Geoscience ›› 2017, Vol. 31 ›› Issue (01): 1-10.
• Mineral Deposit and Petrology • Previous Articles Next Articles
SHI Zhiqiang1,2(), SHI Yuruo2(
)
Received:
2016-06-06
Revised:
2016-10-23
Online:
2017-02-10
Published:
2017-03-16
CLC Number:
SHI Zhiqiang, SHI Yuruo. Formation and Metamorphic Ages of the Banded Iron Formation in Fangmayu of Miyun, Beijing: Zircon SHRIMP U-Pb Dating[J]. Geoscience, 2017, 31(01): 1-10.
分析 点号 | 206Pbc /% | U /10-6 | Th /10-6 | 232Th /238U | 206Pb* /10-6 | 207Pb* /206Pb* | ±% | 207Pb* /235U | ±% | 206Pb* /238U | ±% | 误差 | 207Pb/206Pb 年龄 | ±1σ |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1.1 | 0.02 | 639 | 169 | 0.27 | 251.0 | 0.161 3 | 0.34 | 10.153 | 0.93 | 0.456 3 | 0.86 | 0.932 | 2 468 | ± 6 |
2.1 | - | 342 | 59 | 0.18 | 148.0 | 0.171 2 | 0.59 | 11.850 | 1.10 | 0.502 3 | 0.94 | 0.848 | 2 570 | ±10 |
3.1 | 0.01 | 635 | 178 | 0.29 | 252.0 | 0.159 5 | 0.35 | 10.172 | 0.96 | 0.462 2 | 0.89 | 0.930 | 2 450 | ± 6 |
4.1 | 0.02 | 319 | 36 | 0.12 | 130.0 | 0.167 5 | 0.44 | 10.930 | 1.20 | 0.474 3 | 1.10 | 0.928 | 2 531 | ± 8 |
5.1 | 0.03 | 739 | 60 | 0.08 | 154.0 | 0.123 9 | 0.56 | 4.083 | 1.00 | 0.241 5 | 0.88 | 0.842 | 2 010 | ±10 |
6.1 | 0.19 | 147 | 54 | 0.38 | 60.8 | 0.164 4 | 0.75 | 10.810 | 1.30 | 0.479 8 | 1.10 | 0.824 | 2 484 | ±14 |
7.1 | 0.12 | 237 | 54 | 0.23 | 77.5 | 0.149 6 | 0.58 | 7.731 | 1.20 | 0.379 1 | 1.00 | 0.864 | 2 329 | ±11 |
8.1 | 0.00 | 798 | 258 | 0.33 | 318.0 | 0.163 9 | 0.32 | 10.515 | 0.94 | 0.464 0 | 0.89 | 0.940 | 2 496 | ± 6 |
9.1 | 0.01 | 387 | 18 | 0.05 | 108.0 | 0.111 1 | 0.57 | 4.953 | 1.10 | 0.323 6 | 0.94 | 0.856 | 1 816 | ±10 |
10.1 | 0.03 | 277 | 73 | 0.27 | 114.0 | 0.166 2 | 0.46 | 10.980 | 1.10 | 0.478 9 | 0.97 | 0.904 | 2 518 | ± 8 |
11.1 | 0.01 | 662 | 180 | 0.28 | 178.0 | 0.137 4 | 0.41 | 6.013 | 0.97 | 0.314 2 | 0.88 | 0.909 | 2 193 | ± 7 |
12.1 | 0.00 | 176 | 73 | 0.43 | 70.2 | 0.167 2 | 2.20 | 10.710 | 2.50 | 0.464 0 | 1.20 | 0.484 | 2 529 | ±37 |
13.1 | 0.52 | 105 | 29 | 0.28 | 42.5 | 0.165 4 | 0.74 | 10.560 | 1.40 | 0.468 0 | 1.20 | 0.851 | 2 463 | ±17 |
14.1 | 0.00 | 539 | 178 | 0.34 | 210.0 | 0.160 2 | 0.38 | 10.072 | 0.98 | 0.453 6 | 0.91 | 0.925 | 2 458 | ± 6 |
15.1 | 0.01 | 702 | 189 | 0.28 | 238.0 | 0.148 5 | 0.37 | 8.106 | 0.97 | 0.395 1 | 0.90 | 0.924 | 2 327 | ± 6 |
16.1 | 0.09 | 377 | 83 | 0.23 | 120.0 | 0.139 9 | 0.48 | 7.167 | 1.10 | 0.371 8 | 0.95 | 0.894 | 2 216 | ±10 |
17.1 | 0.03 | 116 | 51 | 0.45 | 46.3 | 0.160 3 | 0.73 | 10.380 | 1.40 | 0.466 0 | 1.20 | 0.857 | 2 456 | ±12 |
18.1 | 0.02 | 958 | 318 | 0.34 | 241.0 | 0.134 5 | 0.38 | 5.428 | 0.95 | 0.292 7 | 0.87 | 0.918 | 2 155 | ± 7 |
19.1 | - | 316 | 104 | 0.34 | 133.0 | 0.166 9 | 0.45 | 11.280 | 1.10 | 0.490 7 | 0.97 | 0.908 | 2 527 | ± 8 |
20.1 | 0.09 | 270 | 324 | 1.24 | 110.0 | 0.168 1 | 0.48 | 10.900 | 1.10 | 0.475 3 | 1.00 | 0.901 | 2 531 | ± 9 |
21.1 | 0.06 | 704 | 135 | 0.20 | 154.0 | 0.133 2 | 0.45 | 4.612 | 10.00 | 0.253 9 | 0.89 | 0.891 | 2 133 | ± 8 |
22.1 | 0.03 | 457 | 171 | 0.39 | 157.0 | 0.152 0 | 0.43 | 8.237 | 1.00 | 0.397 7 | 0.93 | 0.907 | 2 366 | ± 7 |
23.1 | 0.06 | 670 | 178 | 0.28 | 216.0 | 0.152 4 | 0.39 | 7.859 | 0.99 | 0.375 1 | 0.91 | 0.919 | 2 367 | ± 7 |
24.1 | 0.02 | 264 | 30 | 0.12 | 77.0 | 0.118 6 | 0.64 | 5.505 | 1.20 | 0.338 8 | 1.00 | 0.841 | 1 933 | ±12 |
25.1 | 0.01 | 598 | 272 | 0.47 | 212.0 | 0.1572 | 0.37 | 8.829 | 0.98 | 0.4122 | 0.91 | 0.923 | 2 425 | ± 6 |
26.1 | - | 46 | 41 | 0.91 | 18.9 | 0.169 0 | 1.10 | 11.000 | 1.90 | 0.476 6 | 1.60 | 0.828 | 2 559 | ±19 |
27.1 | 0.03 | 387 | 141 | 0.38 | 161.0 | 0.168 5 | 0.42 | 11.260 | 1.10 | 0.483 5 | 0.97 | 0.918 | 2 540 | ± 7 |
28.1 | 0.01 | 2 080 | 183 | 0.09 | 568.0 | 0.145 4 | 0.29 | 6.390 | 0.91 | 0.318 0 | 0.86 | 0.949 | 2 292 | ± 5 |
29.1 | 0.01 | 603 | 107 | 0.18 | 212.0 | 0.159 3 | 0.38 | 9.012 | 0.98 | 0.410 4 | 0.91 | 0.923 | 2 447 | ± 6 |
30.1 | 0.05 | 217 | 227 | 1.08 | 88.3 | 0.166 4 | 0.53 | 10.920 | 1.20 | 0.474 1 | 1.00 | 0.891 | 2 517 | ± 9 |
31.1 | 0.05 | 381 | 78 | 0.21 | 101.0 | 0.111 9 | 0.58 | 4.712 | 1.10 | 0.309 4 | 0.94 | 0.848 | 1 823 | ±12 |
32.1 | 0.09 | 325 | 101 | 0.32 | 104.0 | 0.152 1 | 0.69 | 7.863 | 1.20 | 0.371 8 | 0.95 | 0.810 | 2 360 | ±12 |
33.1 | 0.01 | 520 | 195 | 0.39 | 214.0 | 0.156 5 | 0.38 | 10.510 | 0.98 | 0.479 9 | 0.90 | 0.925 | 2 418 | ± 6 |
34.1 | 0.07 | 387 | 53 | 0.14 | 108.0 | 0.111 4 | 0.62 | 4.930 | 1.10 | 0.323 3 | 0.93 | 0.828 | 1 811 | ±12 |
35.1 | 0.35 | 396 | 53 | 0.14 | 128.0 | 0.154 4 | 0.49 | 7.866 | 1.10 | 0.3753 | 0.97 | 0.891 | 2361 | ±10 |
Table 1 SHRIMP U-Pb zircon analytical results of magnetite-garnet-plagioclase gneiss in the Fangmayu iron deposit
分析 点号 | 206Pbc /% | U /10-6 | Th /10-6 | 232Th /238U | 206Pb* /10-6 | 207Pb* /206Pb* | ±% | 207Pb* /235U | ±% | 206Pb* /238U | ±% | 误差 | 207Pb/206Pb 年龄 | ±1σ |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1.1 | 0.02 | 639 | 169 | 0.27 | 251.0 | 0.161 3 | 0.34 | 10.153 | 0.93 | 0.456 3 | 0.86 | 0.932 | 2 468 | ± 6 |
2.1 | - | 342 | 59 | 0.18 | 148.0 | 0.171 2 | 0.59 | 11.850 | 1.10 | 0.502 3 | 0.94 | 0.848 | 2 570 | ±10 |
3.1 | 0.01 | 635 | 178 | 0.29 | 252.0 | 0.159 5 | 0.35 | 10.172 | 0.96 | 0.462 2 | 0.89 | 0.930 | 2 450 | ± 6 |
4.1 | 0.02 | 319 | 36 | 0.12 | 130.0 | 0.167 5 | 0.44 | 10.930 | 1.20 | 0.474 3 | 1.10 | 0.928 | 2 531 | ± 8 |
5.1 | 0.03 | 739 | 60 | 0.08 | 154.0 | 0.123 9 | 0.56 | 4.083 | 1.00 | 0.241 5 | 0.88 | 0.842 | 2 010 | ±10 |
6.1 | 0.19 | 147 | 54 | 0.38 | 60.8 | 0.164 4 | 0.75 | 10.810 | 1.30 | 0.479 8 | 1.10 | 0.824 | 2 484 | ±14 |
7.1 | 0.12 | 237 | 54 | 0.23 | 77.5 | 0.149 6 | 0.58 | 7.731 | 1.20 | 0.379 1 | 1.00 | 0.864 | 2 329 | ±11 |
8.1 | 0.00 | 798 | 258 | 0.33 | 318.0 | 0.163 9 | 0.32 | 10.515 | 0.94 | 0.464 0 | 0.89 | 0.940 | 2 496 | ± 6 |
9.1 | 0.01 | 387 | 18 | 0.05 | 108.0 | 0.111 1 | 0.57 | 4.953 | 1.10 | 0.323 6 | 0.94 | 0.856 | 1 816 | ±10 |
10.1 | 0.03 | 277 | 73 | 0.27 | 114.0 | 0.166 2 | 0.46 | 10.980 | 1.10 | 0.478 9 | 0.97 | 0.904 | 2 518 | ± 8 |
11.1 | 0.01 | 662 | 180 | 0.28 | 178.0 | 0.137 4 | 0.41 | 6.013 | 0.97 | 0.314 2 | 0.88 | 0.909 | 2 193 | ± 7 |
12.1 | 0.00 | 176 | 73 | 0.43 | 70.2 | 0.167 2 | 2.20 | 10.710 | 2.50 | 0.464 0 | 1.20 | 0.484 | 2 529 | ±37 |
13.1 | 0.52 | 105 | 29 | 0.28 | 42.5 | 0.165 4 | 0.74 | 10.560 | 1.40 | 0.468 0 | 1.20 | 0.851 | 2 463 | ±17 |
14.1 | 0.00 | 539 | 178 | 0.34 | 210.0 | 0.160 2 | 0.38 | 10.072 | 0.98 | 0.453 6 | 0.91 | 0.925 | 2 458 | ± 6 |
15.1 | 0.01 | 702 | 189 | 0.28 | 238.0 | 0.148 5 | 0.37 | 8.106 | 0.97 | 0.395 1 | 0.90 | 0.924 | 2 327 | ± 6 |
16.1 | 0.09 | 377 | 83 | 0.23 | 120.0 | 0.139 9 | 0.48 | 7.167 | 1.10 | 0.371 8 | 0.95 | 0.894 | 2 216 | ±10 |
17.1 | 0.03 | 116 | 51 | 0.45 | 46.3 | 0.160 3 | 0.73 | 10.380 | 1.40 | 0.466 0 | 1.20 | 0.857 | 2 456 | ±12 |
18.1 | 0.02 | 958 | 318 | 0.34 | 241.0 | 0.134 5 | 0.38 | 5.428 | 0.95 | 0.292 7 | 0.87 | 0.918 | 2 155 | ± 7 |
19.1 | - | 316 | 104 | 0.34 | 133.0 | 0.166 9 | 0.45 | 11.280 | 1.10 | 0.490 7 | 0.97 | 0.908 | 2 527 | ± 8 |
20.1 | 0.09 | 270 | 324 | 1.24 | 110.0 | 0.168 1 | 0.48 | 10.900 | 1.10 | 0.475 3 | 1.00 | 0.901 | 2 531 | ± 9 |
21.1 | 0.06 | 704 | 135 | 0.20 | 154.0 | 0.133 2 | 0.45 | 4.612 | 10.00 | 0.253 9 | 0.89 | 0.891 | 2 133 | ± 8 |
22.1 | 0.03 | 457 | 171 | 0.39 | 157.0 | 0.152 0 | 0.43 | 8.237 | 1.00 | 0.397 7 | 0.93 | 0.907 | 2 366 | ± 7 |
23.1 | 0.06 | 670 | 178 | 0.28 | 216.0 | 0.152 4 | 0.39 | 7.859 | 0.99 | 0.375 1 | 0.91 | 0.919 | 2 367 | ± 7 |
24.1 | 0.02 | 264 | 30 | 0.12 | 77.0 | 0.118 6 | 0.64 | 5.505 | 1.20 | 0.338 8 | 1.00 | 0.841 | 1 933 | ±12 |
25.1 | 0.01 | 598 | 272 | 0.47 | 212.0 | 0.1572 | 0.37 | 8.829 | 0.98 | 0.4122 | 0.91 | 0.923 | 2 425 | ± 6 |
26.1 | - | 46 | 41 | 0.91 | 18.9 | 0.169 0 | 1.10 | 11.000 | 1.90 | 0.476 6 | 1.60 | 0.828 | 2 559 | ±19 |
27.1 | 0.03 | 387 | 141 | 0.38 | 161.0 | 0.168 5 | 0.42 | 11.260 | 1.10 | 0.483 5 | 0.97 | 0.918 | 2 540 | ± 7 |
28.1 | 0.01 | 2 080 | 183 | 0.09 | 568.0 | 0.145 4 | 0.29 | 6.390 | 0.91 | 0.318 0 | 0.86 | 0.949 | 2 292 | ± 5 |
29.1 | 0.01 | 603 | 107 | 0.18 | 212.0 | 0.159 3 | 0.38 | 9.012 | 0.98 | 0.410 4 | 0.91 | 0.923 | 2 447 | ± 6 |
30.1 | 0.05 | 217 | 227 | 1.08 | 88.3 | 0.166 4 | 0.53 | 10.920 | 1.20 | 0.474 1 | 1.00 | 0.891 | 2 517 | ± 9 |
31.1 | 0.05 | 381 | 78 | 0.21 | 101.0 | 0.111 9 | 0.58 | 4.712 | 1.10 | 0.309 4 | 0.94 | 0.848 | 1 823 | ±12 |
32.1 | 0.09 | 325 | 101 | 0.32 | 104.0 | 0.152 1 | 0.69 | 7.863 | 1.20 | 0.371 8 | 0.95 | 0.810 | 2 360 | ±12 |
33.1 | 0.01 | 520 | 195 | 0.39 | 214.0 | 0.156 5 | 0.38 | 10.510 | 0.98 | 0.479 9 | 0.90 | 0.925 | 2 418 | ± 6 |
34.1 | 0.07 | 387 | 53 | 0.14 | 108.0 | 0.111 4 | 0.62 | 4.930 | 1.10 | 0.323 3 | 0.93 | 0.828 | 1 811 | ±12 |
35.1 | 0.35 | 396 | 53 | 0.14 | 128.0 | 0.154 4 | 0.49 | 7.866 | 1.10 | 0.3753 | 0.97 | 0.891 | 2361 | ±10 |
地点 | 岩性 | 产状 | 测年方法 | 形成时代/Ma | 变质时代/Ma | 资料来源 |
---|---|---|---|---|---|---|
辽宁建平 | 磁铁石英岩 | SHRIMP锆石U-Pb | 2 520±11 | 2 487±1,1 806±16 | 文献[ | |
陈台沟铁矿 | 绿泥石英片岩 | 与BIF互层 | 锆石LA-ICP-MS | 2 551±10 | 2 469±23 | 文献[ |
南芬铁矿 | 绿泥角闪片岩 | 与BIF互层 | 锆石LA-ICP-MS | 2 554±14 | 2 484±12 | 文献[ |
磁铁石英岩 | 锆石LA-ICP-MS | 2 480±63 | ||||
歪头山铁矿 | 斜长角闪岩 | 与BIF互层 | 锆石SIMS | 2 533±11 | 文献[ | |
东鞍山铁矿 | 黑云绿泥石英片岩 | 与BIF互层 | SHRIMP锆石U-Pb | 2 544±8 | 文献[ | |
齐大山铁矿 | 黑云变粒岩 | BIF围岩 | SHRIMP锆石U-Pb | 2 533±53 | 文献[ | |
正长花岗岩 | 侵入BIF | SHRIMP锆石U-Pb | 2 503±10 | 文献[ | ||
黑云绿泥石英片岩 | 与BIF互层 | SHRIMP锆石U-Pb | 2 530±6 | 文献[ | ||
辽宁弓长岭铁矿 | 黑云变粒岩 | BIF围岩 | SHRIMP锆石U-Pb | 2 550 | 文献[ | |
蚀变石榴石岩 | BIF围岩 | SHRIMP锆石U-Pb | 1 840±7 | 文献[ | ||
角闪变粒岩 | BIF围岩 | SHRIMP锆石U-Pb | 2 528±10 | 文献[ | ||
辽宁小莱河铁矿 | 角闪变粒岩 | 与BIF互层 | SHRIMP锆石U-Pb | 2 515±6 | 文献[ | |
BIF围岩 | SHRIMP锆石U-Pb | 2 510±7 | 2 479±5 | |||
鲁西杨庄铁矿 | 含磁铁矿斜长角闪岩 | BIF围岩 | 锆石LA-ICP-MS | 2 615±61 | 文献[ | |
黑云母石英片岩 | 与BIF互层 | 2 527±66 | ||||
混合花岗岩 | 侵入BIF | 2 469±34 | ||||
山东颜店铁矿 | 变质长英质火山岩 | BIF围岩 | SHRIMP锆石U-Pb | 2 561±15 | 文献[ | |
冀东水厂铁矿 | 斜长角闪岩 | 与BIF互层 | 锆石SIMS | 2 547±7 | 2 513±4 | 文献[ |
冀东王寺峪铁矿 | 黑云斜长片麻岩 | 与BIF互层 | LA-ICP-MS | 2 516±9 | 文献[ | |
冀东周台子 | 斜长角闪岩 | BIF围岩 | 锆石SIMS | 2 512±21 | 2 394±55 | 文献[ |
黑云变粒岩 | 与BIF互层 | 2 537±13 | ||||
冀东司家营铁矿 | 角闪斜长片麻岩 | 与BIF互层 | 锆石SIMS | 2 543±14 | 文献[ | |
黑云斜长片麻岩 | BIF围岩 | 2535±8 | ||||
冀东黄柏峪铁矿 | 黑云变粒岩-片麻岩 | BIF围岩 | SHRIMP锆石U-Pb | 2 534±8 | 文献[ | |
冀东马兰庄铁矿 | 片麻质花岗状条带 | 与BIF互层 | SHRIMP锆石U-Pb | 2 484±23 | 文献[ | |
冀东石人沟铁矿 | 角闪斜长片麻岩 | 与BIF互层 | 锆石SIMS | 2 553±31 | 2 510±21 | 文献[ |
冀东迁西组 | 混合片麻岩及其矿体岩脉 | BIF围岩和互层 | SHRIMP锆石U-Pb | 2 520 | 2 485~2 511 | 文献[ |
沙厂铁矿附近 | 细粒黑云二长质岩 | BIF围岩 | 单颗粒锆石U-Pb | 2 460±12 | 文献[ | |
沙厂铁矿区 | 斜长二辉麻粒岩 | 与BIF互层 | 单颗粒锆石U-Pb | 2 478±10 | 文献[ | |
北京密云四合堂群 | 黑云斜长片麻岩 | BIF围岩 | SHRIMP锆石U-Pb | 2 542±17 | 2 505±6,2 448±21 | 文献[ |
Table 2 The formation epoch and metamorphic ages of the rocks associated with Precambrian BIF in the North China Craton
地点 | 岩性 | 产状 | 测年方法 | 形成时代/Ma | 变质时代/Ma | 资料来源 |
---|---|---|---|---|---|---|
辽宁建平 | 磁铁石英岩 | SHRIMP锆石U-Pb | 2 520±11 | 2 487±1,1 806±16 | 文献[ | |
陈台沟铁矿 | 绿泥石英片岩 | 与BIF互层 | 锆石LA-ICP-MS | 2 551±10 | 2 469±23 | 文献[ |
南芬铁矿 | 绿泥角闪片岩 | 与BIF互层 | 锆石LA-ICP-MS | 2 554±14 | 2 484±12 | 文献[ |
磁铁石英岩 | 锆石LA-ICP-MS | 2 480±63 | ||||
歪头山铁矿 | 斜长角闪岩 | 与BIF互层 | 锆石SIMS | 2 533±11 | 文献[ | |
东鞍山铁矿 | 黑云绿泥石英片岩 | 与BIF互层 | SHRIMP锆石U-Pb | 2 544±8 | 文献[ | |
齐大山铁矿 | 黑云变粒岩 | BIF围岩 | SHRIMP锆石U-Pb | 2 533±53 | 文献[ | |
正长花岗岩 | 侵入BIF | SHRIMP锆石U-Pb | 2 503±10 | 文献[ | ||
黑云绿泥石英片岩 | 与BIF互层 | SHRIMP锆石U-Pb | 2 530±6 | 文献[ | ||
辽宁弓长岭铁矿 | 黑云变粒岩 | BIF围岩 | SHRIMP锆石U-Pb | 2 550 | 文献[ | |
蚀变石榴石岩 | BIF围岩 | SHRIMP锆石U-Pb | 1 840±7 | 文献[ | ||
角闪变粒岩 | BIF围岩 | SHRIMP锆石U-Pb | 2 528±10 | 文献[ | ||
辽宁小莱河铁矿 | 角闪变粒岩 | 与BIF互层 | SHRIMP锆石U-Pb | 2 515±6 | 文献[ | |
BIF围岩 | SHRIMP锆石U-Pb | 2 510±7 | 2 479±5 | |||
鲁西杨庄铁矿 | 含磁铁矿斜长角闪岩 | BIF围岩 | 锆石LA-ICP-MS | 2 615±61 | 文献[ | |
黑云母石英片岩 | 与BIF互层 | 2 527±66 | ||||
混合花岗岩 | 侵入BIF | 2 469±34 | ||||
山东颜店铁矿 | 变质长英质火山岩 | BIF围岩 | SHRIMP锆石U-Pb | 2 561±15 | 文献[ | |
冀东水厂铁矿 | 斜长角闪岩 | 与BIF互层 | 锆石SIMS | 2 547±7 | 2 513±4 | 文献[ |
冀东王寺峪铁矿 | 黑云斜长片麻岩 | 与BIF互层 | LA-ICP-MS | 2 516±9 | 文献[ | |
冀东周台子 | 斜长角闪岩 | BIF围岩 | 锆石SIMS | 2 512±21 | 2 394±55 | 文献[ |
黑云变粒岩 | 与BIF互层 | 2 537±13 | ||||
冀东司家营铁矿 | 角闪斜长片麻岩 | 与BIF互层 | 锆石SIMS | 2 543±14 | 文献[ | |
黑云斜长片麻岩 | BIF围岩 | 2535±8 | ||||
冀东黄柏峪铁矿 | 黑云变粒岩-片麻岩 | BIF围岩 | SHRIMP锆石U-Pb | 2 534±8 | 文献[ | |
冀东马兰庄铁矿 | 片麻质花岗状条带 | 与BIF互层 | SHRIMP锆石U-Pb | 2 484±23 | 文献[ | |
冀东石人沟铁矿 | 角闪斜长片麻岩 | 与BIF互层 | 锆石SIMS | 2 553±31 | 2 510±21 | 文献[ |
冀东迁西组 | 混合片麻岩及其矿体岩脉 | BIF围岩和互层 | SHRIMP锆石U-Pb | 2 520 | 2 485~2 511 | 文献[ |
沙厂铁矿附近 | 细粒黑云二长质岩 | BIF围岩 | 单颗粒锆石U-Pb | 2 460±12 | 文献[ | |
沙厂铁矿区 | 斜长二辉麻粒岩 | 与BIF互层 | 单颗粒锆石U-Pb | 2 478±10 | 文献[ | |
北京密云四合堂群 | 黑云斜长片麻岩 | BIF围岩 | SHRIMP锆石U-Pb | 2 542±17 | 2 505±6,2 448±21 | 文献[ |
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