现代地质 ›› 2023, Vol. 37 ›› Issue (02): 419-432.DOI: 10.19657/j.geoscience.1000-8527.2021.148
收稿日期:
2022-05-06
修回日期:
2022-10-11
出版日期:
2023-04-10
发布日期:
2023-05-23
作者简介:
刘金宝,男,高级工程师,1968年出生,地球化学与勘查专业,从事金属矿产、环境、农业生态等的地球化学勘查工作。Email: nmgljb@126.com。
基金资助:
LIU Jinbao1,2(), ZHU Luoting3, LI Longxue4, HOU Qingye4
Received:
2022-05-06
Revised:
2022-10-11
Online:
2023-04-10
Published:
2023-05-23
摘要:
艾力格庙地区位于索伦山—西拉木伦古生代结合带北部,是研究兴蒙造山带的重要地区之一。前人主要针对该区古生代的构造演化、岩浆岩及沉积岩开展了大量研究,很少针对早中生代岩浆岩开展相关研究工作。本次研究选择卫境岩体开展了详细的岩石学、年代学和地球化学研究。结果表明卫境钾长花岗岩形成于早白垩世(144.7 Ma),岩石属于准铝质高钾钙碱性;富硅富碱,相对富铁贫镁,钙铝偏低;具有较低的(87Sr/86Sr)i值,较高的εNd(t)和εHf(t)值,具有A型花岗岩的地球化学特征。其源区主要为来自亏损地幔新增生的地壳物质,形成于板内伸展构造环境。
中图分类号:
刘金宝, 朱洛婷, 李龙雪, 侯青叶. 内蒙古艾力格庙地区卫境岩体的地球化学特征及其构造意义[J]. 现代地质, 2023, 37(02): 419-432.
LIU Jinbao, ZHU Luoting, LI Longxue, HOU Qingye. Geochemistry and Tectonic Significance of the Weijing Pluton in Airgin Sum Area, Inner Mongolia[J]. Geoscience, 2023, 37(02): 419-432.
图1 卫境岩体地质简图(据1:20万区域地质图绘制) (a)图中:Ⅰ-2. 兴蒙古生代造山带;Ⅰ-2-4. 二连—贺根山晚泥盆世—早石炭世蛇绿混杂岩(叠接)带;Ⅱ-1. 索伦山—西拉木伦古生代结合带;Ⅱ-1-1. 白音查干—索伦山俯冲增生楔;Ⅱ-2. 上叠盆地;Ⅱ-2-1. 二连浩特新生代坳陷盆地;Ⅱ-2-2. 川井中、新生代坳陷。(b)图中:1. 第四系;2. 阿巴嘎组玄武岩;3. 新近系;4. 白垩系巴彦花组;5. 二叠系西里庙组;6. 新元古界艾力格庙组;7. 石炭纪石英闪长岩;8. 石炭纪闪长岩;9. 二叠纪辉长闪长岩;10. 二叠纪花岗岩;11. 白垩纪花岗岩;12. 采样位置及编号
Fig.1 Simplified geologic map of the Weijing pluton(modified from 1:200000, regional geologic map)
图3 卫境钾长花岗岩中锆石阴极发光图(a)、U-Pb年龄谐和图(b)及直方图(c)
Fig.3 Zircon cathodoluminescence (CL) images (a), U-Pb concordia diagram (b) and weighted average histogram (c) of the Weijing moyite
测点 | 含量(10-6) | Th/U | 同位素比值 | 年龄(Ma) | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Pb | Th | U | 207Pb/206Pb ±1σ | 207Pb/235U ±1σ | 206Pb/238U ±1σ | 207Pb/206Pb ±1σ | 207Pb/235U ±1σ | 206Pb/238U ±1σ | |||
1 | 8.4 | 63.5 | 141 | 0.45 | 0.05161±0.00318 | 0.16298±0.00918 | 0.02349±0.00034 | 333.39±173.13 | 153.31±8.01 | 149.66±2.15 | |
2 | 12.6 | 89.8 | 233 | 0.39 | 0.04912±0.00229 | 0.15919±0.00722 | 0.02379±0.00031 | 153.79±111.10 | 149.99±6.32 | 151.56±1.93 | |
3 | 24.1 | 185.0 | 381 | 0.49 | 0.04937±0.00211 | 0.15630±0.00687 | 0.02294±0.00026 | 164.90±99.99 | 147.46±6.03 | 146.18±1.64 | |
4 | 20.8 | 185.0 | 275 | 0.67 | 0.05170±0.00248 | 0.15245±0.00724 | 0.02164±0.00032 | 272.29±111.10 | 144.07±6.38 | 137.99±1.99 | |
5 | 14.1 | 132.0 | 108 | 1.22 | 0.05761±0.00399 | 0.17408±0.01164 | 0.02276±0.00043 | 516.71±153.68 | 162.95±10.06 | 145.10±2.69 | |
6 | 20.8 | 170.0 | 316 | 0.54 | 0.04916±0.00206 | 0.14998±0.00620 | 0.02237±0.00024 | 153.79±98.13 | 141.90±5.48 | 142.62±1.49 | |
7 | 22.8 | 162.0 | 451 | 0.36 | 0.04940±0.00180 | 0.16477±0.00622 | 0.02417±0.00027 | 168.60±85.17 | 154.87±5.42 | 153.97±1.71 | |
8 | 48.9 | 344.0 | 886 | 0.39 | 0.05293±0.00130 | 0.16334±0.00396 | 0.02236±0.00016 | 324.13±27.78 | 153.63±3.46 | 142.56±1.04 | |
11 | 11.5 | 92.2 | 174 | 0.53 | 0.04915±0.00295 | 0.15434±0.00906 | 0.02301±0.00033 | 153.79±145.35 | 145.73±7.97 | 146.63±2.06 | |
12 | 20.9 | 167.0 | 352 | 0.47 | 0.04876±0.00211 | 0.15156±0.00613 | 0.02270±0.00027 | 200.08±101.84 | 143.29±5.41 | 144.71±1.72 | |
14 | 8.10 | 63.8 | 124 | 0.52 | 0.05240±0.00311 | 0.16218±0.00966 | 0.02250±0.00033 | 301.91±135.17 | 152.61±8.44 | 143.41±2.06 | |
15 | 18.7 | 137.0 | 307 | 0.45 | 0.04824±0.00216 | 0.15479±0.00657 | 0.02332±0.00023 | 109.35±93.51 | 146.13±5.77 | 148.63±1.42 | |
17 | 13.9 | 87.9 | 300 | 0.29 | 0.04635±0.00204 | 0.14742±0.00643 | 0.02298±0.00023 | 16.77±99.99 | 139.63±5.69 | 146.48±1.47 | |
18 | 12.1 | 86.7 | 197 | 0.44 | 0.05065±0.00256 | 0.15458±0.00785 | 0.02226±0.00026 | 233.40±118.50 | 145.95±6.91 | 141.94±1.65 | |
19 | 12.2 | 88.2 | 201 | 0.44 | 0.05516±0.00272 | 0.17297±0.00830 | 0.02306±0.00034 | 420.42±109.25 | 162.00±7.18 | 146.95±2.14 | |
20 | 11.1 | 90.4 | 135 | 0.67 | 0.06122±0.00438 | 0.18870±0.01239 | 0.02298±0.00039 | 655.57±153.68 | 175.52±10.58 | 146.45±2.46 | |
21 | 15.3 | 133.0 | 163 | 0.81 | 0.05117±0.00311 | 0.16040±0.00950 | 0.02289±0.00035 | 255.62±140.72 | 151.06±8.32 | 145.93±2.20 | |
23 | 15.0 | 119.0 | 193 | 0.62 | 0.05260±0.00280 | 0.15851±0.00805 | 0.02241±0.00031 | 322.28±120.35 | 149.40±7.06 | 142.87±1.96 | |
25 | 35.9 | 257.0 | 498 | 0.52 | 0.05035±0.00192 | 0.16005±0.00599 | 0.02318±0.00023 | 209.33±88.88 | 150.75±5.24 | 147.75±1.43 |
表1 卫境钾长花岗岩(NMD33)锆石U-Pb分析结果
Table 1 Zircon U-Pb dating results of the Weijing moyite (sample NMD33)
测点 | 含量(10-6) | Th/U | 同位素比值 | 年龄(Ma) | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Pb | Th | U | 207Pb/206Pb ±1σ | 207Pb/235U ±1σ | 206Pb/238U ±1σ | 207Pb/206Pb ±1σ | 207Pb/235U ±1σ | 206Pb/238U ±1σ | |||
1 | 8.4 | 63.5 | 141 | 0.45 | 0.05161±0.00318 | 0.16298±0.00918 | 0.02349±0.00034 | 333.39±173.13 | 153.31±8.01 | 149.66±2.15 | |
2 | 12.6 | 89.8 | 233 | 0.39 | 0.04912±0.00229 | 0.15919±0.00722 | 0.02379±0.00031 | 153.79±111.10 | 149.99±6.32 | 151.56±1.93 | |
3 | 24.1 | 185.0 | 381 | 0.49 | 0.04937±0.00211 | 0.15630±0.00687 | 0.02294±0.00026 | 164.90±99.99 | 147.46±6.03 | 146.18±1.64 | |
4 | 20.8 | 185.0 | 275 | 0.67 | 0.05170±0.00248 | 0.15245±0.00724 | 0.02164±0.00032 | 272.29±111.10 | 144.07±6.38 | 137.99±1.99 | |
5 | 14.1 | 132.0 | 108 | 1.22 | 0.05761±0.00399 | 0.17408±0.01164 | 0.02276±0.00043 | 516.71±153.68 | 162.95±10.06 | 145.10±2.69 | |
6 | 20.8 | 170.0 | 316 | 0.54 | 0.04916±0.00206 | 0.14998±0.00620 | 0.02237±0.00024 | 153.79±98.13 | 141.90±5.48 | 142.62±1.49 | |
7 | 22.8 | 162.0 | 451 | 0.36 | 0.04940±0.00180 | 0.16477±0.00622 | 0.02417±0.00027 | 168.60±85.17 | 154.87±5.42 | 153.97±1.71 | |
8 | 48.9 | 344.0 | 886 | 0.39 | 0.05293±0.00130 | 0.16334±0.00396 | 0.02236±0.00016 | 324.13±27.78 | 153.63±3.46 | 142.56±1.04 | |
11 | 11.5 | 92.2 | 174 | 0.53 | 0.04915±0.00295 | 0.15434±0.00906 | 0.02301±0.00033 | 153.79±145.35 | 145.73±7.97 | 146.63±2.06 | |
12 | 20.9 | 167.0 | 352 | 0.47 | 0.04876±0.00211 | 0.15156±0.00613 | 0.02270±0.00027 | 200.08±101.84 | 143.29±5.41 | 144.71±1.72 | |
14 | 8.10 | 63.8 | 124 | 0.52 | 0.05240±0.00311 | 0.16218±0.00966 | 0.02250±0.00033 | 301.91±135.17 | 152.61±8.44 | 143.41±2.06 | |
15 | 18.7 | 137.0 | 307 | 0.45 | 0.04824±0.00216 | 0.15479±0.00657 | 0.02332±0.00023 | 109.35±93.51 | 146.13±5.77 | 148.63±1.42 | |
17 | 13.9 | 87.9 | 300 | 0.29 | 0.04635±0.00204 | 0.14742±0.00643 | 0.02298±0.00023 | 16.77±99.99 | 139.63±5.69 | 146.48±1.47 | |
18 | 12.1 | 86.7 | 197 | 0.44 | 0.05065±0.00256 | 0.15458±0.00785 | 0.02226±0.00026 | 233.40±118.50 | 145.95±6.91 | 141.94±1.65 | |
19 | 12.2 | 88.2 | 201 | 0.44 | 0.05516±0.00272 | 0.17297±0.00830 | 0.02306±0.00034 | 420.42±109.25 | 162.00±7.18 | 146.95±2.14 | |
20 | 11.1 | 90.4 | 135 | 0.67 | 0.06122±0.00438 | 0.18870±0.01239 | 0.02298±0.00039 | 655.57±153.68 | 175.52±10.58 | 146.45±2.46 | |
21 | 15.3 | 133.0 | 163 | 0.81 | 0.05117±0.00311 | 0.16040±0.00950 | 0.02289±0.00035 | 255.62±140.72 | 151.06±8.32 | 145.93±2.20 | |
23 | 15.0 | 119.0 | 193 | 0.62 | 0.05260±0.00280 | 0.15851±0.00805 | 0.02241±0.00031 | 322.28±120.35 | 149.40±7.06 | 142.87±1.96 | |
25 | 35.9 | 257.0 | 498 | 0.52 | 0.05035±0.00192 | 0.16005±0.00599 | 0.02318±0.00023 | 209.33±88.88 | 150.75±5.24 | 147.75±1.43 |
样品编号 | 岩性 | SiO2 | TiO2 | Al2O3 | TFe2O3 | FeO | MnO | MgO | CaO | Na2O | K2O | P2O5 | LOI |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NMD34 | 钾长花岗岩 | 75.66 | 0.18 | 12.24 | 1.00 | 0.26 | 0.02 | 0.20 | 0.62 | 3.84 | 5.08 | 0.06 | 0.55 |
NMD35 | 钾长花岗岩 | 75.04 | 0.20 | 12.58 | 1.19 | 0.26 | 0.02 | 0.22 | 0.74 | 3.89 | 5.12 | 0.06 | 0.57 |
NMD36 | 钾长花岗岩 | 74.03 | 0.31 | 12.58 | 1.84 | 0.71 | 0.04 | 0.34 | 0.80 | 3.90 | 5.01 | 0.11 | 0.51 |
NMD37 | 钾长花岗岩 | 75.37 | 0.17 | 12.80 | 0.83 | 0.19 | 0.01 | 0.13 | 0.53 | 3.90 | 5.36 | 0.05 | 0.45 |
NMD38 | 钾长花岗岩 | 76.38 | 0.10 | 12.28 | 0.64 | 0.13 | 0.01 | 0.11 | 0.50 | 3.35 | 5.88 | 0.03 | 0.56 |
NMD39 | 钾长花岗岩 | 76.09 | 0.08 | 12.36 | 0.77 | 0.32 | 0.02 | 0.14 | 0.37 | 3.31 | 6.09 | 0.04 | 0.61 |
NMD40 | 钾长花岗岩 | 75.91 | 0.19 | 12.25 | 1.20 | 0.39 | 0.02 | 0.21 | 0.74 | 3.73 | 5.00 | 0.07 | 0.51 |
NMD41 | 钾长花岗岩 | 73.27 | 0.28 | 13.08 | 1.66 | 0.39 | 0.03 | 0.26 | 0.80 | 3.86 | 5.54 | 0.10 | 0.67 |
样品编号 | 岩性 | 总量 | Na2O+ K2O | K2O/ Na2O | A/NK | A/CNK | AI | AR | SI | DI | σ | Mg# | FeOT/(FeOT+ MgO) |
NMD34 | 钾长花岗岩 | 99.45 | 8.92 | 1.32 | 1.04 | 0.95 | 0.97 | 3.97 | 1.93 | 95.84 | 2.44 | 57.83 | 0.85 |
NMD35 | 钾长花岗岩 | 99.63 | 9.01 | 1.32 | 1.05 | 0.95 | 0.95 | 3.81 | 2.07 | 95.01 | 2.53 | 60.13 | 0.86 |
NMD36 | 钾长花岗岩 | 99.47 | 8.91 | 1.28 | 1.06 | 0.95 | 0.94 | 3.80 | 2.90 | 92.97 | 2.56 | 46.05 | 0.87 |
NMD37 | 钾长花岗岩 | 99.60 | 9.26 | 1.37 | 1.05 | 0.97 | 0.95 | 3.82 | 1.25 | 96.29 | 2.65 | 54.95 | 0.88 |
NMD38 | 钾长花岗岩 | 99.84 | 9.23 | 1.76 | 1.03 | 0.96 | 0.97 | 3.20 | 1.09 | 97.01 | 2.55 | 60.13 | 0.87 |
NMD39 | 钾长花岗岩 | 99.88 | 9.40 | 1.84 | 1.03 | 0.97 | 0.97 | 3.17 | 1.32 | 96.94 | 2.67 | 43.82 | 0.88 |
NMD40 | 钾长花岗岩 | 99.84 | 8.73 | 1.34 | 1.06 | 0.95 | 0.94 | 3.70 | 2.00 | 94.75 | 2.32 | 48.98 | 0.88 |
NMD41 | 钾长花岗岩 | 99.55 | 9.40 | 1.44 | 1.06 | 0.95 | 0.94 | 3.51 | 2.23 | 93.85 | 2.92 | 54.30 | 0.88 |
表2 卫境岩体主量元素分析结果(%)
Table 2 Contents of major elements(%) of the Weijing pluton
样品编号 | 岩性 | SiO2 | TiO2 | Al2O3 | TFe2O3 | FeO | MnO | MgO | CaO | Na2O | K2O | P2O5 | LOI |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NMD34 | 钾长花岗岩 | 75.66 | 0.18 | 12.24 | 1.00 | 0.26 | 0.02 | 0.20 | 0.62 | 3.84 | 5.08 | 0.06 | 0.55 |
NMD35 | 钾长花岗岩 | 75.04 | 0.20 | 12.58 | 1.19 | 0.26 | 0.02 | 0.22 | 0.74 | 3.89 | 5.12 | 0.06 | 0.57 |
NMD36 | 钾长花岗岩 | 74.03 | 0.31 | 12.58 | 1.84 | 0.71 | 0.04 | 0.34 | 0.80 | 3.90 | 5.01 | 0.11 | 0.51 |
NMD37 | 钾长花岗岩 | 75.37 | 0.17 | 12.80 | 0.83 | 0.19 | 0.01 | 0.13 | 0.53 | 3.90 | 5.36 | 0.05 | 0.45 |
NMD38 | 钾长花岗岩 | 76.38 | 0.10 | 12.28 | 0.64 | 0.13 | 0.01 | 0.11 | 0.50 | 3.35 | 5.88 | 0.03 | 0.56 |
NMD39 | 钾长花岗岩 | 76.09 | 0.08 | 12.36 | 0.77 | 0.32 | 0.02 | 0.14 | 0.37 | 3.31 | 6.09 | 0.04 | 0.61 |
NMD40 | 钾长花岗岩 | 75.91 | 0.19 | 12.25 | 1.20 | 0.39 | 0.02 | 0.21 | 0.74 | 3.73 | 5.00 | 0.07 | 0.51 |
NMD41 | 钾长花岗岩 | 73.27 | 0.28 | 13.08 | 1.66 | 0.39 | 0.03 | 0.26 | 0.80 | 3.86 | 5.54 | 0.10 | 0.67 |
样品编号 | 岩性 | 总量 | Na2O+ K2O | K2O/ Na2O | A/NK | A/CNK | AI | AR | SI | DI | σ | Mg# | FeOT/(FeOT+ MgO) |
NMD34 | 钾长花岗岩 | 99.45 | 8.92 | 1.32 | 1.04 | 0.95 | 0.97 | 3.97 | 1.93 | 95.84 | 2.44 | 57.83 | 0.85 |
NMD35 | 钾长花岗岩 | 99.63 | 9.01 | 1.32 | 1.05 | 0.95 | 0.95 | 3.81 | 2.07 | 95.01 | 2.53 | 60.13 | 0.86 |
NMD36 | 钾长花岗岩 | 99.47 | 8.91 | 1.28 | 1.06 | 0.95 | 0.94 | 3.80 | 2.90 | 92.97 | 2.56 | 46.05 | 0.87 |
NMD37 | 钾长花岗岩 | 99.60 | 9.26 | 1.37 | 1.05 | 0.97 | 0.95 | 3.82 | 1.25 | 96.29 | 2.65 | 54.95 | 0.88 |
NMD38 | 钾长花岗岩 | 99.84 | 9.23 | 1.76 | 1.03 | 0.96 | 0.97 | 3.20 | 1.09 | 97.01 | 2.55 | 60.13 | 0.87 |
NMD39 | 钾长花岗岩 | 99.88 | 9.40 | 1.84 | 1.03 | 0.97 | 0.97 | 3.17 | 1.32 | 96.94 | 2.67 | 43.82 | 0.88 |
NMD40 | 钾长花岗岩 | 99.84 | 8.73 | 1.34 | 1.06 | 0.95 | 0.94 | 3.70 | 2.00 | 94.75 | 2.32 | 48.98 | 0.88 |
NMD41 | 钾长花岗岩 | 99.55 | 9.40 | 1.44 | 1.06 | 0.95 | 0.94 | 3.51 | 2.23 | 93.85 | 2.92 | 54.30 | 0.88 |
图5 卫境岩体SiO2-FeOT/(FeOT+MgO)(a)和SiO2-(Na2O+K2O-CaO)(b)图解(底图据Frost等[24])
Fig.5 SiO2-FeOT/(FeOT+MgO) (a) and SiO2-(Na2O+K2O-CaO) (b) plots for the Weijing pluton
图6 卫境钾长花岗岩TAS图解(底图据Middlemost[25])(a)和SiO2-K2O图解(底图据Ewart[26])(b) 1.橄榄辉长岩;2.辉长岩;3.辉长闪长岩;4.闪长岩;5.花岗闪长岩;6.花岗岩;7.似长石辉长岩;8.二长辉长岩;9.二长闪长岩;10.二长岩;11.石英二长岩;12.似长石岩;13.似长石二长闪长岩;14.似长石二长正长岩;15.正长岩;16.似长石正长岩
Fig.6 TAS diagram (a) and SiO2-K2O plot (b) for the Weijing moyite
样品编号 | Ag | As | Au | B | Ba | Be | Bi | Br | Cd | Cl | Co | Cr | Cs |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NMD34 | 0.042 | 1.70 | 0.17 | 7.19 | 388 | 7.29 | 0.108 | 0.6 | 0.023 | 71 | 1.51 | 12.2 | 8.11 |
NMD35 | 0.038 | 1.68 | 0.17 | 6.27 | 349 | 6.55 | 0.270 | 0.4 | 0.030 | 57 | 1.13 | 13.4 | 8.54 |
NMD36 | 0.033 | 1.64 | 0.16 | 5.94 | 363 | 8.44 | 0.365 | 0.8 | 0.030 | 83 | 2.36 | 14.7 | 11.05 |
NMD37 | 0.063 | 0.61 | 0.15 | 7.64 | 437 | 5.43 | 0.140 | 0.7 | 0.030 | 52 | 0.59 | 11.3 | 7.61 |
NMD38 | 0.095 | 0.50 | 0.18 | 4.41 | 225 | 3.25 | 0.090 | 0.6 | 0.030 | 52 | 0.67 | 10.9 | 5.88 |
NMD39 | 0.064 | 1.39 | 1.06 | 5.34 | 411 | 2.72 | 0.176 | 0.7 | 0.040 | 42 | 0.56 | 10.9 | 4.75 |
NMD40 | 0.041 | 1.24 | 0.22 | 5.73 | 418 | 4.95 | 0.138 | 0.2 | 0.040 | 49 | 1.29 | 10.9 | 4.59 |
NMD41 | 0.036 | 2.21 | 0.24 | 8.11 | 473 | 6.67 | 0.490 | 0.6 | 0.040 | 53 | 2.06 | 13.8 | 14.66 |
样品编号 | Cu | F | Ga | Ge | Hf | Hg | I | In | Li | Mo | N | Nb | Ni |
NMD34 | 4.07 | 570 | 18.6 | 1.30 | 2.73 | 7.75 | 0.41 | 0.021 | 32.11 | 0.55 | 111 | 14.6 | 3.86 |
NMD35 | 3.90 | 868 | 20.3 | 1.13 | 3.52 | 8.00 | 0.34 | 0.030 | 44.52 | 0.25 | 111 | 21.3 | 5.81 |
NMD36 | 4.05 | 746 | 20.0 | 1.51 | 4.78 | 8.21 | 0.37 | 0.040 | 49.83 | 1.62 | 97 | 28.0 | 4.19 |
NMD37 | 2.95 | 555 | 19.3 | 1.13 | 2.94 | 8.27 | 0.47 | 0.020 | 16.91 | 0.31 | 97 | 15.9 | 5.88 |
NMD38 | 3.24 | 206 | 16.0 | 0.91 | 2.03 | 5.91 | 0.41 | 0.010 | 3.74 | 0.38 | 97 | 6.6 | 5.77 |
NMD39 | 8.73 | 196 | 13.8 | 1.01 | 1.68 | 6.15 | 0.49 | 0.020 | 4.99 | 0.61 | 97 | 7.5 | 5.61 |
NMD40 | 4.84 | 651 | 17.8 | 1.16 | 3.13 | 7.81 | 0.41 | 0.020 | 22.38 | 1.31 | 111 | 16.6 | 5.39 |
NMD41 | 5.16 | 584 | 19.1 | 1.30 | 4.03 | 7.03 | 0.37 | 0.030 | 34.09 | 1.07 | 111 | 22.6 | 3.93 |
样品编号 | Pb | Rb | S | Sb | Sc | Se | Sn | Sr | Ta | Te | Th | Tl | U |
NMD34 | 27.35 | 263 | 57 | 0.078 | 1.79 | 0.028 | 3.25 | 142 | 2.02 | 0.024 | 24.04 | 1.35 | 1.33 |
NMD35 | 32.19 | 290 | 61 | 0.119 | 1.71 | 0.031 | 3.69 | 133 | 1.65 | 0.020 | 25.46 | 1.55 | 1.28 |
NMD36 | 35.10 | 293 | 99 | 0.231 | 2.76 | 0.036 | 5.30 | 147 | 2.59 | 0.030 | 43.02 | 1.48 | 3.91 |
NMD37 | 27.01 | 266 | 61 | 0.131 | 1.28 | 0.026 | 3.53 | 158 | 1.25 | 0.020 | 18.94 | 1.19 | 1.39 |
NMD38 | 41.41 | 207 | 74 | 0.051 | 1.37 | 0.027 | 1.63 | 92 | 0.58 | 0.010 | 48.19 | 1.08 | 2.63 |
NMD39 | 30.46 | 203 | 90 | 0.072 | 1.78 | 0.112 | 2.28 | 73 | 0.65 | 0.020 | 19.62 | 1.04 | 2.00 |
NMD40 | 22.55 | 237 | 63 | 0.087 | 1.44 | 0.029 | 2.94 | 164 | 1.77 | 0.020 | 21.80 | 1.05 | 2.68 |
NMD41 | 31.01 | 268 | 84 | 0.156 | 2.49 | 0.045 | 3.63 | 171 | 2.71 | 0.020 | 33.60 | 1.38 | 2.99 |
样品编号 | V | W | Zn | Zr | La | Ce | Pr | Nd | Sm | Eu | Gd | Tb | Dy |
NMD34 | 11 | 0.81 | 25 | 115 | 19.08 | 41.40 | 3.72 | 12.36 | 2.01 | 0.61 | 1.89 | 0.29 | 1.59 |
NMD35 | 16 | 1.33 | 33 | 144 | 19.45 | 33.97 | 3.81 | 12.93 | 2.20 | 0.59 | 1.97 | 0.30 | 1.67 |
NMD36 | 17 | 0.25 | 43 | 201 | 26.78 | 80.88 | 6.35 | 22.26 | 4.00 | 0.70 | 3.54 | 0.56 | 2.97 |
NMD37 | 13 | 1.12 | 23 | 121 | 19.49 | 35.41 | 3.75 | 12.42 | 1.93 | 0.51 | 1.72 | 0.23 | 1.12 |
NMD38 | 4 | 0.37 | 12 | 92 | 25.81 | 48.62 | 4.25 | 13.29 | 1.88 | 0.44 | 1.67 | 0.18 | 0.73 |
NMD39 | 9 | 0.66 | 17 | 70 | 7.85 | 17.74 | 1.50 | 5.30 | 1.04 | 0.45 | 1.02 | 0.18 | 1.12 |
NMD40 | 16 | 0.85 | 28 | 143 | 27.93 | 66.27 | 5.76 | 19.59 | 3.22 | 0.59 | 2.94 | 0.42 | 2.11 |
NMD41 | 20 | 2.26 | 34 | 184 | 34.70 | 75.31 | 7.57 | 25.97 | 4.42 | 0.82 | 3.94 | 0.58 | 3.01 |
样品编号 | Ho | Er | Tm | Yb | Lu | Y | 10000(Ga/ Al) | ∑REE | LREE/ HREE | (La/ Yb)N | (La/ Sm)N | (Gd/ Yb)N | δEu |
NMD34 | 0.32 | 0.99 | 0.17 | 1.18 | 0.19 | 9.34 | 2.87 | 85.80 | 11.96 | 11.60 | 6.13 | 1.33 | 0.94 |
NMD35 | 0.35 | 1.07 | 0.18 | 1.25 | 0.20 | 10.75 | 3.05 | 79.94 | 10.44 | 11.16 | 5.71 | 1.30 | 0.85 |
NMD36 | 0.59 | 1.79 | 0.29 | 2.01 | 0.32 | 17.10 | 3.00 | 153.04 | 11.68 | 9.56 | 4.32 | 1.46 | 0.56 |
NMD37 | 0.21 | 0.64 | 0.10 | 0.69 | 0.11 | 6.33 | 2.85 | 78.33 | 15.25 | 20.26 | 6.52 | 2.06 | 0.84 |
NMD38 | 0.14 | 0.44 | 0.07 | 0.47 | 0.08 | 4.16 | 2.46 | 98.07 | 24.94 | 39.39 | 8.86 | 2.94 | 0.74 |
NMD39 | 0.24 | 0.74 | 0.13 | 0.90 | 0.14 | 6.67 | 2.11 | 38.35 | 7.58 | 6.26 | 4.87 | 0.94 | 1.32 |
NMD40 | 0.41 | 1.23 | 0.19 | 1.30 | 0.19 | 12.28 | 2.74 | 132.15 | 14.03 | 15.41 | 5.60 | 1.87 | 0.58 |
NMD41 | 0.59 | 1.74 | 0.28 | 1.86 | 0.28 | 16.97 | 2.76 | 161.07 | 12.12 | 13.38 | 5.07 | 1.75 | 0.59 |
表3 卫境岩体微量元素(10-6)和稀土元素(10-6)分析结果
Table 3 Contents of trace elements(10-6) and REEs(10-6) of the Weijing pluton
样品编号 | Ag | As | Au | B | Ba | Be | Bi | Br | Cd | Cl | Co | Cr | Cs |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NMD34 | 0.042 | 1.70 | 0.17 | 7.19 | 388 | 7.29 | 0.108 | 0.6 | 0.023 | 71 | 1.51 | 12.2 | 8.11 |
NMD35 | 0.038 | 1.68 | 0.17 | 6.27 | 349 | 6.55 | 0.270 | 0.4 | 0.030 | 57 | 1.13 | 13.4 | 8.54 |
NMD36 | 0.033 | 1.64 | 0.16 | 5.94 | 363 | 8.44 | 0.365 | 0.8 | 0.030 | 83 | 2.36 | 14.7 | 11.05 |
NMD37 | 0.063 | 0.61 | 0.15 | 7.64 | 437 | 5.43 | 0.140 | 0.7 | 0.030 | 52 | 0.59 | 11.3 | 7.61 |
NMD38 | 0.095 | 0.50 | 0.18 | 4.41 | 225 | 3.25 | 0.090 | 0.6 | 0.030 | 52 | 0.67 | 10.9 | 5.88 |
NMD39 | 0.064 | 1.39 | 1.06 | 5.34 | 411 | 2.72 | 0.176 | 0.7 | 0.040 | 42 | 0.56 | 10.9 | 4.75 |
NMD40 | 0.041 | 1.24 | 0.22 | 5.73 | 418 | 4.95 | 0.138 | 0.2 | 0.040 | 49 | 1.29 | 10.9 | 4.59 |
NMD41 | 0.036 | 2.21 | 0.24 | 8.11 | 473 | 6.67 | 0.490 | 0.6 | 0.040 | 53 | 2.06 | 13.8 | 14.66 |
样品编号 | Cu | F | Ga | Ge | Hf | Hg | I | In | Li | Mo | N | Nb | Ni |
NMD34 | 4.07 | 570 | 18.6 | 1.30 | 2.73 | 7.75 | 0.41 | 0.021 | 32.11 | 0.55 | 111 | 14.6 | 3.86 |
NMD35 | 3.90 | 868 | 20.3 | 1.13 | 3.52 | 8.00 | 0.34 | 0.030 | 44.52 | 0.25 | 111 | 21.3 | 5.81 |
NMD36 | 4.05 | 746 | 20.0 | 1.51 | 4.78 | 8.21 | 0.37 | 0.040 | 49.83 | 1.62 | 97 | 28.0 | 4.19 |
NMD37 | 2.95 | 555 | 19.3 | 1.13 | 2.94 | 8.27 | 0.47 | 0.020 | 16.91 | 0.31 | 97 | 15.9 | 5.88 |
NMD38 | 3.24 | 206 | 16.0 | 0.91 | 2.03 | 5.91 | 0.41 | 0.010 | 3.74 | 0.38 | 97 | 6.6 | 5.77 |
NMD39 | 8.73 | 196 | 13.8 | 1.01 | 1.68 | 6.15 | 0.49 | 0.020 | 4.99 | 0.61 | 97 | 7.5 | 5.61 |
NMD40 | 4.84 | 651 | 17.8 | 1.16 | 3.13 | 7.81 | 0.41 | 0.020 | 22.38 | 1.31 | 111 | 16.6 | 5.39 |
NMD41 | 5.16 | 584 | 19.1 | 1.30 | 4.03 | 7.03 | 0.37 | 0.030 | 34.09 | 1.07 | 111 | 22.6 | 3.93 |
样品编号 | Pb | Rb | S | Sb | Sc | Se | Sn | Sr | Ta | Te | Th | Tl | U |
NMD34 | 27.35 | 263 | 57 | 0.078 | 1.79 | 0.028 | 3.25 | 142 | 2.02 | 0.024 | 24.04 | 1.35 | 1.33 |
NMD35 | 32.19 | 290 | 61 | 0.119 | 1.71 | 0.031 | 3.69 | 133 | 1.65 | 0.020 | 25.46 | 1.55 | 1.28 |
NMD36 | 35.10 | 293 | 99 | 0.231 | 2.76 | 0.036 | 5.30 | 147 | 2.59 | 0.030 | 43.02 | 1.48 | 3.91 |
NMD37 | 27.01 | 266 | 61 | 0.131 | 1.28 | 0.026 | 3.53 | 158 | 1.25 | 0.020 | 18.94 | 1.19 | 1.39 |
NMD38 | 41.41 | 207 | 74 | 0.051 | 1.37 | 0.027 | 1.63 | 92 | 0.58 | 0.010 | 48.19 | 1.08 | 2.63 |
NMD39 | 30.46 | 203 | 90 | 0.072 | 1.78 | 0.112 | 2.28 | 73 | 0.65 | 0.020 | 19.62 | 1.04 | 2.00 |
NMD40 | 22.55 | 237 | 63 | 0.087 | 1.44 | 0.029 | 2.94 | 164 | 1.77 | 0.020 | 21.80 | 1.05 | 2.68 |
NMD41 | 31.01 | 268 | 84 | 0.156 | 2.49 | 0.045 | 3.63 | 171 | 2.71 | 0.020 | 33.60 | 1.38 | 2.99 |
样品编号 | V | W | Zn | Zr | La | Ce | Pr | Nd | Sm | Eu | Gd | Tb | Dy |
NMD34 | 11 | 0.81 | 25 | 115 | 19.08 | 41.40 | 3.72 | 12.36 | 2.01 | 0.61 | 1.89 | 0.29 | 1.59 |
NMD35 | 16 | 1.33 | 33 | 144 | 19.45 | 33.97 | 3.81 | 12.93 | 2.20 | 0.59 | 1.97 | 0.30 | 1.67 |
NMD36 | 17 | 0.25 | 43 | 201 | 26.78 | 80.88 | 6.35 | 22.26 | 4.00 | 0.70 | 3.54 | 0.56 | 2.97 |
NMD37 | 13 | 1.12 | 23 | 121 | 19.49 | 35.41 | 3.75 | 12.42 | 1.93 | 0.51 | 1.72 | 0.23 | 1.12 |
NMD38 | 4 | 0.37 | 12 | 92 | 25.81 | 48.62 | 4.25 | 13.29 | 1.88 | 0.44 | 1.67 | 0.18 | 0.73 |
NMD39 | 9 | 0.66 | 17 | 70 | 7.85 | 17.74 | 1.50 | 5.30 | 1.04 | 0.45 | 1.02 | 0.18 | 1.12 |
NMD40 | 16 | 0.85 | 28 | 143 | 27.93 | 66.27 | 5.76 | 19.59 | 3.22 | 0.59 | 2.94 | 0.42 | 2.11 |
NMD41 | 20 | 2.26 | 34 | 184 | 34.70 | 75.31 | 7.57 | 25.97 | 4.42 | 0.82 | 3.94 | 0.58 | 3.01 |
样品编号 | Ho | Er | Tm | Yb | Lu | Y | 10000(Ga/ Al) | ∑REE | LREE/ HREE | (La/ Yb)N | (La/ Sm)N | (Gd/ Yb)N | δEu |
NMD34 | 0.32 | 0.99 | 0.17 | 1.18 | 0.19 | 9.34 | 2.87 | 85.80 | 11.96 | 11.60 | 6.13 | 1.33 | 0.94 |
NMD35 | 0.35 | 1.07 | 0.18 | 1.25 | 0.20 | 10.75 | 3.05 | 79.94 | 10.44 | 11.16 | 5.71 | 1.30 | 0.85 |
NMD36 | 0.59 | 1.79 | 0.29 | 2.01 | 0.32 | 17.10 | 3.00 | 153.04 | 11.68 | 9.56 | 4.32 | 1.46 | 0.56 |
NMD37 | 0.21 | 0.64 | 0.10 | 0.69 | 0.11 | 6.33 | 2.85 | 78.33 | 15.25 | 20.26 | 6.52 | 2.06 | 0.84 |
NMD38 | 0.14 | 0.44 | 0.07 | 0.47 | 0.08 | 4.16 | 2.46 | 98.07 | 24.94 | 39.39 | 8.86 | 2.94 | 0.74 |
NMD39 | 0.24 | 0.74 | 0.13 | 0.90 | 0.14 | 6.67 | 2.11 | 38.35 | 7.58 | 6.26 | 4.87 | 0.94 | 1.32 |
NMD40 | 0.41 | 1.23 | 0.19 | 1.30 | 0.19 | 12.28 | 2.74 | 132.15 | 14.03 | 15.41 | 5.60 | 1.87 | 0.58 |
NMD41 | 0.59 | 1.74 | 0.28 | 1.86 | 0.28 | 16.97 | 2.76 | 161.07 | 12.12 | 13.38 | 5.07 | 1.75 | 0.59 |
图8 卫境钾长花岗岩的微量元素原始地幔标准化蛛网图(原始地幔数据据文献[31])(a)和稀土元素球粒陨石标准化配分模式图(球粒陨石数据据文献[32])(b)
Fig.8 Primitive mantle-normalized multi-element spidergram (a) and chondrite-normalized REE pattern (b) for the Weijing moyite
样品编号 | Rb(10-6) | Sr(10-6) | 87Rb/86Sr | 87Sr/86Sr±1σ | Isr | Sm(10-6) | Nd(10-6) |
---|---|---|---|---|---|---|---|
NMD34 | 259 | 135.0 | 5.5648 | 0.716196±0.000014 | 0.70467 | 1.87 | 11.30 |
NMD37 | 229 | 140.0 | 4.7430 | 0.715070±0.000015 | 0.70525 | 2.32 | 14.80 |
NMD38 | 189 | 85.2 | 6.4136 | 0.718874±0.000010 | 0.70559 | 1.93 | 13.70 |
NMD39 | 175 | 63.0 | 8.0436 | 0.734466±0.000011 | 0.71781 | 1.04 | 5.22 |
NMD40 | 207 | 149.0 | 4.0181 | 0.713517±0.000012 | 0.70520 | 3.62 | 21.80 |
样品编号 | 147Sm/144Nd | 143Nd/144Nd±1σ | εNd(t) | TDM(Ga) | 206Pb/204Pb±1σ | 207Pb/204Pb±1σ | 208Pb/204Pb±1σ |
NMD34 | 0.0998 | 0.512547±0.000008 | 0 | 0.8 | 18.654±0.001 | 15.580±0.001 | 38.565±0.002 |
NMD37 | 0.0948 | 0.512594±0.000009 | 1.0 | 0.7 | 18.552±0.001 | 15.573±0.001 | 38.527±0.002 |
NMD38 | 0.0853 | 0.512515±0.000009 | -0.3 | 0.8 | 18.644±0.001 | 15.577±0.001 | 38.729±0.002 |
NMD39 | 0.1204 | 0.512505±0.000012 | -1.2 | 1.1 | 18.971±0.001 | 15.611±0.001 | 38.761±0.002 |
NMD40 | 0.1004 | 0.512565±0.000010 | 0.4 | 0.8 | 18.747±0.001 | 15.582±0.001 | 38.742±0.002 |
表4 卫境钾长花岗岩锆石Sr-Nd-Pb同位素组成
Table 4 Zircon Sr-Nd-Pb isotopic data of the Weijing moyite
样品编号 | Rb(10-6) | Sr(10-6) | 87Rb/86Sr | 87Sr/86Sr±1σ | Isr | Sm(10-6) | Nd(10-6) |
---|---|---|---|---|---|---|---|
NMD34 | 259 | 135.0 | 5.5648 | 0.716196±0.000014 | 0.70467 | 1.87 | 11.30 |
NMD37 | 229 | 140.0 | 4.7430 | 0.715070±0.000015 | 0.70525 | 2.32 | 14.80 |
NMD38 | 189 | 85.2 | 6.4136 | 0.718874±0.000010 | 0.70559 | 1.93 | 13.70 |
NMD39 | 175 | 63.0 | 8.0436 | 0.734466±0.000011 | 0.71781 | 1.04 | 5.22 |
NMD40 | 207 | 149.0 | 4.0181 | 0.713517±0.000012 | 0.70520 | 3.62 | 21.80 |
样品编号 | 147Sm/144Nd | 143Nd/144Nd±1σ | εNd(t) | TDM(Ga) | 206Pb/204Pb±1σ | 207Pb/204Pb±1σ | 208Pb/204Pb±1σ |
NMD34 | 0.0998 | 0.512547±0.000008 | 0 | 0.8 | 18.654±0.001 | 15.580±0.001 | 38.565±0.002 |
NMD37 | 0.0948 | 0.512594±0.000009 | 1.0 | 0.7 | 18.552±0.001 | 15.573±0.001 | 38.527±0.002 |
NMD38 | 0.0853 | 0.512515±0.000009 | -0.3 | 0.8 | 18.644±0.001 | 15.577±0.001 | 38.729±0.002 |
NMD39 | 0.1204 | 0.512505±0.000012 | -1.2 | 1.1 | 18.971±0.001 | 15.611±0.001 | 38.761±0.002 |
NMD40 | 0.1004 | 0.512565±0.000010 | 0.4 | 0.8 | 18.747±0.001 | 15.582±0.001 | 38.742±0.002 |
测点 | 年龄 (Ma) | 176Yb/177Hf | 176Lu/177Hf | 176Hf/177Hf±2σ | (176Hf/ 177Hf)t | εHf(0) | εHf(t)±1σ | TDM (Ga) | (Ga) | (Ga) | fLu/Hf |
---|---|---|---|---|---|---|---|---|---|---|---|
1 | 150 | 0.040681 | 0.000850 | 0.282875±0.000015 | 0.282873 | 3.64 | 6.85±0.531382 | 0.5 | 0.8 | 1.0 | -0.97 |
2 | 151 | 0.048192 | 0.001020 | 0.282882±0.000016 | 0.282880 | 3.90 | 7.12±0.574658 | 0.5 | 0.7 | 1.0 | -0.97 |
3 | 146 | 0.046674 | 0.000996 | 0.282864±0.000017 | 0.282861 | 3.24 | 6.35±0.585285 | 0.6 | 0.8 | 1.1 | -0.97 |
4 | 139 | 0.054542 | 0.001146 | 0.282918±0.000022 | 0.282915 | 5.18 | 8.12±0.786848 | 0.5 | 0.7 | 0.9 | -0.97 |
5 | 141 | 0.043925 | 0.000935 | 0.282892±0.000017 | 0.282890 | 4.25 | 7.26±0.610297 | 0.5 | 0.7 | 1.0 | -0.97 |
6 | 153 | 0.041276 | 0.000915 | 0.282867±0.000014 | 0.282865 | 3.37 | 6.63±0.495201 | 0.5 | 0.8 | 1.0 | -0.97 |
7 | 144 | 0.033799 | 0.000759 | 0.282864±0.000014 | 0.282862 | 3.25 | 6.33±0.495157 | 0.5 | 0.8 | 1.1 | -0.98 |
8 | 147 | 0.036875 | 0.000822 | 0.282831±0.000014 | 0.282829 | 2.10 | 5.25±0.507896 | 0.6 | 0.9 | 1.2 | -0.98 |
9 | 145 | 0.053808 | 0.001260 | 0.282838±0.000014 | 0.282834 | 2.32 | 5.38±0.500665 | 0.6 | 0.9 | 1.1 | -0.96 |
10 | 136 | 0.037200 | 0.000825 | 0.282891±0.000017 | 0.282889 | 4.20 | 7.11±0.613400 | 0.5 | 0.7 | 1.0 | -0.98 |
11 | 144 | 0.039660 | 0.000897 | 0.282881±0.000012 | 0.282879 | 3.86 | 6.94±0.424810 | 0.5 | 0.8 | 1.0 | -0.97 |
12 | 149 | 0.067365 | 0.001483 | 0.282925±0.000020 | 0.282921 | 5.41 | 8.53±0.702122 | 0.5 | 0.7 | 0.9 | -0.96 |
13 | 136 | 0.055280 | 0.001205 | 0.282864±0.000014 | 0.282861 | 3.26 | 6.13±0.485738 | 0.6 | 0.8 | 1.1 | -0.96 |
14 | 147 | 0.046979 | 0.000978 | 0.282869±0.000015 | 0.282866 | 3.41 | 6.54±0.543601 | 0.5 | 0.8 | 1.0 | -0.97 |
15 | 142 | 0.047522 | 0.000990 | 0.282851±0.000018 | 0.282848 | 2.79 | 5.81±0.634994 | 0.6 | 0.8 | 1.1 | -0.97 |
16 | 146 | 0.055938 | 0.001138 | 0.282896±0.000019 | 0.282892 | 4.37 | 7.46±0.675875 | 0.5 | 0.7 | 1.0 | -0.97 |
17 | 146 | 0.044908 | 0.001246 | 0.282884±0.000015 | 0.282881 | 3.97 | 7.05±0.527123 | 0.5 | 0.7 | 1.0 | -0.96 |
18 | 146 | 0.046268 | 0.001052 | 0.282897±0.000019 | 0.282895 | 4.44 | 7.54±0.658308 | 0.5 | 0.7 | 1.0 | -0.97 |
19 | 143 | 0.036141 | 0.000792 | 0.282845±0.000016 | 0.282843 | 2.58 | 5.64±0.564761 | 0.6 | 0.8 | 1.1 | -0.98 |
表5 卫境钾长花岗岩(NMD33)LA-ICP-MS锆石Hf同位素分析结果
Table 5 LA-ICP-MS zircon Hf isotopic data of the Weijing moyite (sample NMD33)
测点 | 年龄 (Ma) | 176Yb/177Hf | 176Lu/177Hf | 176Hf/177Hf±2σ | (176Hf/ 177Hf)t | εHf(0) | εHf(t)±1σ | TDM (Ga) | (Ga) | (Ga) | fLu/Hf |
---|---|---|---|---|---|---|---|---|---|---|---|
1 | 150 | 0.040681 | 0.000850 | 0.282875±0.000015 | 0.282873 | 3.64 | 6.85±0.531382 | 0.5 | 0.8 | 1.0 | -0.97 |
2 | 151 | 0.048192 | 0.001020 | 0.282882±0.000016 | 0.282880 | 3.90 | 7.12±0.574658 | 0.5 | 0.7 | 1.0 | -0.97 |
3 | 146 | 0.046674 | 0.000996 | 0.282864±0.000017 | 0.282861 | 3.24 | 6.35±0.585285 | 0.6 | 0.8 | 1.1 | -0.97 |
4 | 139 | 0.054542 | 0.001146 | 0.282918±0.000022 | 0.282915 | 5.18 | 8.12±0.786848 | 0.5 | 0.7 | 0.9 | -0.97 |
5 | 141 | 0.043925 | 0.000935 | 0.282892±0.000017 | 0.282890 | 4.25 | 7.26±0.610297 | 0.5 | 0.7 | 1.0 | -0.97 |
6 | 153 | 0.041276 | 0.000915 | 0.282867±0.000014 | 0.282865 | 3.37 | 6.63±0.495201 | 0.5 | 0.8 | 1.0 | -0.97 |
7 | 144 | 0.033799 | 0.000759 | 0.282864±0.000014 | 0.282862 | 3.25 | 6.33±0.495157 | 0.5 | 0.8 | 1.1 | -0.98 |
8 | 147 | 0.036875 | 0.000822 | 0.282831±0.000014 | 0.282829 | 2.10 | 5.25±0.507896 | 0.6 | 0.9 | 1.2 | -0.98 |
9 | 145 | 0.053808 | 0.001260 | 0.282838±0.000014 | 0.282834 | 2.32 | 5.38±0.500665 | 0.6 | 0.9 | 1.1 | -0.96 |
10 | 136 | 0.037200 | 0.000825 | 0.282891±0.000017 | 0.282889 | 4.20 | 7.11±0.613400 | 0.5 | 0.7 | 1.0 | -0.98 |
11 | 144 | 0.039660 | 0.000897 | 0.282881±0.000012 | 0.282879 | 3.86 | 6.94±0.424810 | 0.5 | 0.8 | 1.0 | -0.97 |
12 | 149 | 0.067365 | 0.001483 | 0.282925±0.000020 | 0.282921 | 5.41 | 8.53±0.702122 | 0.5 | 0.7 | 0.9 | -0.96 |
13 | 136 | 0.055280 | 0.001205 | 0.282864±0.000014 | 0.282861 | 3.26 | 6.13±0.485738 | 0.6 | 0.8 | 1.1 | -0.96 |
14 | 147 | 0.046979 | 0.000978 | 0.282869±0.000015 | 0.282866 | 3.41 | 6.54±0.543601 | 0.5 | 0.8 | 1.0 | -0.97 |
15 | 142 | 0.047522 | 0.000990 | 0.282851±0.000018 | 0.282848 | 2.79 | 5.81±0.634994 | 0.6 | 0.8 | 1.1 | -0.97 |
16 | 146 | 0.055938 | 0.001138 | 0.282896±0.000019 | 0.282892 | 4.37 | 7.46±0.675875 | 0.5 | 0.7 | 1.0 | -0.97 |
17 | 146 | 0.044908 | 0.001246 | 0.282884±0.000015 | 0.282881 | 3.97 | 7.05±0.527123 | 0.5 | 0.7 | 1.0 | -0.96 |
18 | 146 | 0.046268 | 0.001052 | 0.282897±0.000019 | 0.282895 | 4.44 | 7.54±0.658308 | 0.5 | 0.7 | 1.0 | -0.97 |
19 | 143 | 0.036141 | 0.000792 | 0.282845±0.000016 | 0.282843 | 2.58 | 5.64±0.564761 | 0.6 | 0.8 | 1.1 | -0.98 |
图9 白垩纪卫境钾长花岗岩中锆石Hf同位素组成(a)和锆石的Hf单阶段模式年龄直方图(b)
Fig.9 Zircon Hf isotopic composition histogram (a) and Hf single-stage model age histogram (b)for the Cretaceous Weijing moyite
图10 卫境钾长花岗岩主量元素A型花岗岩判别图(底图据Whalen等[28]和赵振华等[33]) A. A型花岗岩; M. M型花岗岩; I. I型花岗岩; S. S型花岗岩
Fig.10 Major element A-type granite discrimination plots for the Weijing moyite
图11 卫境钾长花岗岩微量元素A型花岗岩判别图(底图据Whalen等[28]和赵振华等[33]) A. A型花岗岩; M. M型花岗岩; I. I型花岗岩; S. S型花岗岩
Fig.11 Trace element A-type granite discrimination plots for the Weijing moyite
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