喜马拉雅康巴淡色花岗岩的高分异成因及 岩浆⁃热液演化特征
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刘志超, 刘小驰, 俞良军, 王建刚
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Highly fractionated origin and magmtic⁃hydrothermal evolution of the Kampa leucogranites in the Tethyan Himalaya
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Zhichao Liu, Xiaochi Liu, Liangjun Yu, Jian'gang Wang
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表1 康巴淡色花岗岩主微量元素组成
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Table 1 Major and trace element compositions of the Kamba leucogranites
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| 13KB01 | 13KB03 | 13KB05 | 13KB17 | GBY02 | GBY37 | GBY39 | GBY41 |
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主量成分(wt.%) | | | | | | | | SiO2 | 74.83 | 74.74 | 75.64 | 74.42 | 74.79 | 75.81 | 75.21 | 76.57 | TiO2 | <0.01 | 0.03 | <0.01 | 0.01 | 0.01 | <0.01 | <0.01 | <0.01 | Al2O3 | 14.53 | 14.08 | 14.15 | 14.89 | 14.69 | 14.32 | 14.52 | 13.92 | Fe2O3 | 0.36 | 0.4 | 0.39 | 0.63 | 0.56 | 0.46 | 0.44 | 0.43 | FeO | 0.32 | 0.36 | 0.35 | 0.57 | 0.50 | 0.41 | 0.40 | 0.39 | MnO | 0.13 | 0.01 | 0.2 | 0.06 | 0.01 | 0.07 | 0.05 | 0.06 | MgO | 0.04 | 0.09 | 0.06 | 0.07 | 0.09 | 0.04 | 0.04 | 0.06 | CaO | 0.44 | 0.69 | 0.69 | 0.93 | 0.91 | 0.72 | 0.88 | 0.66 | Na2O | 4.83 | 3.58 | 4.36 | 4.66 | 4.22 | 4.71 | 4.85 | 4.25 | K2O | 4.27 | 5.97 | 4.12 | 3.80 | 4.20 | 3.52 | 3.43 | 3.76 | P2O5 | 0.02 | 0.02 | 0.01 | 0.02 | 0.03 | 0.02 | 0.03 | 0.01 | 烧失量 | 0.44 | 0.36 | 0.40 | 0.60 | 0.64 | 0.53 | 0.46 | 0.54 | 总量 | 99.92 | 100 | 100.03 | 100.1 | 100.17 | 100.21 | 99.92 | 100.27 | A/CNK | 1.16 | 1.14 | 1.22 | 1.26 | 1.28 | 1.24 | 1.24 | 1.26 | Q | 29.60 | 29.64 | 33.08 | 30.89 | 32.34 | 33.49 | 32.18 | 36.08 | Or | 25.38 | 35.42 | 24.44 | 22.57 | 24.95 | 20.87 | 20.38 | 22.29 | Ab | 41.10 | 30.41 | 37.03 | 39.63 | 35.89 | 39.99 | 41.27 | 36.06 | D.I. | 96.08 | 95.46 | 94.55 | 93.09 | 93.17 | 94.36 | 93.83 | 94.43 | 微量元素(×10-6) | | | | | | | Ga | 21.50 | 15.3 | 21.3 | 23 | 19.5 | 19.9 | 20.7 | 21.3 | Rb | 417 | 445 | 362 | 270 | 318 | 314 | 301 | 308 | Sr | 4.60 | 12.7 | 10.8 | 23.3 | 39.8 | 16.7 | 20.5 | 19.7 | Y | 7.8 | 15.0 | 30.0 | 32.7 | 27.0 | 22.7 | 20.2 | 21.3 | Zr | 23.0 | 21.0 | 28.0 | 31.0 | 35.0 | 33.0 | 34.0 | 32.0 | Nb | 14.3 | 6.40 | 12.1 | 18.8 | 12.0 | 18.2 | 13.7 | 26.9 | Cs | 14.6 | 24.3 | 11.4 | 5.97 | 6.50 | 8.29 | 9.42 | 6.97 | Ba | 4.60 | 9.40 | 14.8 | 45.6 | 62.9 | 18.7 | 24.3 | 41.2 | La | 2.00 | 3.80 | 5.40 | 7.70 | 7.40 | 4.70 | 6.00 | 4.50 | Ce | 4.80 | 8.70 | 12.4 | 16.9 | 16.0 | 10.6 | 13.3 | 10.1 | Pr | 0.62 | 1.06 | 1.42 | 2.02 | 1.97 | 1.30 | 1.66 | 1.32 | Nd | 2.00 | 3.90 | 5.00 | 8.00 | 7.20 | 4.70 | 6.10 | 5.10 | Sm | 1.44 | 1.86 | 2.39 | 2.67 | 2.53 | 2.2 | 2.14 | 2.22 | Eu | 0.03 | 0.03 | 0.06 | 0.17 | 0.18 | 0.08 | 0.13 | 0.12 | Gd | 1.28 | 2.03 | 2.82 | 3.43 | 3.41 | 2.33 | 2.51 | 2.66 | Tb | 0.29 | 0.47 | 0.8 | 0.72 | 0.71 | 0.53 | 0.49 | 0.56 | Dy | 1.40 | 2.68 | 4.91 | 4.86 | 4.61 | 3.57 | 3.16 | 3.27 | Ho | 0.20 | 0.41 | 0.83 | 1.01 | 0.88 | 0.75 | 0.65 | 0.65 | Er | 0.48 | 1.20 | 2.26 | 3.20 | 2.20 | 2.18 | 1.93 | 1.86 | Tm | 0.09 | 0.22 | 0.47 | 0.60 | 0.33 | 0.42 | 0.34 | 0.41 | Yb | 0.64 | 1.84 | 3.77 | 4.17 | 2.05 | 3.06 | 2.46 | 3.3 | Lu | 0.09 | 0.25 | 0.53 | 0.59 | 0.26 | 0.45 | 0.36 | 0.49 | Hf | 3.00 | 2.40 | 2.20 | 1.50 | 1.40 | 1.80 | 1.90 | 2.00 | Ta | 3.70 | 3.70 | 4.60 | 2.20 | 1.40 | 7.70 | 2.20 | 9.20 | Pb | 26.0 | 124 | 36.0 | 26.0 | 37.0 | 33.0 | 25.0 | 29.0 | Th | 1.31 | 2.86 | 2.98 | 8.22 | 4.62 | 3.9 | 3.78 | 4.88 | U | 1.97 | 2.57 | 2.63 | 5.22 | 3.57 | 8.37 | 9.23 | 14.35 | Eu* | 0.004 | 0.05 | 0.07 | 0.17 | 0.19 | 0.11 | 0.17 | 0.15 | TE1,3 | 1.29 | 1.22 | 1.26 | 1.07 | 1.11 | 1.12 | 1.07 | 1.09 |
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