胶东三山岛金矿床巨斑花岗岩的形成时代、成因及对金成矿的启示
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周晓萍,宋明春,刘向东,闫春明,胡兆君,苏海岗,胡秉谦,周宜康
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Formation Age,Petrogenesis,and Implications for Gold Mineralization of Giant Porphyritic Granite in the Sanshandao Gold Deposit in Jiaodong
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Xiaoping ZHOU,Mingchun SONG,Xiangdong LIU,Chunming YAN,Zhaojun HU,Haigang SU,Bingqian HU,Yikang ZHOU
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表3 三山岛巨斑花岗岩LA-ICP-MS锆石 U-Pb年龄分析结果
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Table 3 Analysis results of LA-ICP-MS zircon U-Pb age in Sanshandao giant porphyritic granite
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测试点编号 | 元素含量 /(×10-6) | Th/U | 同位素比值 | 年龄/Ma |
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Th | U | 207Pb/206Pb | 207Pb/235U | 206Pb/238U | 207Pb/206Pb | 206Pb/238U | 207Pb/235U | 谐和度 /% |
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测值 | 1σ | 测值 | 1σ | 测值 | 1σ | 测值 | 2σ | 测值 | 2σ | 测值 | 2σ |
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1 | 183 | 564 | 0.3 | 0.0491 | 0.0221 | 0.1342 | 0.0222 | 0.0198 | 0.0062 | 107 | 110 | 126 | 2 | 128 | 5 | 99 | 2 | 279 | 774 | 0.4 | 0.0489 | 0.0204 | 0.1358 | 0.0193 | 0.0201 | 0.0080 | 134 | 91 | 128 | 2 | 129 | 5 | 99 | 3 | 86 | 285 | 0.3 | 0.0509 | 0.0853 | 0.1352 | 0.0550 | 0.0199 | 0.0109 | -53 | 163 | 127 | 3 | 128 | 12 | 99 | 4 | 102 | 355 | 0.3 | 0.0460 | 0.0305 | 0.1271 | 0.0299 | 0.0200 | 0.0084 | -44 | 145 | 128 | 2 | 121 | 7 | 95 | 5 | 106 | 367 | 0.3 | 0.0465 | 0.0304 | 0.1271 | 0.0286 | 0.0198 | 0.0075 | -59 | 156 | 127 | 2 | 121 | 7 | 96 | 6 | 14 | 81 | 0.2 | 0.0494 | 0.0672 | 0.1592 | 0.0627 | 0.0237 | 0.0137 | -141 | 318 | 151 | 4 | 148 | 17 | 98 | 7 | 44 | 170 | 0.3 | 0.0471 | 0.0522 | 0.1260 | 0.0479 | 0.0195 | 0.0130 | -180 | 264 | 125 | 3 | 120 | 11 | 96 | 8 | 9 | 145 | 0.1 | 0.0525 | 0.0367 | 0.1742 | 0.0374 | 0.0240 | 0.0097 | 194 | 178 | 153 | 3 | 162 | 11 | 94 | 9 | 184 | 491 | 0.4 | 0.0502 | 0.0268 | 0.1357 | 0.0271 | 0.0195 | 0.0073 | 143 | 135 | 125 | 2 | 129 | 7 | 97 | 10 | 98 | 316 | 0.3 | 0.0521 | 0.0315 | 0.1431 | 0.0302 | 0.0199 | 0.0094 | 217 | 141 | 127 | 2 | 135 | 8 | 94 | 11 | 146 | 424 | 0.3 | 0.0492 | 0.0260 | 0.1343 | 0.0254 | 0.0198 | 0.0070 | 95 | 136 | 126 | 2 | 128 | 6 | 99 | 12 | 54 | 200 | 0.3 | 0.0490 | 0.0419 | 0.1357 | 0.0417 | 0.0202 | 0.0096 | -7 | 214 | 129 | 2 | 129 | 10 | 100 | 13 | 87 | 31 | 2.8 | 0.1362 | 0.0125 | 6.9611 | 0.0094 | 0.3686 | 0.0091 | 2 181 | 40 | 2 022 | 32 | 2 105 | 17 | 96 | 14 | 30 | 176 | 0.2 | 0.0482 | 0.0404 | 0.1584 | 0.0410 | 0.0235 | 0.0186 | 9 | 214 | 150 | 5 | 149 | 11 | 99 | 15 | 75 | 280 | 0.3 | 0.1792 | 0.0082 | 11.1776 | 0.0105 | 0.4534 | 0.0054 | 2 642 | 28 | 2 410 | 22 | 2 536 | 20 | 95 | 16 | 39 | 186 | 0.2 | 0.0506 | 0.0313 | 0.1395 | 0.0315 | 0.0200 | 0.0100 | 220 | 125 | 128 | 3 | 132 | 8 | 96 | 17 | 132 | 435 | 0.3 | 0.0482 | 0.0207 | 0.1294 | 0.0181 | 0.0195 | 0.0087 | 70 | 105 | 125 | 2 | 123 | 4 | 99 | 18 | 273 | 586 | 0.5 | 0.0468 | 0.0246 | 0.1282 | 0.0240 | 0.0198 | 0.0059 | -8 | 114 | 127 | 1 | 122 | 6 | 97 | 19 | 444 | 721 | 0.6 | 0.0497 | 0.0230 | 0.1399 | 0.0205 | 0.0205 | 0.0082 | 190 | 109 | 131 | 2 | 133 | 5 | 98 | 20 | 484 | 1 140 | 0.4 | 0.0482 | 0.0190 | 0.1327 | 0.0181 | 0.0200 | 0.0045 | 76 | 92 | 128 | 1 | 126 | 4 | 99 | 21 | 447 | 920 | 0.5 | 0.0474 | 0.0194 | 0.1326 | 0.0185 | 0.0203 | 0.0061 | 54 | 101 | 129 | 2 | 126 | 4 | 98 | 22 | 124 | 358 | 0.3 | 0.0484 | 0.0306 | 0.1327 | 0.0315 | 0.0198 | 0.0078 | 38 | 148 | 126 | 2 | 126 | 7 | 100 | 23 | 101 | 320 | 0.3 | 0.0499 | 0.0304 | 0.1376 | 0.0299 | 0.0199 | 0.0087 | 137 | 154 | 127 | 2 | 131 | 7 | 97 | 24 | 98 | 282 | 0.3 | 0.0494 | 0.0310 | 0.1364 | 0.0311 | 0.0200 | 0.0087 | 81 | 161 | 128 | 2 | 129 | 8 | 99 | 25 | 96 | 381 | 0.3 | 0.0479 | 0.0273 | 0.1298 | 0.0261 | 0.0196 | 0.0089 | 59 | 140 | 125 | 2 | 124 | 6 | 99 | 26 | 149 | 466 | 0.3 | 0.0489 | 0.0335 | 0.1377 | 0.0274 | 0.0204 | 0.0176 | 122 | 134 | 130 | 5 | 131 | 7 | 100 | 27 | 149 | 459 | 0.3 | 0.0456 | 0.0248 | 0.1244 | 0.0247 | 0.0197 | 0.0066 | -79 | 126 | 126 | 2 | 119 | 6 | 94 | 29 | 233 | 235 | 1.0 | 0.1638 | 0.0051 | 9.7485 | 0.0047 | 0.4301 | 0.0031 | 2 494 | 17 | 2 306 | 12 | 2 411 | 9 | 96 |
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