Geoscience ›› 2021, Vol. 35 ›› Issue (05): 1231-1239.DOI: 10.19657/j.geoscience.1000-8527.2020.052
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CHENG Tianshe(), YANG Wenjing, ZHANG Xuebin, WU Rongze, ZHOU Changhong
Received:
2019-09-20
Revised:
2021-04-09
Online:
2021-10-10
Published:
2021-11-04
CLC Number:
CHENG Tianshe, YANG Wenjing, ZHANG Xuebin, WU Rongze, ZHOU Changhong. Zircon U-Pb Age and Geochemical Characteristics of the Granodiorite in Wulanwutai, Inner Mongolia and Its Geological Significance[J]. Geoscience, 2021, 35(05): 1231-1239.
测试点 | 同位素比值 | 年龄/Ma | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
206Pb/238U | 207Pb/235U | 207Pb/206Pb | 208Pb/232Th | 232Th/238U | 206Pb/238U | 1σ | 207Pb/235U | 1σ | 207Pb/206Pb | 1σ | ||
1 | 0.06 | 0.54 | 0.06 | 0.02 | 0.41 | 390.4 | 3.5 | 440.0 | 13.2 | 708.6 | 61.7 | |
2 | 0.07 | 0.51 | 0.06 | 0.04 | 0.12 | 408.2 | 5.5 | 419.3 | 10.5 | 480.8 | 58.6 | |
3 | 0.06 | 0.51 | 0.06 | 0.04 | 0.19 | 381.8 | 4.3 | 420.6 | 19.3 | 639.8 | 95.7 | |
4 | 0.06 | 0.54 | 0.06 | 0.03 | 0.17 | 393.0 | 3.8 | 435.5 | 8.4 | 667.0 | 38.5 | |
5 | 0.06 | 0.57 | 0.06 | 0.03 | 0.42 | 396.2 | 3.6 | 455.1 | 9.3 | 764.4 | 42.0 | |
6 | 0.06 | 0.46 | 0.06 | 0.02 | 0.27 | 375.3 | 3.4 | 384.5 | 9.3 | 440.4 | 53.9 | |
7 | 0.07 | 0.53 | 0.06 | 0.02 | 0.51 | 423.0 | 4.1 | 430.8 | 14.8 | 472.5 | 75.6 | |
8 | 0.06 | 0.50 | 0.06 | 0.02 | 0.33 | 378.8 | 4.0 | 414.5 | 11.2 | 618.5 | 60.0 | |
9 | 0.06 | 0.52 | 0.06 | 0.05 | 0.21 | 375.7 | 7.7 | 427.0 | 32.9 | 714.0 | 143.1 | |
10 | 0.06 | 0.50 | 0.06 | 0.03 | 0.21 | 397.4 | 3.7 | 411.8 | 14.3 | 493.3 | 75.0 | |
11 | 0.06 | 0.50 | 0.06 | 0.01 | 0.96 | 399.6 | 5.0 | 414.0 | 6.8 | 495.0 | 39.4 | |
12 | 0.06 | 0.44 | 0.05 | 0.02 | 0.26 | 371.4 | 4.2 | 372.0 | 6.7 | 375.7 | 43.0 | |
13 | 0.06 | 0.46 | 0.06 | 0.02 | 0.44 | 374.6 | 3.9 | 381.2 | 14.0 | 421.4 | 81.3 | |
14 | 0.06 | 0.46 | 0.05 | 0.02 | 0.41 | 380.7 | 3.9 | 381.5 | 14.9 | 386.2 | 84.4 | |
15 | 0.07 | 0.55 | 0.06 | 0.03 | 0.61 | 431.5 | 4.6 | 444.0 | 14.2 | 509.2 | 73.7 | |
16 | 0.06 | 0.45 | 0.05 | 0.02 | 0.26 | 383.0 | 3.5 | 380.3 | 11.1 | 363.7 | 63.0 | |
17 | 0.06 | 0.48 | 0.05 | 0.02 | 0.37 | 396.0 | 5.8 | 396.7 | 12.7 | 401.3 | 70.1 | |
18 | 0.06 | 0.45 | 0.05 | 0.02 | 0.33 | 374.0 | 4.3 | 375.2 | 6.7 | 382.6 | 39.0 | |
19 | 0.06 | 0.50 | 0.06 | 0.02 | 0.18 | 401.5 | 4.8 | 414.3 | 9.3 | 486.6 | 49.3 | |
20 | 0.06 | 0.45 | 0.05 | 0.02 | 0.34 | 375.3 | 4.2 | 380.3 | 7.4 | 410.8 | 42.5 |
Table 1 LA-ICP-MS zircon U-Pb age data of the Wulanwutai granodiorite (sample WGHS.37)
测试点 | 同位素比值 | 年龄/Ma | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
206Pb/238U | 207Pb/235U | 207Pb/206Pb | 208Pb/232Th | 232Th/238U | 206Pb/238U | 1σ | 207Pb/235U | 1σ | 207Pb/206Pb | 1σ | ||
1 | 0.06 | 0.54 | 0.06 | 0.02 | 0.41 | 390.4 | 3.5 | 440.0 | 13.2 | 708.6 | 61.7 | |
2 | 0.07 | 0.51 | 0.06 | 0.04 | 0.12 | 408.2 | 5.5 | 419.3 | 10.5 | 480.8 | 58.6 | |
3 | 0.06 | 0.51 | 0.06 | 0.04 | 0.19 | 381.8 | 4.3 | 420.6 | 19.3 | 639.8 | 95.7 | |
4 | 0.06 | 0.54 | 0.06 | 0.03 | 0.17 | 393.0 | 3.8 | 435.5 | 8.4 | 667.0 | 38.5 | |
5 | 0.06 | 0.57 | 0.06 | 0.03 | 0.42 | 396.2 | 3.6 | 455.1 | 9.3 | 764.4 | 42.0 | |
6 | 0.06 | 0.46 | 0.06 | 0.02 | 0.27 | 375.3 | 3.4 | 384.5 | 9.3 | 440.4 | 53.9 | |
7 | 0.07 | 0.53 | 0.06 | 0.02 | 0.51 | 423.0 | 4.1 | 430.8 | 14.8 | 472.5 | 75.6 | |
8 | 0.06 | 0.50 | 0.06 | 0.02 | 0.33 | 378.8 | 4.0 | 414.5 | 11.2 | 618.5 | 60.0 | |
9 | 0.06 | 0.52 | 0.06 | 0.05 | 0.21 | 375.7 | 7.7 | 427.0 | 32.9 | 714.0 | 143.1 | |
10 | 0.06 | 0.50 | 0.06 | 0.03 | 0.21 | 397.4 | 3.7 | 411.8 | 14.3 | 493.3 | 75.0 | |
11 | 0.06 | 0.50 | 0.06 | 0.01 | 0.96 | 399.6 | 5.0 | 414.0 | 6.8 | 495.0 | 39.4 | |
12 | 0.06 | 0.44 | 0.05 | 0.02 | 0.26 | 371.4 | 4.2 | 372.0 | 6.7 | 375.7 | 43.0 | |
13 | 0.06 | 0.46 | 0.06 | 0.02 | 0.44 | 374.6 | 3.9 | 381.2 | 14.0 | 421.4 | 81.3 | |
14 | 0.06 | 0.46 | 0.05 | 0.02 | 0.41 | 380.7 | 3.9 | 381.5 | 14.9 | 386.2 | 84.4 | |
15 | 0.07 | 0.55 | 0.06 | 0.03 | 0.61 | 431.5 | 4.6 | 444.0 | 14.2 | 509.2 | 73.7 | |
16 | 0.06 | 0.45 | 0.05 | 0.02 | 0.26 | 383.0 | 3.5 | 380.3 | 11.1 | 363.7 | 63.0 | |
17 | 0.06 | 0.48 | 0.05 | 0.02 | 0.37 | 396.0 | 5.8 | 396.7 | 12.7 | 401.3 | 70.1 | |
18 | 0.06 | 0.45 | 0.05 | 0.02 | 0.33 | 374.0 | 4.3 | 375.2 | 6.7 | 382.6 | 39.0 | |
19 | 0.06 | 0.50 | 0.06 | 0.02 | 0.18 | 401.5 | 4.8 | 414.3 | 9.3 | 486.6 | 49.3 | |
20 | 0.06 | 0.45 | 0.05 | 0.02 | 0.34 | 375.3 | 4.2 | 380.3 | 7.4 | 410.8 | 42.5 |
样品编号 | SiO2 | TiO2 | Al2O3 | Fe2O3 | FeO | FeOt | MnO | MgO | CaO | Na2O | K2O | P2O5 | 总量 | A/CNK |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
A01 A02 | 73.01 70.48 | 0.64 0.67 | 11.70 12.89 | 0.88 0.59 | 2.84 3.71 | 3.63 4.25 | 0.06 0.07 | 1.71 2.12 | 1.27 1.75 | 2.15 2.29 | 3.94 3.10 | 0.11 0.08 | 100.00 100.00 | 1.16 1.25 |
样品编号 | Ba | Rb | Sr | Y | Zr | Nb | Th | Pb | Ga | Zn | Cu | V | Cr | Hf |
A01 A02 | 481.20 376.90 | 212.00 194.50 | 89.45 134.00 | 34.13 45.89 | 195.00 234.10 | 16.33 20.02 | 22.01 41.22 | 20.04 22.04 | 16.06 19.03 | 51.36 68.74 | 15.64 19.23 | 76.33 94.09 | 50.05 63.17 | 7.07 8.61 |
样品编号 | Ta | Co | U | W | Mo | Bi | Ti | La | Ce | Pr | Nd | Sm | Eu | Gd |
A01 A02 | 1.50 1.85 | 11.04 12.45 | 3.07 2.90 | 1.88 2.02 | 0.39 0.26 | 0.44 0.48 | 3 813.39 4 029.24 | 33.02 67.62 | 72.66 127.08 | 8.12 15.97 | 31.36 57.60 | 6.65 10.86 | 1.03 1.19 | 5.98 9.09 |
样品编号 | Tb | Dy | Ho | Er | Tm | Yb | Lu | δEu | LR/HR | (La/Yb)N | LREE | HREE | REE | |
A01 A02 | 1.11 1.51 | 7.17 9.13 | 1.35 1.83 | 3.95 5.31 | 0.66 0.85 | 4.00 5.10 | 0.56 0.73 | 0.49 0.36 | 6.17 8.36 | 5.57 8.94 | 152.84 280.32 | 24.78 33.55 | 177.62 313.87 |
Table 2 Contents of major (%) and trace (incl. REE) elements (10-6) of the Wulanwutai granodiorite
样品编号 | SiO2 | TiO2 | Al2O3 | Fe2O3 | FeO | FeOt | MnO | MgO | CaO | Na2O | K2O | P2O5 | 总量 | A/CNK |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
A01 A02 | 73.01 70.48 | 0.64 0.67 | 11.70 12.89 | 0.88 0.59 | 2.84 3.71 | 3.63 4.25 | 0.06 0.07 | 1.71 2.12 | 1.27 1.75 | 2.15 2.29 | 3.94 3.10 | 0.11 0.08 | 100.00 100.00 | 1.16 1.25 |
样品编号 | Ba | Rb | Sr | Y | Zr | Nb | Th | Pb | Ga | Zn | Cu | V | Cr | Hf |
A01 A02 | 481.20 376.90 | 212.00 194.50 | 89.45 134.00 | 34.13 45.89 | 195.00 234.10 | 16.33 20.02 | 22.01 41.22 | 20.04 22.04 | 16.06 19.03 | 51.36 68.74 | 15.64 19.23 | 76.33 94.09 | 50.05 63.17 | 7.07 8.61 |
样品编号 | Ta | Co | U | W | Mo | Bi | Ti | La | Ce | Pr | Nd | Sm | Eu | Gd |
A01 A02 | 1.50 1.85 | 11.04 12.45 | 3.07 2.90 | 1.88 2.02 | 0.39 0.26 | 0.44 0.48 | 3 813.39 4 029.24 | 33.02 67.62 | 72.66 127.08 | 8.12 15.97 | 31.36 57.60 | 6.65 10.86 | 1.03 1.19 | 5.98 9.09 |
样品编号 | Tb | Dy | Ho | Er | Tm | Yb | Lu | δEu | LR/HR | (La/Yb)N | LREE | HREE | REE | |
A01 A02 | 1.11 1.51 | 7.17 9.13 | 1.35 1.83 | 3.95 5.31 | 0.66 0.85 | 4.00 5.10 | 0.56 0.73 | 0.49 0.36 | 6.17 8.36 | 5.57 8.94 | 152.84 280.32 | 24.78 33.55 | 177.62 313.87 |
Fig.8 Chondrite-normalized REE distribution patterns and Primitive mantle-normalized trace elements distribution patterns of the granodiorite of Wulanwutai(base map after refs.[10,11])
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