临沧地区富铀花岗岩体地球化学特征及其地质意义
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田建民, 徐争启, 尹明辉, 李涛, 孙康
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Geochemical characteristics and geological significance of uranium-rich granites in Lincang area
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TIAN Jian-Min, XU Zheng-Qi, YIN Ming-Hui, LI Tao, SUN Kang
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表1 临沧富铀花岗岩体锆石LA-ICP-MS U-Pb定年结果
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Table 1 Zircon LA-ICP-MS U-Pb dating results of Lincang rich uranium granite
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编号 | 含量/10-6 | w(Th)/ w(U) | 207Pb/206Pb | 207Pb/235U | 206Pb/238U | 208Pb/232Th | 238U/232Th | 年龄(Ma)±1σ | Pb | Th | U | 207Pb/206Pb | 207Pb/235U | 206Pb/238U | YN057-01 | 49.9 | 444.3 | 1427.1 | 0.31 | 0.052 | 0.265 | 0.036 | 0.010 | 2.606 | 305.6±64.8 | 238.5±6.3 | 228.7±2.5 | YN057-03 | 34.2 | 322.2 | 877.4 | 0.37 | 0.050 | 0.262 | 0.038 | 0.012 | 2.279 | 198.2±78.7 | 236.3±7.6 | 237.9±3.0 | YN057-04 | 47.5 | 506.3 | 1136 | 0.45 | 0.053 | 0.266 | 0.036 | 0.013 | 1.863 | 322.3±77.8 | 239.9±7.0 | 230.8±2.4 | YN057-05 | 55.3 | 483.3 | 1532.9 | 0.32 | 0.050 | 0.246 | 0.035 | 0.012 | 2.623 | 194.5±66.7 | 223.7±5.6 | 224.5±2.1 | YN057-07 | 31.1 | 306.2 | 802.9 | 0.38 | 0.051 | 0.255 | 0.036 | 0.012 | 2.160 | 235.3±90.7 | 230.6±7.7 | 229.5±2.6 | YN057-08 | 31.4 | 375.5 | 807.4 | 0.47 | 0.051 | 0.246 | 0.035 | 0.011 | 1.779 | 239±72.2 | 223.4±8.6 | 220.9±2.7 | YN057-09 | 19.4 | 179.4 | 465.2 | 0.39 | 0.058 | 0.290 | 0.036 | 0.014 | 2.145 | 527.8±102.8 | 258.4±9.8 | 230±3.1 | YN057-10 | 33.4 | 492.7 | 768.1 | 0.64 | 0.050 | 0.236 | 0.034 | 0.012 | 1.291 | 190.8±92.6 | 215±7.4 | 216.2±2.3 | YN057-11 | 35.5 | 448.1 | 893.9 | 0.5 | 0.050 | 0.237 | 0.035 | 0.011 | 1.652 | 189±77.8 | 215.8±6.1 | 218.7±2.4 | YN057-12 | 47.3 | 507.9 | 1266.8 | 0.4 | 0.050 | 0.245 | 0.035 | 0.011 | 2.081 | 213±41.7 | 222.8±6.1 | 222.9±2.2 | YN057-13 | 15.9 | 212.7 | 368.4 | 0.58 | 0.053 | 0.270 | 0.037 | 0.011 | 1.435 | 320.4±110.2 | 242.7±9.7 | 234.9±3.3 | YN057-14 | 16.3 | 160.8 | 436.9 | 0.37 | 0.052 | 0.248 | 0.035 | 0.012 | 2.273 | 333.4±98.1 | 224.6±8.5 | 219.6±2.7 | YN057-15 | 57.4 | 817.9 | 1280.4 | 0.64 | 0.053 | 0.266 | 0.036 | 0.012 | 1.317 | 309.3±68.5 | 239.6±6.7 | 230.4±2.3 | YN057-16 | 40 | 351.5 | 1108 | 0.32 | 0.053 | 0.262 | 0.035 | 0.012 | 2.652 | 344.5±66.7 | 236.1±6.3 | 224.8±2.4 | YN057-17 | 31.3 | 236.2 | 879.2 | 0.27 | 0.055 | 0.280 | 0.037 | 0.013 | 3.006 | 420.4±78.7 | 250.4±8.0 | 232.5±2.6 | YN057-18 | 24.8 | 254 | 681.9 | 0.37 | 0.049 | 0.235 | 0.035 | 0.012 | 2.247 | 200.1±95.4 | 214.5±7.4 | 220.5±2.6 | YN057-19 | 32.9 | 479.3 | 789.7 | 0.61 | 0.052 | 0.246 | 0.034 | 0.012 | 1.378 | 298.2±81.5 | 223.3±7.0 | 215.7±2.6 | YN057-20 | 36.9 | 401 | 1031.8 | 0.39 | 0.052 | 0.247 | 0.034 | 0.011 | 2.158 | 272.3±70.4 | 223.8±6.1 | 218.3±2.3 | YN057-21 | 34.6 | 344.9 | 957.2 | 0.36 | 0.051 | 0.250 | 0.035 | 0.012 | 2.358 | 261.2±90.7 | 226.8±7.2 | 222.9±2.7 | YN057-22 | 24.9 | 269.8 | 652.5 | 0.41 | 0.050 | 0.246 | 0.036 | 0.012 | 2.014 | 211.2±88.9 | 223.6±7.3 | 226.8±2.9 | YN057-23 | 21.8 | 230.9 | 570.9 | 0.4 | 0.051 | 0.246 | 0.035 | 0.012 | 2.056 | 220.4±100 | 223±8.5 | 223.9±3.0 | YN057-24 | 33.9 | 337.2 | 890.8 | 0.38 | 0.053 | 0.260 | 0.036 | 0.013 | 2.199 | 324.1±72.2 | 235±6.3 | 226.6±2.8 | YN057-25 | 36.4 | 415.7 | 954.1 | 0.44 | 0.053 | 0.260 | 0.036 | 0.011 | 1.909 | 320.4±68.5 | 235±6.0 | 226.1±2.5 | YN057-26 | 56.4 | 392.1 | 1686.9 | 0.23 | 0.055 | 0.265 | 0.035 | 0.013 | 3.575 | 413±68.5 | 238.7±6.1 | 221.7±3.1 |
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