现代地质 ›› 2021, Vol. 35 ›› Issue (04): 940-954.DOI: 10.19657/j.geoscience.1000-8527.2020.107
袁亚平1(), 刘向东2(
), 张振凯2, 曾忠诚2, 何元方2
收稿日期:
2020-04-16
修回日期:
2020-12-01
出版日期:
2021-08-10
发布日期:
2021-09-08
通讯作者:
刘向东
作者简介:
刘向东,男,高级工程师,1985年出生,地质工程专业,主要从事区域地质调查及矿产勘查工作。Email: 283859688@qq.com。基金资助:
YUAN Yaping1(), LIU Xiangdong2(
), ZHANG Zhenkai2, ZENG Zhongcheng2, HE Yuanfang2
Received:
2020-04-16
Revised:
2020-12-01
Online:
2021-08-10
Published:
2021-09-08
Contact:
LIU Xiangdong
摘要:
对阿尔金索尔库里地区二长花岗岩进行了LA-ICP-MS锆石U-Pb定年及全岩主量、微量和稀土元素测试,结果表明二长花岗岩结晶年龄为(377.5±1.6) Ma和(377.4±2.1) Ma;具有高硅(SiO2=72.55%~76.41%)和高碱(K2O+Na2O=7.32%~8.59%)、正常的铝含量(A/CNK=0.92~1.08)、高TFeO/MgO比值(2.57~6.47)的特征,为高钾钙碱性系列;富集轻稀土元素,具有明显Eu负异常;微量元素富集Rb、Th、Y、Zr和Hf等元素,亏损Ba、Sr、P和Ti等元素。上述特征表明索尔库里二长花岗岩为A型花岗岩,是幔源物质底侵作用引发的长英质地壳(变杂砂岩)部分熔融形成的母岩浆经过分离结晶而形成的,且具有A1型花岗岩特征。结合区域地质资料及同期岩浆岩活动历史,认为索尔库里地区二长花岗岩形成于板内伸展构造环境,为晚泥盆世南阿尔金构造带由后造山环境向板内构造体制转换的产物。
中图分类号:
袁亚平, 刘向东, 张振凯, 曾忠诚, 何元方. 南阿尔金晚泥盆世构造体制转换:来自索尔库里二长花岗岩年代学和地球化学的制约[J]. 现代地质, 2021, 35(04): 940-954.
YUAN Yaping, LIU Xiangdong, ZHANG Zhenkai, ZENG Zhongcheng, HE Yuanfang. Late Devonian Tectonic Transition in South Altyn Tagh: Constraints from Geochronology and Geochemistry of the Suoerkuli Monzogranite[J]. Geoscience, 2021, 35(04): 940-954.
图2 二长花岗岩宏观(a)及镜下照片(b)(正交光下) Bt. 黑云母;Q. 石英;Pl. 斜长石;Mic. 微斜长石
Fig.2 Field photo (a) and microscopic thin-section photo (b) of the Suoerkuli monzogranite
测点号 | 同位素比值 | 年龄/Ma | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
207Pb/206Pb | 1σ | 207Pb/235U | 1σ | 206Pb/238U | 1σ | 208Pb/232Th | 1σ | 207Pb/206Pb | 1σ | 207Pb/235U | 1σ | 206Pb/238U | 1σ | ||||
D6533/1-1 | 0.055 50 | 0.001 61 | 0.461 45 | 0.012 52 | 0.060 28 | 0.000 48 | 0.018 28 | 0.000 27 | 432.2 | 63.13 | 385.3 | 8.70 | 377.4 | 2.91 | |||
D6533/1-2 | 0.057 26 | 0.002 27 | 0.476 52 | 0.018 09 | 0.060 34 | 0.000 62 | 0.019 43 | 0.000 45 | 501.2 | 85.49 | 395.7 | 12.44 | 377.7 | 3.79 | |||
D6533/1-3 | 0.115 44 | 0.005 22 | 0.822 90 | 0.035 06 | 0.051 69 | 0.000 82 | 0.025 35 | 0.000 73 | 1 886.8 | 79.18 | 609.7 | 19.53 | 324.9 | 5.03 | |||
D6533/1-4 | 0.062 63 | 0.003 17 | 0.521 22 | 0.025 43 | 0.060 35 | 0.000 82 | 0.017 76 | 0.000 51 | 695.6 | 104.20 | 426.0 | 16.97 | 377.7 | 4.99 | |||
D6533/1-5 | 0.053 27 | 0.002 34 | 0.443 07 | 0.018 74 | 0.060 32 | 0.000 65 | 0.017 91 | 0.000 37 | 340.1 | 96.15 | 372.4 | 13.19 | 377.5 | 3.95 | |||
D6533/1-6 | 0.053 89 | 0.001 67 | 0.448 47 | 0.013 06 | 0.060 34 | 0.000 49 | 0.018 71 | 0.000 31 | 366.4 | 68.06 | 376.2 | 9.16 | 377.7 | 3.00 | |||
D6533/1-7 | 0.053 25 | 0.002 59 | 0.443 44 | 0.020 84 | 0.060 39 | 0.000 74 | 0.017 85 | 0.000 45 | 339.5 | 106.21 | 372.7 | 14.66 | 378.0 | 4.51 | |||
D6533/1-8 | 0.057 09 | 0.001 72 | 0.474 13 | 0.013 41 | 0.060 23 | 0.000 51 | 0.018 26 | 0.000 31 | 494.3 | 65.68 | 394.0 | 9.24 | 377.0 | 3.08 | |||
D6533/1-9 | 0.052 81 | 0.002 10 | 0.439 41 | 0.016 80 | 0.060 34 | 0.000 60 | 0.018 30 | 0.000 36 | 320.5 | 88.04 | 369.8 | 11.85 | 377.7 | 3.67 | |||
D6533/1-10 | 0.054 10 | 0.001 57 | 0.449 76 | 0.012 19 | 0.060 29 | 0.000 48 | 0.018 56 | 0.000 27 | 374.9 | 63.71 | 377.1 | 8.53 | 377.4 | 2.93 | |||
D6533/1-11 | 0.054 53 | 0.001 84 | 0.453 32 | 0.014 54 | 0.060 29 | 0.000 54 | 0.018 82 | 0.000 34 | 392.8 | 73.32 | 379.6 | 10.16 | 377.4 | 3.28 | |||
D6533/1-12 | 0.052 61 | 0.001 55 | 0.437 81 | 0.012 13 | 0.060 35 | 0.000 48 | 0.018 10 | 0.000 27 | 312.1 | 65.62 | 368.7 | 8.56 | 377.7 | 2.92 | |||
D6533/1-13 | 0.050 25 | 0.001 79 | 0.417 44 | 0.014 22 | 0.060 25 | 0.000 55 | 0.018 15 | 0.000 39 | 206.4 | 80.72 | 354.2 | 10.19 | 377.1 | 3.34 | |||
D6533/1-14 | 0.055 15 | 0.003 49 | 0.458 13 | 0.028 16 | 0.060 24 | 0.000 98 | 0.017 41 | 0.000 55 | 418.4 | 135.44 | 383.0 | 19.61 | 377.1 | 5.96 | |||
D6533/1-15 | 0.051 78 | 0.002 43 | 0.431 06 | 0.019 57 | 0.060 38 | 0.000 69 | 0.017 86 | 0.000 43 | 275.6 | 103.88 | 363.9 | 13.89 | 377.9 | 4.19 | |||
D6533/1-16 | 0.053 34 | 0.001 87 | 0.444 06 | 0.014 79 | 0.060 37 | 0.000 57 | 0.018 67 | 0.000 38 | 343.3 | 77.16 | 373.1 | 10.40 | 377.9 | 3.44 | |||
D6533/1-17 | 0.067 61 | 0.002 15 | 0.461 14 | 0.013 80 | 0.049 46 | 0.000 46 | 0.017 66 | 0.000 31 | 856.7 | 64.67 | 385.0 | 9.59 | 311.2 | 2.82 | |||
D6533/1-18 | 0.241 44 | 0.004 61 | 2.008 88 | 0.032 16 | 0.060 34 | 0.000 55 | 0.046 20 | 0.000 49 | 3 129.5 | 30.07 | 1 118.5 | 10.85 | 377.7 | 3.32 | |||
D6533/1-19 | 0.103 45 | 0.002 79 | 0.766 22 | 0.018 96 | 0.053 71 | 0.000 50 | 0.024 25 | 0.000 40 | 1 687.0 | 48.91 | 577.6 | 10.90 | 337.3 | 3.07 | |||
D6533/1-20 | 0.055 32 | 0.001 67 | 0.460 45 | 0.013 10 | 0.060 36 | 0.000 51 | 0.018 00 | 0.000 25 | 425.1 | 65.48 | 384.6 | 9.10 | 377.8 | 3.11 | |||
D6533/1-21 | 0.058 50 | 0.002 58 | 0.486 00 | 0.020 64 | 0.060 24 | 0.000 72 | 0.021 50 | 0.000 54 | 548.7 | 93.52 | 402.2 | 14.10 | 377.1 | 4.39 | |||
D6533/1-22 | 0.061 04 | 0.002 35 | 0.508 21 | 0.018 78 | 0.060 37 | 0.000 64 | 0.020 85 | 0.000 45 | 640.6 | 80.86 | 417.2 | 12.64 | 377.9 | 3.89 | |||
D6533/1-23 | 0.057 73 | 0.002 12 | 0.479 92 | 0.016 87 | 0.060 28 | 0.000 61 | 0.019 09 | 0.000 34 | 519.2 | 79.00 | 398.0 | 11.58 | 377.4 | 3.72 | |||
D6533/1-24 | 0.059 82 | 0.003 83 | 0.498 08 | 0.031 00 | 0.060 38 | 0.001 04 | 0.021 45 | 0.000 85 | 596.9 | 132.97 | 410.4 | 21.01 | 377.9 | 6.33 | |||
PM034/3-1 | 0.065 37 | 0.002 84 | 0.543 27 | 0.022 62 | 0.060 24 | 0.000 74 | 0.022 65 | 0.000 51 | 786.4 | 88.65 | 440.6 | 14.88 | 377.1 | 4.49 | |||
PM034/3-2 | 0.087 93 | 0.003 31 | 0.731 75 | 0.026 08 | 0.060 32 | 0.000 72 | 0.031 05 | 0.000 67 | 1 381.0 | 70.61 | 557.6 | 15.29 | 377.6 | 4.39 | |||
PM034/3-3 | 0.061 14 | 0.003 91 | 0.508 28 | 0.031 54 | 0.060 27 | 0.001 03 | 0.021 88 | 0.000 81 | 644.1 | 131.65 | 417.3 | 21.23 | 377.3 | 6.24 | |||
PM034/3-4 | 0.082 27 | 0.002 72 | 0.684 25 | 0.021 21 | 0.060 30 | 0.000 62 | 0.025 09 | 0.000 49 | 1 252.0 | 63.19 | 529.3 | 12.78 | 377.4 | 3.79 | |||
PM034/3-5 | 0.066 97 | 0.002 94 | 0.557 81 | 0.023 47 | 0.060 39 | 0.000 74 | 0.022 04 | 0.000 52 | 836.9 | 88.81 | 450.1 | 15.30 | 378.0 | 4.51 | |||
PM034/3-6 | 0.062 78 | 0.002 79 | 0.521 98 | 0.022 30 | 0.060 28 | 0.000 73 | 0.020 49 | 0.000 53 | 700.9 | 91.97 | 426.5 | 14.88 | 377.3 | 4.46 | |||
PM034/3-7 | 0.056 44 | 0.002 59 | 0.468 97 | 0.020 71 | 0.060 25 | 0.000 73 | 0.019 09 | 0.000 48 | 468.9 | 99.18 | 390.5 | 14.31 | 377.2 | 4.46 | |||
PM034/3-8 | 0.140 77 | 0.003 60 | 1.172 23 | 0.026 95 | 0.060 39 | 0.000 60 | 0.044 62 | 0.000 69 | 2 236.7 | 43.63 | 787.7 | 12.60 | 378.0 | 3.67 | |||
PM034/3-9 | 0.076 19 | 0.002 80 | 0.633 54 | 0.022 04 | 0.060 30 | 0.000 65 | 0.025 12 | 0.000 53 | 1 100.1 | 71.71 | 498.3 | 13.70 | 377.4 | 3.95 | |||
PM034/3-10 | 0.071 40 | 0.007 26 | 0.594 72 | 0.058 90 | 0.060 40 | 0.001 76 | 0.021 35 | 0.001 31 | 969.0 | 194.80 | 473.9 | 37.50 | 378.1 | 10.70 | |||
PM034/3-11 | 0.069 00 | 0.001 90 | 0.573 59 | 0.014 63 | 0.060 28 | 0.000 49 | 0.020 44 | 0.000 29 | 898.9 | 55.83 | 460.3 | 9.44 | 377.3 | 3.00 | |||
PM034/3-12 | 0.065 71 | 0.003 53 | 0.546 78 | 0.028 38 | 0.060 35 | 0.000 90 | 0.021 33 | 0.000 67 | 797.2 | 108.81 | 442.9 | 18.63 | 377.7 | 5.47 | |||
PM034/3-13 | 0.054 58 | 0.004 20 | 0.453 47 | 0.034 10 | 0.060 26 | 0.001 13 | 0.017 14 | 0.000 75 | 395.1 | 163.95 | 379.7 | 23.82 | 377.2 | 6.89 | |||
PM034/3-14 | 0.129 91 | 0.004 21 | 0.956 97 | 0.028 69 | 0.053 43 | 0.000 63 | 0.031 26 | 0.000 60 | 2 096.7 | 55.89 | 681.7 | 14.88 | 335.5 | 3.84 | |||
PM034/3-15 | 0.069 31 | 0.002 14 | 0.575 93 | 0.016 70 | 0.060 26 | 0.000 55 | 0.021 86 | 0.000 38 | 908.1 | 62.47 | 461.8 | 10.76 | 377.2 | 3.33 | |||
PM034/3-16 | 0.060 10 | 0.002 40 | 0.499 73 | 0.019 07 | 0.060 31 | 0.000 64 | 0.018 42 | 0.000 45 | 607.1 | 83.99 | 411.5 | 12.91 | 377.5 | 3.91 | |||
PM034/3-17 | 0.055 68 | 0.002 67 | 0.462 57 | 0.021 42 | 0.060 25 | 0.000 72 | 0.018 86 | 0.000 52 | 439.4 | 103.51 | 386.0 | 14.87 | 377.1 | 4.38 | |||
PM034/3-18 | 0.064 13 | 0.002 34 | 0.533 93 | 0.018 50 | 0.060 38 | 0.000 60 | 0.019 98 | 0.000 44 | 746.0 | 75.15 | 434.4 | 12.25 | 377.9 | 3.67 |
表1 索尔库里二长花岗岩LA-ICP-MS锆石U-Pb年代学测试结果
Table 1 LA-ICP-MS zircon U-Pb dating results of the Suoerkuli monzogranite
测点号 | 同位素比值 | 年龄/Ma | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
207Pb/206Pb | 1σ | 207Pb/235U | 1σ | 206Pb/238U | 1σ | 208Pb/232Th | 1σ | 207Pb/206Pb | 1σ | 207Pb/235U | 1σ | 206Pb/238U | 1σ | ||||
D6533/1-1 | 0.055 50 | 0.001 61 | 0.461 45 | 0.012 52 | 0.060 28 | 0.000 48 | 0.018 28 | 0.000 27 | 432.2 | 63.13 | 385.3 | 8.70 | 377.4 | 2.91 | |||
D6533/1-2 | 0.057 26 | 0.002 27 | 0.476 52 | 0.018 09 | 0.060 34 | 0.000 62 | 0.019 43 | 0.000 45 | 501.2 | 85.49 | 395.7 | 12.44 | 377.7 | 3.79 | |||
D6533/1-3 | 0.115 44 | 0.005 22 | 0.822 90 | 0.035 06 | 0.051 69 | 0.000 82 | 0.025 35 | 0.000 73 | 1 886.8 | 79.18 | 609.7 | 19.53 | 324.9 | 5.03 | |||
D6533/1-4 | 0.062 63 | 0.003 17 | 0.521 22 | 0.025 43 | 0.060 35 | 0.000 82 | 0.017 76 | 0.000 51 | 695.6 | 104.20 | 426.0 | 16.97 | 377.7 | 4.99 | |||
D6533/1-5 | 0.053 27 | 0.002 34 | 0.443 07 | 0.018 74 | 0.060 32 | 0.000 65 | 0.017 91 | 0.000 37 | 340.1 | 96.15 | 372.4 | 13.19 | 377.5 | 3.95 | |||
D6533/1-6 | 0.053 89 | 0.001 67 | 0.448 47 | 0.013 06 | 0.060 34 | 0.000 49 | 0.018 71 | 0.000 31 | 366.4 | 68.06 | 376.2 | 9.16 | 377.7 | 3.00 | |||
D6533/1-7 | 0.053 25 | 0.002 59 | 0.443 44 | 0.020 84 | 0.060 39 | 0.000 74 | 0.017 85 | 0.000 45 | 339.5 | 106.21 | 372.7 | 14.66 | 378.0 | 4.51 | |||
D6533/1-8 | 0.057 09 | 0.001 72 | 0.474 13 | 0.013 41 | 0.060 23 | 0.000 51 | 0.018 26 | 0.000 31 | 494.3 | 65.68 | 394.0 | 9.24 | 377.0 | 3.08 | |||
D6533/1-9 | 0.052 81 | 0.002 10 | 0.439 41 | 0.016 80 | 0.060 34 | 0.000 60 | 0.018 30 | 0.000 36 | 320.5 | 88.04 | 369.8 | 11.85 | 377.7 | 3.67 | |||
D6533/1-10 | 0.054 10 | 0.001 57 | 0.449 76 | 0.012 19 | 0.060 29 | 0.000 48 | 0.018 56 | 0.000 27 | 374.9 | 63.71 | 377.1 | 8.53 | 377.4 | 2.93 | |||
D6533/1-11 | 0.054 53 | 0.001 84 | 0.453 32 | 0.014 54 | 0.060 29 | 0.000 54 | 0.018 82 | 0.000 34 | 392.8 | 73.32 | 379.6 | 10.16 | 377.4 | 3.28 | |||
D6533/1-12 | 0.052 61 | 0.001 55 | 0.437 81 | 0.012 13 | 0.060 35 | 0.000 48 | 0.018 10 | 0.000 27 | 312.1 | 65.62 | 368.7 | 8.56 | 377.7 | 2.92 | |||
D6533/1-13 | 0.050 25 | 0.001 79 | 0.417 44 | 0.014 22 | 0.060 25 | 0.000 55 | 0.018 15 | 0.000 39 | 206.4 | 80.72 | 354.2 | 10.19 | 377.1 | 3.34 | |||
D6533/1-14 | 0.055 15 | 0.003 49 | 0.458 13 | 0.028 16 | 0.060 24 | 0.000 98 | 0.017 41 | 0.000 55 | 418.4 | 135.44 | 383.0 | 19.61 | 377.1 | 5.96 | |||
D6533/1-15 | 0.051 78 | 0.002 43 | 0.431 06 | 0.019 57 | 0.060 38 | 0.000 69 | 0.017 86 | 0.000 43 | 275.6 | 103.88 | 363.9 | 13.89 | 377.9 | 4.19 | |||
D6533/1-16 | 0.053 34 | 0.001 87 | 0.444 06 | 0.014 79 | 0.060 37 | 0.000 57 | 0.018 67 | 0.000 38 | 343.3 | 77.16 | 373.1 | 10.40 | 377.9 | 3.44 | |||
D6533/1-17 | 0.067 61 | 0.002 15 | 0.461 14 | 0.013 80 | 0.049 46 | 0.000 46 | 0.017 66 | 0.000 31 | 856.7 | 64.67 | 385.0 | 9.59 | 311.2 | 2.82 | |||
D6533/1-18 | 0.241 44 | 0.004 61 | 2.008 88 | 0.032 16 | 0.060 34 | 0.000 55 | 0.046 20 | 0.000 49 | 3 129.5 | 30.07 | 1 118.5 | 10.85 | 377.7 | 3.32 | |||
D6533/1-19 | 0.103 45 | 0.002 79 | 0.766 22 | 0.018 96 | 0.053 71 | 0.000 50 | 0.024 25 | 0.000 40 | 1 687.0 | 48.91 | 577.6 | 10.90 | 337.3 | 3.07 | |||
D6533/1-20 | 0.055 32 | 0.001 67 | 0.460 45 | 0.013 10 | 0.060 36 | 0.000 51 | 0.018 00 | 0.000 25 | 425.1 | 65.48 | 384.6 | 9.10 | 377.8 | 3.11 | |||
D6533/1-21 | 0.058 50 | 0.002 58 | 0.486 00 | 0.020 64 | 0.060 24 | 0.000 72 | 0.021 50 | 0.000 54 | 548.7 | 93.52 | 402.2 | 14.10 | 377.1 | 4.39 | |||
D6533/1-22 | 0.061 04 | 0.002 35 | 0.508 21 | 0.018 78 | 0.060 37 | 0.000 64 | 0.020 85 | 0.000 45 | 640.6 | 80.86 | 417.2 | 12.64 | 377.9 | 3.89 | |||
D6533/1-23 | 0.057 73 | 0.002 12 | 0.479 92 | 0.016 87 | 0.060 28 | 0.000 61 | 0.019 09 | 0.000 34 | 519.2 | 79.00 | 398.0 | 11.58 | 377.4 | 3.72 | |||
D6533/1-24 | 0.059 82 | 0.003 83 | 0.498 08 | 0.031 00 | 0.060 38 | 0.001 04 | 0.021 45 | 0.000 85 | 596.9 | 132.97 | 410.4 | 21.01 | 377.9 | 6.33 | |||
PM034/3-1 | 0.065 37 | 0.002 84 | 0.543 27 | 0.022 62 | 0.060 24 | 0.000 74 | 0.022 65 | 0.000 51 | 786.4 | 88.65 | 440.6 | 14.88 | 377.1 | 4.49 | |||
PM034/3-2 | 0.087 93 | 0.003 31 | 0.731 75 | 0.026 08 | 0.060 32 | 0.000 72 | 0.031 05 | 0.000 67 | 1 381.0 | 70.61 | 557.6 | 15.29 | 377.6 | 4.39 | |||
PM034/3-3 | 0.061 14 | 0.003 91 | 0.508 28 | 0.031 54 | 0.060 27 | 0.001 03 | 0.021 88 | 0.000 81 | 644.1 | 131.65 | 417.3 | 21.23 | 377.3 | 6.24 | |||
PM034/3-4 | 0.082 27 | 0.002 72 | 0.684 25 | 0.021 21 | 0.060 30 | 0.000 62 | 0.025 09 | 0.000 49 | 1 252.0 | 63.19 | 529.3 | 12.78 | 377.4 | 3.79 | |||
PM034/3-5 | 0.066 97 | 0.002 94 | 0.557 81 | 0.023 47 | 0.060 39 | 0.000 74 | 0.022 04 | 0.000 52 | 836.9 | 88.81 | 450.1 | 15.30 | 378.0 | 4.51 | |||
PM034/3-6 | 0.062 78 | 0.002 79 | 0.521 98 | 0.022 30 | 0.060 28 | 0.000 73 | 0.020 49 | 0.000 53 | 700.9 | 91.97 | 426.5 | 14.88 | 377.3 | 4.46 | |||
PM034/3-7 | 0.056 44 | 0.002 59 | 0.468 97 | 0.020 71 | 0.060 25 | 0.000 73 | 0.019 09 | 0.000 48 | 468.9 | 99.18 | 390.5 | 14.31 | 377.2 | 4.46 | |||
PM034/3-8 | 0.140 77 | 0.003 60 | 1.172 23 | 0.026 95 | 0.060 39 | 0.000 60 | 0.044 62 | 0.000 69 | 2 236.7 | 43.63 | 787.7 | 12.60 | 378.0 | 3.67 | |||
PM034/3-9 | 0.076 19 | 0.002 80 | 0.633 54 | 0.022 04 | 0.060 30 | 0.000 65 | 0.025 12 | 0.000 53 | 1 100.1 | 71.71 | 498.3 | 13.70 | 377.4 | 3.95 | |||
PM034/3-10 | 0.071 40 | 0.007 26 | 0.594 72 | 0.058 90 | 0.060 40 | 0.001 76 | 0.021 35 | 0.001 31 | 969.0 | 194.80 | 473.9 | 37.50 | 378.1 | 10.70 | |||
PM034/3-11 | 0.069 00 | 0.001 90 | 0.573 59 | 0.014 63 | 0.060 28 | 0.000 49 | 0.020 44 | 0.000 29 | 898.9 | 55.83 | 460.3 | 9.44 | 377.3 | 3.00 | |||
PM034/3-12 | 0.065 71 | 0.003 53 | 0.546 78 | 0.028 38 | 0.060 35 | 0.000 90 | 0.021 33 | 0.000 67 | 797.2 | 108.81 | 442.9 | 18.63 | 377.7 | 5.47 | |||
PM034/3-13 | 0.054 58 | 0.004 20 | 0.453 47 | 0.034 10 | 0.060 26 | 0.001 13 | 0.017 14 | 0.000 75 | 395.1 | 163.95 | 379.7 | 23.82 | 377.2 | 6.89 | |||
PM034/3-14 | 0.129 91 | 0.004 21 | 0.956 97 | 0.028 69 | 0.053 43 | 0.000 63 | 0.031 26 | 0.000 60 | 2 096.7 | 55.89 | 681.7 | 14.88 | 335.5 | 3.84 | |||
PM034/3-15 | 0.069 31 | 0.002 14 | 0.575 93 | 0.016 70 | 0.060 26 | 0.000 55 | 0.021 86 | 0.000 38 | 908.1 | 62.47 | 461.8 | 10.76 | 377.2 | 3.33 | |||
PM034/3-16 | 0.060 10 | 0.002 40 | 0.499 73 | 0.019 07 | 0.060 31 | 0.000 64 | 0.018 42 | 0.000 45 | 607.1 | 83.99 | 411.5 | 12.91 | 377.5 | 3.91 | |||
PM034/3-17 | 0.055 68 | 0.002 67 | 0.462 57 | 0.021 42 | 0.060 25 | 0.000 72 | 0.018 86 | 0.000 52 | 439.4 | 103.51 | 386.0 | 14.87 | 377.1 | 4.38 | |||
PM034/3-18 | 0.064 13 | 0.002 34 | 0.533 93 | 0.018 50 | 0.060 38 | 0.000 60 | 0.019 98 | 0.000 44 | 746.0 | 75.15 | 434.4 | 12.25 | 377.9 | 3.67 |
图4 索尔库里二长花岗岩样品D6533/1 ((a)和(b))、PM034/3 ((c)和(d)) U-Pb年龄谐和图及加权平均年龄图
Fig.4 Zircon U-Pb concordia diagrams and weighted average ages of samples D6533/1 ((a) and (b)), and PM034/3 ((c) and (d)) from the Suoerkuli monzogranite
样品编号 | SiO2 | TiO2 | Al2O3 | Fe2O3 | FeO | MnO | MgO | CaO | Na2O | K2O | P2O5 | 烧失量 | 总量 | TFeO | TFeO/ MgO | |||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PM031/6 | 76.41 | 0.18 | 12.1 | 0.41 | 0.78 | 0.03 | 0.32 | 0.95 | 3.08 | 4.24 | 0.02 | 1.24 | 99.76 | 1.15 | 3.59 | |||||||||||||||||
PM026/6 | 75.75 | 0.17 | 12.03 | 1.07 | 0.17 | 0.03 | 0.44 | 1.19 | 3.47 | 4.44 | 0.02 | 1.01 | 99.77 | 1.13 | 2.57 | |||||||||||||||||
PM031/10 | 75.43 | 0.23 | 13.07 | 0.55 | 0.92 | 0.05 | 0.41 | 1.07 | 3.74 | 3.66 | 0.03 | 0.69 | 99.85 | 1.41 | 3.45 | |||||||||||||||||
PM031/11 | 73.53 | 0.19 | 12.47 | 0.54 | 0.91 | 0.06 | 0.45 | 1.90 | 3.49 | 3.99 | 0.03 | 2.20 | 99.76 | 1.40 | 3.10 | |||||||||||||||||
D6533/1 | 72.55 | 0.34 | 13.66 | 0.57 | 1.62 | 0.06 | 0.71 | 1.59 | 3.60 | 4.05 | 0.06 | 0.91 | 99.72 | 2.13 | 3.00 | |||||||||||||||||
PM034/3 | 74.03 | 0.21 | 13.6 | 0.54 | 1.26 | 0.04 | 0.27 | 0.42 | 4.41 | 4.18 | 0.02 | 0.72 | 99.70 | 1.75 | 6.47 | |||||||||||||||||
样品编号 | K2O/ Na2O | σ | SI | DI | A/CNK | A/NK | A/MF | C/MF | La | Ce | Pr | Nd | Sm | Eu | Gd | |||||||||||||||||
PM031/6 | 1.38 | 1.60 | 3.62 | 91.90 | 1.06 | 1.25 | 4.96 | 0.71 | 23.8 | 42.4 | 4.03 | 13.5 | 2.22 | 0.47 | 2.06 | |||||||||||||||||
PM026/6 | 1.28 | 1.90 | 4.61 | 92.32 | 0.95 | 1.14 | 4.42 | 0.80 | 23.3 | 43.2 | 4.45 | 13.4 | 2.44 | 0.54 | 2.20 | |||||||||||||||||
PM031/10 | 0.98 | 1.68 | 4.42 | 90.46 | 1.08 | 1.29 | 4.29 | 0.64 | 21.6 | 44.3 | 4.45 | 15.6 | 2.95 | 0.71 | 2.61 | |||||||||||||||||
PM031/11 | 1.14 | 1.82 | 4.8 | 88.69 | 0.92 | 1.24 | 4.00 | 1.11 | 25.9 | 45.1 | 4.06 | 13.4 | 2.24 | 0.49 | 1.90 | |||||||||||||||||
D6533/1 | 1.13 | 1.97 | 6.73 | 86.30 | 1.04 | 1.32 | 2.83 | 0.60 | 25.5 | 55.6 | 5.73 | 19.3 | 3.64 | 0.92 | 3.20 | |||||||||||||||||
PM034/3 | 0.95 | 2.37 | 2.53 | 93.38 | 1.08 | 1.15 | 4.30 | 0.24 | 21.0 | 48.2 | 4.45 | 15.6 | 2.73 | 0.50 | 2.46 | |||||||||||||||||
样品编号 | Tb | Dy | Ho | Er | Tm | Yb | Lu | Y | REE | LREE | HREE | LREE/ HREE | (La/ Yb)N | δEu | δCe | |||||||||||||||||
PM031/6 | 0.31 | 1.48 | 0.42 | 1.10 | 0.20 | 1.52 | 0.23 | 10.7 | 93.74 | 86.42 | 7.32 | 11.81 | 11.23 | 0.67 | 1.06 | |||||||||||||||||
PM026/6 | 0.35 | 2.01 | 0.43 | 1.34 | 0.20 | 1.55 | 0.27 | 10.6 | 95.68 | 87.33 | 8.35 | 10.46 | 10.78 | 0.71 | 1.04 | |||||||||||||||||
PM031/10 | 0.47 | 2.04 | 0.54 | 1.57 | 0.28 | 2.01 | 0.35 | 14.7 | 99.48 | 89.61 | 9.87 | 9.08 | 7.71 | 0.78 | 1.11 | |||||||||||||||||
PM031/11 | 0.33 | 1.48 | 0.39 | 1.17 | 0.21 | 1.54 | 0.27 | 11.3 | 98.48 | 91.19 | 7.29 | 12.51 | 12.06 | 0.73 | 1.08 | |||||||||||||||||
D6533/1 | 0.54 | 2.80 | 0.64 | 1.70 | 0.30 | 1.99 | 0.30 | 15.9 | 122.16 | 110.69 | 11.47 | 9.65 | 9.19 | 0.82 | 1.13 | |||||||||||||||||
PM034/3 | 0.45 | 2.22 | 0.58 | 1.61 | 0.29 | 2.10 | 0.32 | 14.1 | 102.51 | 92.48 | 10.03 | 9.22 | 7.17 | 0.59 | 1.22 | |||||||||||||||||
样品编号 | Cu | Pb | Zn | Co | Ni | Cr | V | Ga | Sc | Sr | Ba | Rb | Nb | Ta | Zr | Hf | U | Th | ||||||||||||||
PM031/6 | 35.0 | 20.2 | 20.4 | 1.36 | 2.49 | 10.7 | 13.6 | 15.3 | 2.5 | 89.4 | 320 | 207 | 12.2 | 8.57 | 102.0 | 3.09 | 2.53 | 28.4 | ||||||||||||||
PM026/6 | 14.0 | 19.5 | 13.3 | 2.06 | 3.03 | 5.0 | 10.5 | 13.0 | 2.0 | 126.0 | 336 | 137 | 13.3 | 5.23 | 74.1 | 2.96 | 2.71 | 41.8 | ||||||||||||||
PM031/10 | 5.6 | 19.7 | 29.6 | 2.18 | 2.99 | 8.1 | 12.7 | 14.8 | 3.2 | 125.0 | 280 | 183 | 19.8 | 2.58 | 117.0 | 3.75 | 2.48 | 38.6 | ||||||||||||||
PM031/11 | 6.8 | 14.8 | 24.2 | 2.08 | 3.78 | 6.2 | 14.0 | 14.7 | 5.6 | 105.0 | 212 | 189 | 11.1 | 5.59 | 89.8 | 3.41 | 2.68 | 31.0 | ||||||||||||||
D6533/1 | 6.9 | 18.9 | 31.1 | 3.88 | 4.25 | 8.1 | 22.0 | 15.1 | 4.6 | 193.0 | 430 | 161 | 14.0 | 7.02 | 130.0 | 2.53 | 2.03 | 29.0 | ||||||||||||||
PM034/3 | 9.8 | 17.3 | 32.1 | 2.00 | 3.22 | 4.8 | 10.2 | 16.8 | 2.9 | 96.3 | 589 | 175 | 15.3 | 2.04 | 195.0 | 4.79 | 2.41 | 33.6 |
表2 二长花岗岩样品主量(%)、微量(10-6)和稀土(10-6)元素分析结果
Table 2 Major (%), trace element (10-6) and REE (10-6) contents of the monzogranite samples
样品编号 | SiO2 | TiO2 | Al2O3 | Fe2O3 | FeO | MnO | MgO | CaO | Na2O | K2O | P2O5 | 烧失量 | 总量 | TFeO | TFeO/ MgO | |||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PM031/6 | 76.41 | 0.18 | 12.1 | 0.41 | 0.78 | 0.03 | 0.32 | 0.95 | 3.08 | 4.24 | 0.02 | 1.24 | 99.76 | 1.15 | 3.59 | |||||||||||||||||
PM026/6 | 75.75 | 0.17 | 12.03 | 1.07 | 0.17 | 0.03 | 0.44 | 1.19 | 3.47 | 4.44 | 0.02 | 1.01 | 99.77 | 1.13 | 2.57 | |||||||||||||||||
PM031/10 | 75.43 | 0.23 | 13.07 | 0.55 | 0.92 | 0.05 | 0.41 | 1.07 | 3.74 | 3.66 | 0.03 | 0.69 | 99.85 | 1.41 | 3.45 | |||||||||||||||||
PM031/11 | 73.53 | 0.19 | 12.47 | 0.54 | 0.91 | 0.06 | 0.45 | 1.90 | 3.49 | 3.99 | 0.03 | 2.20 | 99.76 | 1.40 | 3.10 | |||||||||||||||||
D6533/1 | 72.55 | 0.34 | 13.66 | 0.57 | 1.62 | 0.06 | 0.71 | 1.59 | 3.60 | 4.05 | 0.06 | 0.91 | 99.72 | 2.13 | 3.00 | |||||||||||||||||
PM034/3 | 74.03 | 0.21 | 13.6 | 0.54 | 1.26 | 0.04 | 0.27 | 0.42 | 4.41 | 4.18 | 0.02 | 0.72 | 99.70 | 1.75 | 6.47 | |||||||||||||||||
样品编号 | K2O/ Na2O | σ | SI | DI | A/CNK | A/NK | A/MF | C/MF | La | Ce | Pr | Nd | Sm | Eu | Gd | |||||||||||||||||
PM031/6 | 1.38 | 1.60 | 3.62 | 91.90 | 1.06 | 1.25 | 4.96 | 0.71 | 23.8 | 42.4 | 4.03 | 13.5 | 2.22 | 0.47 | 2.06 | |||||||||||||||||
PM026/6 | 1.28 | 1.90 | 4.61 | 92.32 | 0.95 | 1.14 | 4.42 | 0.80 | 23.3 | 43.2 | 4.45 | 13.4 | 2.44 | 0.54 | 2.20 | |||||||||||||||||
PM031/10 | 0.98 | 1.68 | 4.42 | 90.46 | 1.08 | 1.29 | 4.29 | 0.64 | 21.6 | 44.3 | 4.45 | 15.6 | 2.95 | 0.71 | 2.61 | |||||||||||||||||
PM031/11 | 1.14 | 1.82 | 4.8 | 88.69 | 0.92 | 1.24 | 4.00 | 1.11 | 25.9 | 45.1 | 4.06 | 13.4 | 2.24 | 0.49 | 1.90 | |||||||||||||||||
D6533/1 | 1.13 | 1.97 | 6.73 | 86.30 | 1.04 | 1.32 | 2.83 | 0.60 | 25.5 | 55.6 | 5.73 | 19.3 | 3.64 | 0.92 | 3.20 | |||||||||||||||||
PM034/3 | 0.95 | 2.37 | 2.53 | 93.38 | 1.08 | 1.15 | 4.30 | 0.24 | 21.0 | 48.2 | 4.45 | 15.6 | 2.73 | 0.50 | 2.46 | |||||||||||||||||
样品编号 | Tb | Dy | Ho | Er | Tm | Yb | Lu | Y | REE | LREE | HREE | LREE/ HREE | (La/ Yb)N | δEu | δCe | |||||||||||||||||
PM031/6 | 0.31 | 1.48 | 0.42 | 1.10 | 0.20 | 1.52 | 0.23 | 10.7 | 93.74 | 86.42 | 7.32 | 11.81 | 11.23 | 0.67 | 1.06 | |||||||||||||||||
PM026/6 | 0.35 | 2.01 | 0.43 | 1.34 | 0.20 | 1.55 | 0.27 | 10.6 | 95.68 | 87.33 | 8.35 | 10.46 | 10.78 | 0.71 | 1.04 | |||||||||||||||||
PM031/10 | 0.47 | 2.04 | 0.54 | 1.57 | 0.28 | 2.01 | 0.35 | 14.7 | 99.48 | 89.61 | 9.87 | 9.08 | 7.71 | 0.78 | 1.11 | |||||||||||||||||
PM031/11 | 0.33 | 1.48 | 0.39 | 1.17 | 0.21 | 1.54 | 0.27 | 11.3 | 98.48 | 91.19 | 7.29 | 12.51 | 12.06 | 0.73 | 1.08 | |||||||||||||||||
D6533/1 | 0.54 | 2.80 | 0.64 | 1.70 | 0.30 | 1.99 | 0.30 | 15.9 | 122.16 | 110.69 | 11.47 | 9.65 | 9.19 | 0.82 | 1.13 | |||||||||||||||||
PM034/3 | 0.45 | 2.22 | 0.58 | 1.61 | 0.29 | 2.10 | 0.32 | 14.1 | 102.51 | 92.48 | 10.03 | 9.22 | 7.17 | 0.59 | 1.22 | |||||||||||||||||
样品编号 | Cu | Pb | Zn | Co | Ni | Cr | V | Ga | Sc | Sr | Ba | Rb | Nb | Ta | Zr | Hf | U | Th | ||||||||||||||
PM031/6 | 35.0 | 20.2 | 20.4 | 1.36 | 2.49 | 10.7 | 13.6 | 15.3 | 2.5 | 89.4 | 320 | 207 | 12.2 | 8.57 | 102.0 | 3.09 | 2.53 | 28.4 | ||||||||||||||
PM026/6 | 14.0 | 19.5 | 13.3 | 2.06 | 3.03 | 5.0 | 10.5 | 13.0 | 2.0 | 126.0 | 336 | 137 | 13.3 | 5.23 | 74.1 | 2.96 | 2.71 | 41.8 | ||||||||||||||
PM031/10 | 5.6 | 19.7 | 29.6 | 2.18 | 2.99 | 8.1 | 12.7 | 14.8 | 3.2 | 125.0 | 280 | 183 | 19.8 | 2.58 | 117.0 | 3.75 | 2.48 | 38.6 | ||||||||||||||
PM031/11 | 6.8 | 14.8 | 24.2 | 2.08 | 3.78 | 6.2 | 14.0 | 14.7 | 5.6 | 105.0 | 212 | 189 | 11.1 | 5.59 | 89.8 | 3.41 | 2.68 | 31.0 | ||||||||||||||
D6533/1 | 6.9 | 18.9 | 31.1 | 3.88 | 4.25 | 8.1 | 22.0 | 15.1 | 4.6 | 193.0 | 430 | 161 | 14.0 | 7.02 | 130.0 | 2.53 | 2.03 | 29.0 | ||||||||||||||
PM034/3 | 9.8 | 17.3 | 32.1 | 2.00 | 3.22 | 4.8 | 10.2 | 16.8 | 2.9 | 96.3 | 589 | 175 | 15.3 | 2.04 | 195.0 | 4.79 | 2.41 | 33.6 |
图6 二长花岗岩样品稀土元素球粒陨石标准化配分模式图(a)及微量元素原始地幔标准化蛛网图(b)(球粒陨石和原始地幔数据据文献[24])
Fig.6 Chondrite-normalized REE patterns(a)and primitive-mantle-normalized spider diagram(b)for the monzogranite samples(normalized data after ref.[24])
样品号 | Al2O3/% | CaO/% | K2O/% | Na2O/% | SiO2/% | Zr/10-6 | lnDZr | M | tZr/℃ |
---|---|---|---|---|---|---|---|---|---|
PM031/6 | 12.10 | 0.95 | 4.24 | 3.08 | 76.41 | 102.00 | 8.49 | 0.75 | 797 |
PM026/6 | 12.03 | 1.19 | 4.44 | 3.47 | 75.75 | 74.10 | 8.81 | 0.85 | 763 |
PM031/10 | 13.07 | 1.07 | 3.66 | 3.74 | 75.43 | 117.00 | 8.35 | 0.74 | 810 |
PM031/11 | 12.47 | 1.90 | 3.99 | 3.49 | 73.53 | 89.80 | 8.62 | 0.90 | 775 |
D6533/1 | 13.66 | 1.59 | 4.05 | 3.60 | 72.55 | 130.00 | 8.25 | 0.81 | 815 |
PM034/3 | 13.60 | 0.42 | 4.18 | 4.41 | 74.03 | 195.00 | 7.84 | 0.76 | 857 |
表3 二长花岗岩锆石饱和温度计算结果
Table 3 Results of zircon saturation temperature for the monzogranite samples
样品号 | Al2O3/% | CaO/% | K2O/% | Na2O/% | SiO2/% | Zr/10-6 | lnDZr | M | tZr/℃ |
---|---|---|---|---|---|---|---|---|---|
PM031/6 | 12.10 | 0.95 | 4.24 | 3.08 | 76.41 | 102.00 | 8.49 | 0.75 | 797 |
PM026/6 | 12.03 | 1.19 | 4.44 | 3.47 | 75.75 | 74.10 | 8.81 | 0.85 | 763 |
PM031/10 | 13.07 | 1.07 | 3.66 | 3.74 | 75.43 | 117.00 | 8.35 | 0.74 | 810 |
PM031/11 | 12.47 | 1.90 | 3.99 | 3.49 | 73.53 | 89.80 | 8.62 | 0.90 | 775 |
D6533/1 | 13.66 | 1.59 | 4.05 | 3.60 | 72.55 | 130.00 | 8.25 | 0.81 | 815 |
PM034/3 | 13.60 | 0.42 | 4.18 | 4.41 | 74.03 | 195.00 | 7.84 | 0.76 | 857 |
图7 二长花岗岩样品(K2O+Na2O-CaO)-SiO2图解(a)与Na2O-K2O图解(b)(底图分别据文献[38]和[37])
Fig.7 (K2O+Na2O-CaO) vs. SiO2 (a) and Na2O vs. K2O (b) diagrams of the monzogranite samples(base map after refs.[38] and [37], respectively)
图8 二长花岗岩样品K2O/Na2O-CaO/(MgO+TFeO)图解((a),底图据文献[65])和A/MF-C/MF图解((b),底图据文献[66])
Fig.8 K2O/Na2O vs. CaO/(MgO+TFeO) (a) and A/MF vs. C/MF (b) diagrams for the monzogranite samples(base map after refs.[65] and [66], respectively)
图9 索尔库里二长花岗岩Ce/Nb-Y/Nb图解(a)和Nb-Y-3Ga三角图解(b)(底图据文献[71])
Fig.9 Ce/Nb-Y/Nb (a) and ternary Nb-Y-3Ga (b) diagrams for the monzogranite samples (base map after reference[71])
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