 27.013 0.041 10.027 0.348 0.005 99.892 26 59.989 6.461 0.009 0.272 25.173 0.036 7.326 0.34 0.029 0.022 99.657 40 62.344 7.375 0.001 0.151 0.002 23.767 0.003 5.852 0.142 0.014 0.017 99.668 46 61.304 6.977 0.427 0.015 23.88 0.023 6.641 0.361 0.007 99.635 47 60.685 6.872 0.043 0.295 24.567 0.015 6.659 0.32 0.011 99.467 55 59.994 7.326 0.019 0.955 0.034 23.977 0.003 5.153 0.404 0.042 0.035 97.942 61 60.494 7.136 0.028 1.243 0.052 24.689 0.007 4.968 0.42 0.031 0.03 99.098 65 59.829 7.335 0.009 0.234 0.012 24.754 6.746 0.321 0.036 0.011 99.287 66 58.474 7.152 0.225 25.07 0.012 6.254 0.34 0.009 97.536 76 60.631 7.286 0.018 0.295 0.023 24.165 0.023 6.316 0.324 0.002 99.083 77 57.5 5.238 0.012 0.815 0.049 26.319 8.352 0.533 0.014 98.832 19 钠长石 67.771 10.623 0.053 0.137 0.381 18.761 0.016 0.076 1.146 0.048 99.012 20 68.142 10.075 0.071 0.165 0.391 19.071 0.021 0.043 1.169 0.016 99.164 35 69.394 11.223 0.061 0.019 18.736 0.016 0.02 0.139 99.608 60 69.1 11.565 0.117 0.016 19.12 0.017 0.051 0.193 0.007 100.186 62 68.806 11.525 0.02 0.006 19.131 0.001 0.156 0.062 0.015 99.722 64 67.953 11.335 0.021 0.221 0.029 19.475 0.12 0.125 0.012 99.291 75 68.963 11.078 0.015 0.045 0.007 19.073 0.042 0.06 0.058 99.341 3 绿泥石 30.442 0.069 0.251 0.028 12.129 14.459 0.64 0.502 29.314 0.038 87.872 16 30.737 0.078 0.413 0.029 12.365 14.243 0.577 0.413 28.525 0.051 87.431 31 62.715 8.213 0.048 0.017 18.643 0.036 0.113 0.104 89.889 32 60.968 7.539 0.025 0.037 19.073 0.061 0.154 0.005 87.862 42 32.093 0.86 0.08 0.048 10.929 15.544 0.662 0.368 28.306 0.047 88.937 43 30.764 0.032 0.138 0.018 11.628 14.215 0.682 0.457 30.105 0.015 88.054 45 30.226 0.003 0.144 0.018 13.302 14.571 0.651 0.45 28.593 0.056 0.049 88.063 48 29.927 0.025 0.23 0.009 13.847 15.114 0.532 0.348 27.425 87.457 49 30.151 0.014 0.171 0.018 13.485 15.023 0.501 0.43 27.875 0.025 0.024 87.717 54 30.632 0.07 0.389 0.015 13.683 14.923 0.429 0.487 26.853 0.007 87.488 70 30.14 0.031 0.145 0.058 12.597 14.394 0.598 0.288 30.028 0.001 88.28 72 30.632 0.075 0.035 0.144 12.825 14.994 0.45 0.454 29.716 0.021 0.012 89.358 5 石英 98.789 0.037 0.061 0.138 0.121 0.577 0.028 0.033 0.44 100.224 8 99.054 0.137 0.024 0.04 0.001 0.658 0.019 0.058 0.068 100.059 10 98.93 0.074 0.048 0.076 0.025 0.571 0.02 0.011 0.181 0.002 99.938 28 98.645 0.188 0.023 0.071 0.029 0.803 0.01 0.044 0.348 100.161 29 98.374 0.042 0.09 0.009 0.714 0.01 0.103 0.102 0.128 0.012 99.584 51 98.634 0.136 0.058 0.138 0.009 0.749 0.008 0.059 0.109 0.046 0.039 99.985 53 99.027 0.003 0.001 0.007 0.01 0.013 0.031 0.02 0.034 99.146 58 99.417 0.028 0.019 0.005 0.023 0.006 0.125 0.025 99.648 67 98.585 0.085 0.015 0.096 0.352 0.028 0.031 0.015 0.045 99.252 71 99.796 0.007 0.013 0.029 0.005 0.022 0.006 0.007 0.027 0.047 0.008 99.967 7 方解石 2.067 0.405 0.644 0.176 0.605 1.033 1.289 47.545 1.18 0.03 54.974 25 0.057 0.022 0.039 0.022 0.105 53.871 0.492 0.008 54.616 27 0.06 0.027 0.042 0.004 0.109 53.79 0.441 0.001 54.474 34 0.017 0.011 0.163 0.143 54.128 0.552 55.014 39 0.056 0.011 0.163 0.014 0.176 50.362 0.625 51.407 44 0.06 0.015 0.005 0.111 0.006 0.164 54.08 1.005 0.037 55.483 52 0.068 0.005 0.068 0.018 0.955 54.038 0.172 0.021 0.05 55.395 57 0.622 0.018 0.045 0.002 0.26 0.08 1.451 52.228 0.451 55.157 63 4.242 0.035 0.012 0.01 1.414 0.201 0.572 48.864 1.118 0.062 0.018 56.548 4 沸石 60.83 7.585 0.034 0.084 0.119 19.712 0.002 0.172 0.58 0.011 89.129 6 60.674 10.162 0.026 0.028 20.377 0.205 91.472 9 62.423 8.772 0.045 0.055 0.004 19.111 0.006 0.232 0.16 90.808 11 60.543 8.485 0.022 0.003 0.016 19.13 0.056 0.183 88.438 15 55.393 12.474 0.016 0.01 0.017 21.925 0.003 0.073 0.013 89.924 18 61.957 7.973 0.029 0.05 0.054 18.774 0.009 0.172 0.413 0.022 0.007 89.46 21 58.749 5.846 0.05 1.413 0.753 20.822 0.056 0.667 1.594 0.309 90.259 36 60.719 9.445 0.018 0.049 19.801 0.017 0.107 0.139 0.028 90.323 37 57.103 11.794 0.009 0.017 21.753 0.024 0.125 0.021 0.005 90.851 59 58.065 10.85 0.023 0.008 21 0.014 0.163 0.002 90.125 68 59.588 9.734 0.01 0.056 0.075 20.065 0.142 0.254 0.173 0.05 90.147 69 58.883 10.254 0.042 0.032 20.875 0.06 0.03 0.224 0.021 90.421 74 58.608 10.42 0.047 0.047 20.652 0.029 0.068 0.245 90.116 
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表 2 北天山巴音沟安山岩主量元素地球化学分析结果（%）
Table 2 Major （%） elemental compositions of the andesite from the Bayingou in the North Tianshan belt
样品号 924-1 924-2 924-4 924-9 925-2 925-5 925-7 926-1 926-6 926-7 926-9 SiO2 62.80 62.84 63.68 65.94 62.69 62.29 61.08 58.18 58.22 60.34 57.15 TiO2 0.65 0.86 0.78 0.74 0.71 0.99 0.64 0.98 0.97 0.96 1.52 Al2O3 15.18 15.12 14.83 14.86 16.05 14.9 12.57 15.63 15.82 16.15 15.51 Fe2O3T 2.54 4.35 2.95 2.49 2.15 1.9 2.44 5.37 5.31 3.33 6.83 FeOT 2.29 3.92 2.66 2.24 1.94 1.71 2.20 4.83 4.78 3.00 6.15 FeO 2.46 1.65 2.48 2.6 3.25 2.89 2.3 2.82 2.96 2.82 2.77 MnO 0.10 0.11 0.1 0.1 0.1 0.11 0.14 0.15 0.15 0.13 0.22 MgO 1.72 1.82 1.91 1.83 2.32 1.92 1.92 2.84 2.83 2.28 2.79 CaO 3.05 2.85 3.47 2.67 2.53 3.94 6.48 3.65 3.53 4.64 3.78 Na2O 5.02 3.56 4.17 3.9 5.26 5.38 3.64 3.84 4.17 4.53 4.47 K2O 1.44 2.7 1.66 2.5 1.07 0.93 1.58 2.01 1.73 1.26 1.05 P2O5 0.15 0.17 0.15 0.14 0.11 0.21 0.12 0.17 0.18 0.21 0.28 LOI 4.35 3.28 3.57 2.26 3.35 3.61 6.21 4.25 3.67 3.13 2.70 Total 99.46 99.31 99.75 100.03 99.59 98.86 99.12 99.89 99.54 99.78 99.07 CaO/（FeOT+MgO） 0.73 0.51 0.73 0.62 0.53 0.98 1.47 0.47 0.46 0.84 0.44 Al2O3/（FeOT+MgO） 0.46 0.28 0.39 0.46 0.54 0.57 0.39 0.23 0.24 0.37 0.18 Mg# 57.53 45.56 56.53 59.52 68.34 66.90 61.15 51.45 51.60 57.80 44.97 Na2O+K2O 6.46 6.26 5.83 6.4 6.33 6.31 5.22 5.85 5.9 5.79 5.52 K2O/Na2O 0.29 0.76 0.40 0.64 0.20 0.17 0.43 0.52 0.41 0.28 0.23 FeOT/MgO 1.33 2.15 1.39 1.22 0.83 0.89 1.14 1.70 1.69 1.31 2.20 里特曼指数σ 2.11 1.98 1.64 1.79 2.03 2.06 1.51 2.25 2.29 1.93 2.15 注：LOI为烧失量；Fe2O3T为全铁含量。
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表 3 北天山巴音沟安山岩全岩微量元素地球化学分析结果（10−6）
Table 3 Whole-rock trace （×10−6 ） elemental compositions of the andesite from the Bayingou in the North Tianshan belt
样品号 924-1 924-2 924-4 924-9 925-2 925-5 925-7 926-1 926-6 926-7 926-9 La 15.5 17.3 17.6 15.4 13.7 9.84 14.7 11.2 11.2 7.92 8.63 Ce 37.4 38.10 39.10 34.80 31.90 24.70 34.00 27.30 27.80 19.50 21.60 Pr 4.97 4.90 5.06 4.56 4.35 3.66 4.47 3.81 3.83 2.86 3.27 Nd 21.5 21.4 21.4 19.2 18.9 17.8 19.1 17.9 18.3 13.9 16.40 Sm 5.52 5.29 5.32 4.84 5.02 5.46 4.82 5.03 5.04 4.06 5.14 Eu 1.46 1.48 1.38 1.23 1.43 1.64 1.29 1.37 1.55 1.61 1.62 Gd 5.48 5.42 5.15 4.50 4.85 6.06 4.88 5.14 5.21 4.49 5.26 Tb 0.89 0.86 0.82 0.75 0.78 0.99 0.78 0.85 0.84 0.74 0.86 Dy 5.73 5.33 5.1 4.58 5.03 6.36 4.92 5.15 5.4 4.64 5.42 Ho 1.21 1.13 1.1 0.99 1.11 1.35 1 1.08 1.1 0.97 1.11 Er 3.42 3.24 3.18 2.71 3.09 3.85 2.96 2.93 3.23 2.72 3.08 Tm 0.52 0.47 0.45 0.41 0.48 0.55 0.42 0.44 0.47 0.38 0.47 Yb 3.59 3.36 3.2 2.86 3.35 3.82 2.99 3.03 3.26 2.53 3.14 Lu 0.54 0.5 0.51 0.42 0.53 0.58 0.42 0.44 0.48 0.39 0.44 Sr 198 222 199 180 199 366 416 280 302 424 400 Rb 23.4 52.7 28.5 44.2 28.2 16 38.1 51 30.8 15.1 15.5 Ba 302 722 285 650 451 1177 635 387 804 1022 1000 Th 3.65 2.94 3.36 3.03 3.05 1.07 2.73 2.16 1.92 0.75 0.92 Nb 4.7 3.72 4.26 4.28 3.46 1.84 3.21 3.01 2.66 1.51 2.09 Zr 180 129 140 138 139 92.9 115 124 108 67.3 72.6 Hf 5.65 4.44 4.55 4.53 4.76 3.36 3.67 4.07 3.79 2.4 2.54 Zr/Hf 31.85 29.05 30.76 30.46 29.20 27.65 31.33 30.47 28.50 28.04 28.58 Y 30.1 28.4 28.2 23.9 27.8 32.8 26.8 27.3 27.4 24 26.8 V 75.5 109 102 95.4 80.9 68.1 75.2 141 137 120 181 Cr 83.5 67.5 75.2 43.9 36.4 48.3 70.3 31.9 31.7 27.5 50.1 Ni 14.3 13.5 11.3 9.54 9.65 15.3 8.56 12.6 11 15.2 17.1 U 1.32 1.01 1.21 0.9 1.02 0.64 0.82 0.78 0.73 0.46 0.51 Pb 11.7 8.16 8.58 8.53 10 6.84 8.28 6.58 7.18 4.6 3.93 Sr/Y 6.58 7.82 7.06 7.53 7.16 11.16 15.52 10.26 11.02 17.67 14.93 La/Yb 4.32 5.15 5.50 5.38 4.09 2.58 4.92 3.70 3.44 3.13 2.75 La/Nb 3.30 4.65 4.13 3.60 3.96 5.35 4.58 3.72 4.21 5.25 4.13 （La/Yb）N 2.91 3.47 3.71 3.63 2.76 1.74 3.31 2.49 2.32 2.11 1.85 Th/Yb 1.02 0.88 1.05 1.06 0.91 0.28 0.91 0.71 0.59 0.30 0.29 Nb/Yb 1.31 1.11 1.33 1.50 1.03 0.48 1.07 0.99 0.82 0.60 0.67 ∑REE 107.7 108.8 109.4 97.3 94.5 86.7 96.8 85.7 87.7 66.7 76.4 Eu/Eu* 0.81 0.85 0.81 0.81 0.89 0.87 0.81 0.82 0.92 1.15 0.95 Ce/Ce* 1.03 1.00 1.00 1.01 1.00 1.00 1.02 1.01 1.03 0.99 0.98
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表 4 北天山巴音沟安山岩锆石LA-ICP-MS测年结果
Table 4 LA-ICP-MS U-Pb dating results of zircons from the andesite from the Bayingou Formation in the North Tianshan belt
测点号 含量（×10−6） 同位素比值 年龄（Ma） Pb U 206Pb/238U 1σ err% 207Pb/235U 1σ err% 207Pb/206Pb 1σ err% 208Pb/232Th 1σ err% 232Th/238U 1σ err% 206Pb/238U 1σ 207Pb/235U 1σ 207Pb/206Pb 1σ 1 2.46 48.65 0.0509 0.0005 1.01 0.4910 0.0484 9.86 0.0699 0.0072 10.35 0.0102 0.0006 5.89 0.3900 0.0010 0.26 320.2 3.2 405.6 40.0 926.1 212.5 2 5.89 114.73 0.0520 0.0004 0.71 0.3818 0.0171 4.48 0.0532 0.0024 4.49 0.0115 0.0004 3.11 0.3851 0.0018 0.46 326.8 2.3 328.4 14.7 339.3 101.7 3 3.43 68.20 0.0510 0.0004 0.87 0.4336 0.0380 8.77 0.0617 0.0059 9.49 0.0123 0.0008 6.15 0.3211 0.0009 0.28 320.5 2.8 365.7 32.1 663.4 203.4 4 3.96 76.61 0.0511 0.0004 0.82 0.4148 0.0265 6.40 0.0588 0.0037 6.36 0.0102 0.0003 2.69 0.5403 0.0020 0.37 321.5 2.6 352.4 22.5 560.7 138.6 5 3.38 66.77 0.0520 0.0005 0.90 0.3837 0.0330 8.61 0.0535 0.0047 8.77 0.0102 0.0005 5.03 0.3676 0.0008 0.20 326.6 2.9 329.8 28.4 352.2 198.1 6 2.69 51.63 0.0511 0.0005 0.96 0.3895 0.0542 13.92 0.0553 0.0081 14.58 0.0160 0.0009 5.36 0.3836 0.0017 0.45 321.2 3.1 334.0 46.5 424.5 325.3 7 3.90 76.00 0.0516 0.0004 0.75 0.3816 0.0332 8.70 0.0537 0.0048 8.92 0.0142 0.0006 3.97 0.3441 0.0011 0.33 324.1 2.4 328.3 28.5 358.1 201.4 8 5.83 111.22 0.0520 0.0003 0.65 0.3888 0.0241 6.20 0.0542 0.0034 6.19 0.0140 0.0004 3.07 0.4061 0.0015 0.38 326.8 2.1 333.5 20.7 380.1 139.2 9 3.34 62.51 0.0524 0.0005 0.86 0.3803 0.0491 12.91 0.0527 0.0070 13.38 0.0153 0.0007 4.32 0.4272 0.0011 0.25 329.0 2.8 327.3 42.3 315.1 304.3 10 11.55 223.71 0.0510 0.0003 0.58 0.3702 0.0110 2.98 0.0526 0.0016 2.96 0.0115 0.0003 2.42 0.5087 0.0010 0.21 320.8 1.9 319.8 9.5 312.6 67.3 11 5.42 103.17 0.0518 0.0004 0.68 0.3794 0.0229 6.03 0.0531 0.0032 6.02 0.0120 0.0003 2.76 0.4993 0.0059 1.19 325.7 2.2 326.6 19.7 332.7 136.4 12 2.91 57.39 0.0509 0.0004 0.86 0.3815 0.0352 9.22 0.0543 0.0051 9.35 0.0110 0.0005 4.22 0.4392 0.0009 0.21 320.2 2.8 328.1 30.3 384.4 210.1 13 2.68 51.16 0.0508 0.0004 0.85 0.4204 0.0443 10.54 0.0600 0.0065 10.81 0.0172 0.0006 3.71 0.3792 0.0006 0.16 319.7 2.7 356.3 37.6 602.7 233.9 14 4.39 86.08 0.0513 0.0004 0.75 0.4469 0.0252 5.64 0.0632 0.0035 5.50 0.0119 0.0004 3.72 0.3669 0.0040 1.10 322.2 2.4 375.1 21.2 716.3 116.8 15 3.76 72.06 0.0520 0.0004 0.84 0.3779 0.0492 13.02 0.0527 0.0072 13.61 0.0125 0.0006 5.08 0.4344 0.0026 0.60 326.9 2.8 325.5 42.4 315.4 309.5 16 3.53 67.76 0.0524 0.0004 0.80 0.3759 0.0327 8.70 0.0521 0.0047 8.97 0.0124 0.0006 4.48 0.4036 0.0014 0.34 329.0 2.6 324.0 28.2 288.0 205.0 17 7.24 143.78 0.0514 0.0003 0.60 0.3859 0.0132 3.41 0.0544 0.0018 3.37 0.0129 0.0004 3.20 0.3014 0.0010 0.32 323.4 1.9 331.4 11.3 387.9 75.7 18 3.41 66.79 0.0509 0.0004 0.81 0.4694 0.0326 6.95 0.0669 0.0046 6.89 0.0140 0.0006 4.29 0.3302 0.0010 0.29 320.0 2.6 390.8 27.2 834.1 143.5 19 3.09 62.22 0.0519 0.0004 0.81 0.3807 0.0514 13.49 0.0533 0.0075 14.10 0.0440 0.0022 4.91 0.0628 0.0003 0.56 325.9 2.6 327.6 44.2 339.6 319.3 20 7.71 150.00 0.0513 0.0003 0.62 0.3793 0.0136 3.59 0.0537 0.0019 3.51 0.0155 0.0004 2.59 0.3429 0.0019 0.54 322.2 2.0 326.5 11.7 357.3 79.2 21 9.60 185.82 0.0518 0.0003 0.60 0.3872 0.0123 3.17 0.0542 0.0017 3.11 0.0170 0.0004 2.61 0.2968 0.0010 0.33 325.6 1.9 332.3 10.5 379.8 69.9 22 5.06 99.43 0.0508 0.0003 0.68 0.3780 0.0275 7.27 0.0539 0.0039 7.26 0.0180 0.0006 3.31 0.2832 0.0021 0.75 319.7 2.2 325.5 23.7 367.6 163.6 23 3.38 67.54 0.0517 0.0004 0.76 0.4205 0.0279 6.63 0.0590 0.0039 6.57 0.0090 0.0004 4.13 0.3271 0.0007 0.21 325.1 2.5 356.4 23.6 565.5 143.1 24 4.69 88.59 0.0519 0.0004 0.73 0.3863 0.0346 8.96 0.0540 0.0049 9.03 0.0210 0.0008 3.65 0.3040 0.0007 0.23 326.3 2.4 331.7 29.7 369.4 203.4 25 8.48 164.62 0.0515 0.0003 0.60 0.3781 0.0132 3.49 0.0533 0.0018 3.43 0.0160 0.0004 2.69 0.3283 0.0010 0.31 323.4 1.9 325.6 11.4 341.1 77.6 26 3.25 60.72 0.0525 0.0005 0.87 0.3877 0.0443 11.44 0.0536 0.0063 11.70 0.0150 0.0006 3.69 0.4349 0.0014 0.32 329.7 2.9 332.7 38.0 353.5 264.3 27 2.78 53.94 0.0523 0.0007 1.27 0.3883 0.0692 17.83 0.0539 0.0318 59.02 0.0130 0.0014 10.51 0.3458 0.0015 0.42 328.5 4.2 333.1 59.4 365.3 1330.4 28 2.68 52.49 0.0512 0.0005 0.89 0.3960 0.0377 9.52 0.0561 0.0056 9.92 0.0130 0.0005 4.09 0.3775 0.0027 0.73 321.6 2.9 338.7 32.2 457.8 219.9 29 9.74 176.04 0.0519 0.0003 0.57 0.3961 0.0104 2.64 0.0553 0.0014 2.60 0.0130 0.0003 2.08 0.6929 0.0019 0.28 326.4 1.9 338.8 8.9 424.6 57.9 30 2.99 56.37 0.0509 0.0004 0.83 0.4416 0.0487 11.04 0.0629 0.0072 11.44 0.0200 0.0009 4.52 0.3515 0.0016 0.45 320.3 2.6 371.4 41.0 704.0 243.4 31 19.42 353.67 0.0516 0.0003 0.57 0.3778 0.0061 1.62 0.0531 0.0008 1.57 0.0150 0.0003 1.85 0.5965 0.0011 0.18 324.6 1.9 325.4 5.3 331.4 35.7 32 2.91 54.48 0.0525 0.0004 0.78 0.3802 0.0369 9.70 0.0526 0.0053 10.11 0.0143 0.0005 3.39 0.4416 0.0007 0.16 329.6 2.6 327.2 31.7 310.1 230.2 33 3.05 57.83 0.0512 0.0005 0.91 0.3748 0.0401 10.71 0.0531 0.0060 11.25 0.0155 0.0006 3.99 0.4440 0.0008 0.18 321.8 2.9 323.2 34.6 333.5 255.1 注：表中所列误差均为1σ误差。
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