Petrogenesis of the Early Cretaceous Zhouguan Granodiorite in Jiaodong Peninsula: Evidence from Mineralogy, Geochemistry, Geochronology, and Sr-Nd Isotopes
Abstract
:1. Introduction
2. Regional Geology
3. Samples and Analytical Methods
3.1. Geochemical Analysis
3.2. Zircon U-Pb Dating
3.3. EPMA Analysis of Biotite and Amphibole
3.4. Sr-Nd Isotopes
4. Results
4.1. Characteristics of Whole-Rock Major and Trace Elements of Zhouguan Granodiorite
4.2. Zircon U-Pb Age
4.3. Biotite Analysis Results
4.4. Amphibole Analysis Results
4.5. Whole-Rock Sr-Nd Isotopes
5. Discussion
5.1. Age of Zhouguan Granodiorite
5.2. Geochemical Features and Petrogenesis
5.3. Significance of Amphibole and Biotite to Mineralization
5.4. Analysis of Petrogenetic Tectonic Environment in Relation to Metallogenic Model
6. Conclusions
- (1)
- Through LA-MC-ICP-MS zircon U-Pb dating, the emplacement age of the Zhouguan granodiorite is determined as 115 Ma ± 0.77 Ma, indicating that the granodiorite occurred in the late of the Early Cretaceous.
- (2)
- According to the petro-geochemical analysis, the Zhouguan granodiorite belongs to a high-K calc-alkaline series, metaluminous to weakly peraluminous granite, i.e., a typical crust–mantle mixed granitoids formed in a continental arc environment.
- (3)
- According to an EPMA analysis of biotite and amphibole, the parent magma, which formed the Zhouguan granodiorite, is highly oxidized and hydrous, which is favorable for mineralization.
- (4)
- Based on predecessors’ research, and considering the development of short displacement cut-crust strike-slip faults and the trans-crustal magmatic system in the Jiaodong area, the petrogenesis of the formation model of the Zhouguan granodiorite in the area is proposed in this study.
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Liths | Granodiorite | Granite Porphyry | Guojialing Granite | Linglong Granite | Adakite | TTG | High Sr-Ba Granite | ||||
---|---|---|---|---|---|---|---|---|---|---|---|
Number | ZG0721-b1 | ZG0721-b3 | ZG0721-b5 | ZG0721-b8 | ZG0721-b10 | GJL-1 | LL-1 | AI-1 [48] | TTG-1 [48] | TTG-2 [48] | Sr-1 [48] |
SiO2 | 68.09 | 68.72 | 68.07 | 68.24 | 73 | 72.26 | 72.74 | 63.89 | 70.2 | 68.53 | 71.14 |
Al2O3 | 15.22 | 15.82 | 15.78 | 16.07 | 14.23 | 14.46 | 12.32 | 17.4 | 15.74 | 15.91 | 15.06 |
Fe2O3 | 2.48 | 2.57 | 2.67 | 2.53 | 1.52 | 1.67 | 1.05 | 4.68 | 2.84 | 2.49 | 1.02 |
K2O | 3.77 | 3.05 | 3.08 | 3.16 | 4.34 | 4.29 | 4.96 | 1.52 | 1.88 | 1.56 | 4.22 |
Na2O | 4.11 | 4.18 | 4.16 | 4.23 | 3.88 | 3.9 | 4.83 | 4.09 | 4.87 | 5.57 | 4.35 |
CaO | 2.73 | 2.96 | 2.65 | 2.99 | 1.51 | 1.63 | 2.03 | 5.23 | 3.17 | 3.36 | 1.46 |
MgO | 1.36 | 1.39 | 1.32 | 1.21 | 0.66 | 0.28 | 0.39 | 2.2 | 1.09 | 1.41 | 0.26 |
TiO2 | 0.33 | 0.37 | 0.38 | 0.4 | 0.2 | - | - | - | - | - | - |
MnO | 0.043 | 0.042 | 0.04 | 0.034 | 0.022 | - | 0.2 | 0.08 | 0.04 | 0.04 | 0.01 |
P2O5 | 0.16 | 0.15 | 0.13 | 0.15 | 0.09 | 0.04 | 0.06 | 0.19 | 0.12 | 0.11 | 0.06 |
LOI | 1.42 | 0.89 | 1.92 | 0.82 | 0.68 | 0.48 | 0.81 | - | - | - | - |
Total | 99.713 | 100.142 | 100.2 | 99.834 | 100.132 | 99.01 | 99.39 | 99.28 | 99.95 | 98.98 | 97.58 |
Contents of Au element (ppb) of Zhouguan granodiorite | |||||||||||
Au | ˂0.5 | 0.8 | ˂0.5 | ˂0.5 | ˂0.5 | - | - | - | - | - | - |
No. | ZG0721-b1 | ZG0721-b3 | ZG0721-b5 | ZG0721-b8 | ZG0721-b10 | No. | ZG0721-b1 | ZG0721-b3 | ZG0721-b5 | ZG0721-b8 | ZG0721-b10 |
---|---|---|---|---|---|---|---|---|---|---|---|
Liths | Granodiorite | Granite Porphyry | Liths | Granodiorite | Granite Porphyry | ||||||
Rb | 86.6 | 66.4 | 65.5 | 61.1 | 104 | Ce | 68.5 | 56.9 | 54.5 | 70 | 56.6 |
K | 31,296.61 | 25,319.54 | 25,568.58 | 26,232.70 | 36,028.46 | Pr | 9.09 | 7.4 | 7.13 | 9.14 | 7.09 |
Ba | 2091 | 1941 | 2052 | 2116 | 1458 | Nd | 31.8 | 26.4 | 25.8 | 32.5 | 24.1 |
Th | 14.5 | 9.91 | 9.37 | 12 | 18.9 | Sm | 4.77 | 4.08 | 3.94 | 4.81 | 3.57 |
U | 2.15 | 1.34 | 1.46 | 1.7 | 2.13 | Eu | 1.08 | 0.95 | 0.91 | 1.13 | 0.75 |
Nb | 7.8 | 6.13 | 5.78 | 6.75 | 8.64 | Gd | 4.08 | 3.57 | 3.54 | 4.12 | 3.14 |
La | 51 | 40.1 | 38.2 | 50 | 40.9 | Tb | 0.45 | 0.38 | 0.38 | 0.42 | 0.35 |
Ce | 68.5 | 56.9 | 54.5 | 70 | 56.6 | Dy | 1.84 | 1.57 | 1.55 | 1.65 | 1.47 |
Sr | 900 | 953 | 928 | 1042 | 531 | Ho | 0.34 | 0.29 | 0.29 | 0.29 | 0.28 |
Nd | 31.8 | 26.4 | 25.8 | 32.5 | 24.1 | Er | 0.94 | 0.78 | 0.78 | 0.78 | 0.81 |
P | 698.21 | 654.57 | 567.29 | 654.57 | 392.74 | Tm | 0.13 | 0.1 | 0.11 | 0.099 | 0.12 |
Zr | 154 | 133 | 136 | 148 | 115 | ΣREE | 175.12 | 143.34 | 138.01 | 175.72 | 140.22 |
Hf | 4.31 | 3.79 | 4.09 | 4.38 | 3.73 | LREE | 166.24 | 135.83 | 130.48 | 167.58 | 133.01 |
Sn | 0.65 | 0.64 | 0.73 | 0.52 | 0.6 | HREE | 8.88 | 7.51 | 7.53 | 8.139 | 7.21 |
Ti | 1589 | 1742 | 1765 | 1930 | 939 | LREE/ HREE | 18.72 | 18.08 | 17.32 | 20.58 | 18.44 |
Y | 9.98 | 8.13 | 7.69 | 7.78 | 8.5 | LaN/YbN | 38.51 | 40.51 | 36.05 | 53.52 | 32.96 |
Yb | 0.95 | 0.71 | 0.76 | 0.67 | 0.89 | δEu | 0.75 | 0.76 | 0.74 | 0.77 | 0.68 |
Lu | 0.15 | 0.11 | 0.12 | 0.11 | 0.15 | δCe | 0.78 | 0.81 | 0.81 | 0.81 | 0.81 |
La | 51 | 40.1 | 38.2 | 50 | 40.9 |
No. | Pb | Th | U | Th/U | 207Pb/235U | 206Pb/238U | 207Pb/235U | 206Pb/238U | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
10−6 | 10−6 | 10−6 | Ratio | Error | Ratio | Error | Age/Ma | Error | Age/Ma | Error | ||
B8-1 | 62.93 | 347.59 | 378.88 | 0.92 | 0.1192 | 0.0011 | 0.0180 | 0.0001 | 114 | 1.0 | 115 | 0.5 |
B8-2 | 44.96 | 73.82 | 155.15 | 0.48 | 0.1321 | 0.0029 | 0.0184 | 0.0001 | 126 | 2.6 | 117 | 0.9 |
B8-3 | 37.75 | 29.45 | 176.80 | 0.17 | 0.1185 | 0.0016 | 0.0178 | 0.0001 | 114 | 1.4 | 114 | 0.7 |
B8-4 | 1046.01 | 176.06 | 243.82 | 0.72 | 25.2427 | 0.2491 | 0.6471 | 0.0050 | 3318 | 9.9 | 3217 | 19.7 |
B8-5 | 31.27 | 129.25 | 121.52 | 1.06 | 0.1610 | 0.0032 | 0.0200 | 0.0001 | 152 | 2.8 | 127 | 0.7 |
B8-6 | 22.26 | 100.70 | 127.15 | 0.79 | 0.1201 | 0.0018 | 0.0183 | 0.0001 | 115 | 1.7 | 117 | 0.6 |
B8-7 | 23.85 | 107.41 | 147.50 | 0.73 | 0.1297 | 0.0018 | 0.0197 | 0.0001 | 124 | 1.6 | 125 | 0.7 |
B8-8 | 22.37 | 94.06 | 119.58 | 0.79 | 0.1319 | 0.0020 | 0.0196 | 0.0001 | 126 | 1.8 | 125 | 0.7 |
B8-9 | 40.34 | 206.52 | 180.14 | 1.15 | 0.1253 | 0.0016 | 0.0187 | 0.0001 | 120 | 1.5 | 119 | 0.6 |
B8-10 | 77.78 | 371.35 | 778.64 | 0.48 | 0.1201 | 0.0011 | 0.0177 | 0.0001 | 115 | 1.0 | 113 | 0.7 |
B8-11 | 240.50 | 23.14 | 661.91 | 0.03 | 5.4479 | 0.0313 | 0.3428 | 0.0018 | 1892 | 5.1 | 1900 | 8.7 |
B8-12 | 29.81 | 155.85 | 163.41 | 0.95 | 0.1226 | 0.0015 | 0.0184 | 0.0001 | 117 | 1.3 | 118 | 0.6 |
B8-13 | 18.42 | 67.82 | 55.38 | 1.22 | 0.1630 | 0.0039 | 0.0248 | 0.0002 | 153 | 3.4 | 158 | 1.3 |
B8-14 | 47.66 | 229.04 | 279.48 | 0.82 | 0.1367 | 0.0014 | 0.0204 | 0.0001 | 130 | 1.3 | 130 | 0.7 |
B8-15 | 26.13 | 85.98 | 282.75 | 0.30 | 0.1607 | 0.0016 | 0.0236 | 0.0001 | 151 | 1.4 | 151 | 0.8 |
B8-16 | 921.68 | 201.31 | 322.03 | 0.63 | 12.7009 | 0.0766 | 0.4862 | 0.0024 | 2658 | 6.0 | 2554 | 10.7 |
B8-17 | 15.20 | 66.86 | 64.35 | 1.04 | 0.1217 | 0.0030 | 0.0181 | 0.0001 | 117 | 2.7 | 115 | 0.9 |
B8-18 | 81.13 | 451.50 | 320.42 | 1.41 | 0.1226 | 0.0013 | 0.0182 | 0.0001 | 117 | 1.2 | 116 | 0.6 |
B8-19 | 83.12 | 395.23 | 414.09 | 0.95 | 0.1359 | 0.0013 | 0.0200 | 0.0001 | 129 | 1.1 | 128 | 0.7 |
B8-20 | 30.66 | 149.85 | 169.12 | 0.89 | 0.1229 | 0.0019 | 0.0183 | 0.0001 | 118 | 1.7 | 117 | 0.7 |
Oxide | Samples | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
H-1 | H-2 | H-3 | H-4 | H-5 | H-6 | H-7 | H-8 | H-9 | H-10 | H-11 | H-12 | H-13 | H-14 | H-15 | |
SiO2 | 34.767 | 34.248 | 35.282 | 34.889 | 34.922 | 35.412 | 34.96 | 34.783 | 35.45 | 35.3 | 35.635 | 34.879 | 35.599 | 34.857 | 35.692 |
TiO2 | 4.133 | 4.396 | 4.663 | 2.852 | 4.071 | 3.571 | 4.172 | 3.444 | 4.161 | 3.881 | 4.18 | 4.555 | 4.391 | 4.506 | 3.573 |
Al2O3 | 13.949 | 14.206 | 13.621 | 15.02 | 14.174 | 13.704 | 13.882 | 15.126 | 13.787 | 14.608 | 13.826 | 13.905 | 13.957 | 14.005 | 14.145 |
FeO | 20.764 | 20.918 | 20.884 | 21.805 | 20.742 | 21.368 | 20.709 | 21.39 | 20.756 | 20.244 | 20.245 | 21.652 | 20.262 | 21.51 | 20.392 |
MnO | 0.261 | 0.328 | 0.309 | 0.286 | 0.37 | 0.289 | 0.294 | 0.313 | 0.321 | 0.266 | 0.32 | 0.334 | 0.273 | 0.381 | 0.311 |
MgO | 10.217 | 9.943 | 10.328 | 10.811 | 10.172 | 11.137 | 10.36 | 11.505 | 10.556 | 10.619 | 10.742 | 9.868 | 10.546 | 9.833 | 11.189 |
CaO | 0.174 | 0.051 | 0.014 | 0.066 | 0.071 | 0.017 | 0.164 | 0.641 | 0.258 | 0.025 | 0.126 | 0.221 | 0.049 | 0.046 | 0.065 |
Na2O | 0.146 | 0.225 | 0.194 | 0.159 | 0.104 | 0.096 | 0.333 | 0.169 | 0.121 | 0.061 | 0.283 | 0.119 | 0.203 | 0.21 | 0.05 |
K2O | 9.147 | 9.453 | 8.685 | 8.106 | 9.404 | 8.547 | 9.232 | 6.838 | 8.759 | 9.249 | 8.961 | 8.788 | 9.037 | 8.941 | 8.881 |
Si | 2.7436 | 2.7079 | 2.7618 | 2.7293 | 2.7434 | 2.7684 | 2.7441 | 2.6943 | 2.7679 | 2.7493 | 2.7733 | 2.7356 | 2.7696 | 2.7353 | 2.7737 |
AlIV | 1.2564 | 1.2921 | 1.2382 | 1.2707 | 1.2566 | 1.2316 | 1.2559 | 1.3057 | 1.2321 | 1.2507 | 1.2267 | 1.2644 | 1.2304 | 1.2647 | 1.2263 |
AlVI | 0.0409 | 0.0317 | 0.0184 | 0.1142 | 0.0556 | 0.0311 | 0.0284 | 0.0753 | 0.0366 | 0.0902 | 0.0414 | 0.0209 | 0.0493 | 0.0305 | 0.0693 |
Ti | 0.2454 | 0.2615 | 0.2746 | 0.1678 | 0.2406 | 0.2100 | 0.2464 | 0.2007 | 0.2444 | 0.2274 | 0.2447 | 0.2688 | 0.2570 | 0.2660 | 0.2089 |
Fe3+ | 0.1660 | 0.1373 | 0.2163 | 0.1731 | 0.1610 | 0.1763 | 0.1451 | 0.2349 | 0.2013 | 0.1831 | 0.1859 | 0.1983 | 0.2027 | 0.1854 | 0.1864 |
Fe2+ | 1.2043 | 1.2459 | 1.1508 | 1.2535 | 1.2018 | 1.2208 | 1.2144 | 1.1507 | 1.1540 | 1.1355 | 1.1318 | 1.2219 | 1.1157 | 1.2262 | 1.1389 |
Mn | 0.0174 | 0.0220 | 0.0205 | 0.0190 | 0.0246 | 0.0191 | 0.0195 | 0.0205 | 0.0212 | 0.0175 | 0.0211 | 0.0222 | 0.0180 | 0.0253 | 0.0205 |
Mg | 1.2019 | 1.1720 | 1.2052 | 1.2608 | 1.1912 | 1.2980 | 1.2123 | 1.3286 | 1.2287 | 1.2329 | 1.2463 | 1.1538 | 1.2231 | 1.1503 | 1.2963 |
Ca | 0.0147 | 0.0043 | 0.0012 | 0.0055 | 0.0060 | 0.0014 | 0.0138 | 0.0532 | 0.0216 | 0.0021 | 0.0105 | 0.0186 | 0.0041 | 0.0039 | 0.0054 |
Na | 0.0223 | 0.0345 | 0.0294 | 0.0241 | 0.0158 | 0.0146 | 0.0507 | 0.0254 | 0.0183 | 0.0092 | 0.0427 | 0.0181 | 0.0306 | 0.0320 | 0.0075 |
K | 0.9209 | 0.9535 | 0.8673 | 0.8090 | 0.9424 | 0.8524 | 0.9245 | 0.6757 | 0.8725 | 0.9190 | 0.8897 | 0.8793 | 0.8969 | 0.8951 | 0.8805 |
Total | 7.8340 | 7.8627 | 7.7837 | 7.8269 | 7.8390 | 7.8237 | 7.8549 | 7.7651 | 7.7987 | 7.8169 | 7.8141 | 7.8017 | 7.7973 | 7.8146 | 7.8136 |
OH− | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 |
MF | 0.4641 | 0.4548 | 0.4648 | 0.4659 | 0.4620 | 0.4782 | 0.4678 | 0.4858 | 0.4716 | 0.4799 | 0.4821 | 0.4444 | 0.4779 | 0.4446 | 0.4906 |
AlVI + Fe3+ + Ti | 0.4523 | 0.4305 | 0.5093 | 0.4551 | 0.4572 | 0.4174 | 0.4198 | 0.5109 | 0.4824 | 0.5007 | 0.4721 | 0.4879 | 0.5089 | 0.4819 | 0.4645 |
Fe2+ + Mn | 1.2218 | 1.2679 | 1.1713 | 1.2725 | 1.2264 | 1.2399 | 1.2339 | 1.1713 | 1.1753 | 1.1531 | 1.1528 | 1.2441 | 1.1337 | 1.2516 | 1.1594 |
Ti/(Mg + Fe + Ti + Mn) | 0.0865 | 0.0921 | 0.0958 | 0.0584 | 0.0853 | 0.0718 | 0.0868 | 0.0684 | 0.0858 | 0.0813 | 0.0865 | 0.0938 | 0.0913 | 0.0932 | 0.0733 |
Al/(Al + Mg + Fe + Ti + Mn + Si) | 0.1883 | 0.1926 | 0.1825 | 0.1980 | 0.1907 | 0.1815 | 0.1867 | 0.1955 | 0.1837 | 0.1946 | 0.1843 | 0.1862 | 0.1863 | 0.1881 | 0.1871 |
Oxide | Samples | ||||||||||||||
H-16 | H-17 | H-18 | H-19 | H-20 | H-21 | H-22 | H-23 | H-24 | H-25 | H-26 | H-27 | H-28 | H-29 | H-30 | |
SiO2 | 35.128 | 36.675 | 36.23 | 35.187 | 35.242 | 35.758 | 35.362 | 36.126 | 35.67 | 35.042 | 35.502 | 35.482 | 35.629 | 35.308 | 35.188 |
TiO2 | 4.398 | 3.539 | 3.077 | 4.027 | 4.395 | 4.032 | 3.381 | 4.355 | 4.344 | 4.63 | 4.369 | 4.355 | 4.22 | 4.116 | 4.738 |
Al2O3 | 14.032 | 13.498 | 13.091 | 14.349 | 14.139 | 13.338 | 14.873 | 13.669 | 14.463 | 14.079 | 13.86 | 14.279 | 14.129 | 14.678 | 14.189 |
FeO | 21.127 | 19.473 | 20.494 | 20.651 | 21.249 | 21.205 | 21.19 | 20.596 | 20.686 | 21.042 | 21.232 | 20.856 | 20.73 | 20.857 | 20.736 |
MnO | 0.252 | 0.297 | 0.324 | 0.3 | 0.275 | 0.286 | 0.336 | 0.298 | 0.261 | 0.363 | 0.251 | 0.321 | 0.327 | 0.292 | 0.258 |
MgO | 9.865 | 11.635 | 11.465 | 10.701 | 10.232 | 10.739 | 10.533 | 10.69 | 10.188 | 10.058 | 10.302 | 10.249 | 10.736 | 10.121 | 10.365 |
CaO | 0.031 | 0.329 | 0.188 | 0.12 | 0.017 | 0 | 0.092 | 0 | 0.076 | 0.098 | 0.078 | 0.02 | 0.086 | 0.003 | 0 |
Na2O | 0.077 | 0.117 | 0.41 | 0.107 | 0.096 | 0.222 | 0.091 | 0.126 | 0.095 | 0.531 | 0.186 | 0.113 | 0.077 | 0.116 | 0.088 |
K2O | 9.509 | 8.872 | 9.25 | 9.087 | 9.01 | 9.152 | 8.927 | 8.876 | 9.02 | 9.032 | 9.026 | 9.229 | 8.967 | 9.446 | 9.435 |
Si | 2.7514 | 2.8302 | 2.8217 | 2.7391 | 2.7453 | 2.7857 | 2.7452 | 2.7952 | 2.7616 | 2.7295 | 2.7613 | 2.7531 | 2.7582 | 2.7414 | 2.7315 |
AlIV | 1.2486 | 1.1698 | 1.1783 | 1.2609 | 1.2547 | 1.2143 | 1.2548 | 1.2048 | 1.2384 | 1.2705 | 1.2387 | 1.2469 | 1.2418 | 1.2586 | 1.2685 |
AlVI | 0.0467 | 0.0578 | 0.0233 | 0.0556 | 0.0434 | 0.0103 | 0.1060 | 0.0417 | 0.0813 | 0.0220 | 0.0318 | 0.0588 | 0.0474 | 0.0845 | 0.0296 |
Ti | 0.2592 | 0.2055 | 0.1803 | 0.2358 | 0.2576 | 0.2363 | 0.1975 | 0.2535 | 0.2530 | 0.2713 | 0.2556 | 0.2542 | 0.2458 | 0.2404 | 0.2767 |
Fe3+ | 0.1773 | 0.2040 | 0.1123 | 0.1739 | 0.1970 | 0.1627 | 0.1742 | 0.2244 | 0.2219 | 0.1582 | 0.1903 | 0.1949 | 0.2000 | 0.1768 | 0.1835 |
Fe2+ | 1.2066 | 1.0528 | 1.2225 | 1.1705 | 1.1873 | 1.2188 | 1.2016 | 1.1083 | 1.1175 | 1.2125 | 1.1907 | 1.1585 | 1.1421 | 1.1775 | 1.1627 |
Mn | 0.0167 | 0.0194 | 0.0214 | 0.0198 | 0.0181 | 0.0189 | 0.0221 | 0.0195 | 0.0171 | 0.0239 | 0.0165 | 0.0211 | 0.0214 | 0.0192 | 0.0170 |
Mg | 1.1519 | 1.3385 | 1.3311 | 1.2418 | 1.1882 | 1.2472 | 1.2190 | 1.2331 | 1.1759 | 1.1679 | 1.1945 | 1.1855 | 1.2390 | 1.1715 | 1.1995 |
Ca | 0.0026 | 0.0272 | 0.0157 | 0.0100 | 0.0014 | 0.0000 | 0.0077 | 0.0000 | 0.0063 | 0.0082 | 0.0065 | 0.0017 | 0.0071 | 0.0002 | 0.0000 |
Na | 0.0117 | 0.0175 | 0.0619 | 0.0161 | 0.0145 | 0.0335 | 0.0137 | 0.0189 | 0.0143 | 0.0802 | 0.0280 | 0.0170 | 0.0116 | 0.0175 | 0.0132 |
K | 0.9501 | 0.8734 | 0.9191 | 0.9024 | 0.8954 | 0.9096 | 0.8841 | 0.8761 | 0.8909 | 0.8975 | 0.8956 | 0.9135 | 0.8856 | 0.9356 | 0.9343 |
Total | 7.8227 | 7.7960 | 7.8877 | 7.8261 | 7.8030 | 7.8373 | 7.8258 | 7.7756 | 7.7781 | 7.8418 | 7.8097 | 7.8051 | 7.8000 | 7.8232 | 7.8165 |
OH− | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 |
MF | 0.4513 | 0.5119 | 0.4953 | 0.4765 | 0.4587 | 0.4711 | 0.4658 | 0.4769 | 0.4643 | 0.4558 | 0.4608 | 0.4631 | 0.4761 | 0.4603 | 0.4681 |
AlVI + Fe3+ + Ti | 0.4831 | 0.4672 | 0.3160 | 0.4654 | 0.4980 | 0.4093 | 0.4777 | 0.5196 | 0.5562 | 0.4515 | 0.4778 | 0.5079 | 0.4931 | 0.5017 | 0.4898 |
Fe2+ + Mn | 1.2234 | 1.0722 | 1.2439 | 1.1903 | 1.2055 | 1.2377 | 1.2237 | 1.1278 | 1.1346 | 1.2365 | 1.2073 | 1.1796 | 1.1636 | 1.1967 | 1.1797 |
Ti/(Mg + Fe + Ti + Mn) | 0.0922 | 0.0729 | 0.0629 | 0.0830 | 0.0904 | 0.0819 | 0.0702 | 0.0893 | 0.0908 | 0.0957 | 0.0898 | 0.0903 | 0.0863 | 0.0863 | 0.0975 |
Al/(Al + Mg + Fe + Ti + Mn + Si) | 0.1888 | 0.1778 | 0.1740 | 0.1906 | 0.1883 | 0.1776 | 0.1964 | 0.1812 | 0.1920 | 0.1883 | 0.1845 | 0.1899 | 0.1868 | 0.1955 | 0.1890 |
Oxide | Samples | ||||||||||||||
H-31 | H-32 | H-33 | H-34 | H-35 | H-36 | H-37 | H-38 | H-39 | H-40 | H-41 | H-42 | H-43 | H-44 | ||
SiO2 | 35.381 | 35.458 | 35.266 | 35.649 | 36.541 | 35.565 | 36.081 | 36.435 | 36.727 | 35.316 | 35.079 | 35.683 | 36.72 | 35.997 | |
TiO2 | 3.777 | 4.298 | 4.708 | 4.29 | 3.497 | 3.92 | 4.171 | 3.632 | 3.565 | 3.565 | 4.056 | 4.177 | 3.786 | 4.338 | |
Al2O3 | 14.344 | 14.314 | 14.231 | 13.896 | 13.78 | 14.776 | 13.865 | 13.937 | 13.786 | 14.968 | 15.249 | 14.356 | 13.993 | 14.503 | |
FeO | 21.012 | 21.358 | 21.497 | 20.558 | 20.736 | 20.838 | 20.264 | 20.391 | 20.42 | 21.318 | 21.368 | 20.76 | 20.155 | 20.641 | |
MnO | 0.283 | 0.351 | 0.294 | 0.283 | 0.283 | 0.243 | 0.251 | 0.27 | 0.371 | 0.332 | 0.309 | 0.256 | 0.286 | 0.243 | |
MgO | 10.772 | 10.246 | 9.797 | 10.812 | 11.026 | 10.357 | 10.998 | 11.063 | 10.993 | 10.393 | 9.981 | 10.608 | 11.27 | 10.382 | |
CaO | 0.08 | 0.164 | 0.034 | 0.128 | 0.08 | 0.032 | 0.014 | 0.166 | 0.092 | 0.114 | 0.011 | 0 | 0.119 | 0 | |
Na2O | 0.082 | 0.103 | 0.178 | 0.141 | 0.128 | 0.132 | 0.115 | 0.127 | 0.084 | 0.163 | 0.125 | 0.118 | 0.135 | 0.09 | |
K2O | 9.372 | 8.816 | 9.124 | 9.383 | 9.07 | 9.317 | 9.36 | 9.187 | 9.293 | 9.082 | 9.186 | 9.367 | 8.946 | 9.311 | |
Si | 2.7443 | 2.7463 | 2.7389 | 2.7590 | 2.8164 | 2.7487 | 2.7832 | 2.8045 | 2.8236 | 2.7332 | 2.7131 | 2.7542 | 2.8101 | 2.7664 | |
AlIV | 1.2557 | 1.2537 | 1.2611 | 1.2410 | 1.1836 | 1.2513 | 1.2168 | 1.1955 | 1.1764 | 1.2668 | 1.2869 | 1.2458 | 1.1899 | 1.2336 | |
AlVI | 0.0556 | 0.0530 | 0.0415 | 0.0266 | 0.0681 | 0.0946 | 0.0437 | 0.0688 | 0.0728 | 0.0984 | 0.1032 | 0.0602 | 0.0722 | 0.0801 | |
Ti | 0.2204 | 0.2504 | 0.2751 | 0.2498 | 0.2028 | 0.2279 | 0.2421 | 0.2103 | 0.2062 | 0.2076 | 0.2360 | 0.2426 | 0.2180 | 0.2508 | |
Fe3+ | 0.1505 | 0.2068 | 0.1999 | 0.1688 | 0.1896 | 0.1804 | 0.1864 | 0.1864 | 0.1924 | 0.1628 | 0.1816 | 0.1798 | 0.2124 | 0.2109 | |
Fe2+ | 1.2125 | 1.1766 | 1.1964 | 1.1618 | 1.1471 | 1.1665 | 1.1209 | 1.1262 | 1.1205 | 1.2170 | 1.2006 | 1.1603 | 1.0775 | 1.1157 | |
Mn | 0.0186 | 0.0230 | 0.0193 | 0.0186 | 0.0185 | 0.0159 | 0.0164 | 0.0176 | 0.0242 | 0.0218 | 0.0202 | 0.0167 | 0.0185 | 0.0158 | |
Mg | 1.2456 | 1.1831 | 1.1343 | 1.2475 | 1.2669 | 1.1933 | 1.2647 | 1.2694 | 1.2599 | 1.1991 | 1.1508 | 1.2206 | 1.2857 | 1.1894 | |
Ca | 0.0066 | 0.0136 | 0.0028 | 0.0106 | 0.0066 | 0.0026 | 0.0012 | 0.0137 | 0.0076 | 0.0095 | 0.0009 | 0.0000 | 0.0098 | 0.0000 | |
Na | 0.0123 | 0.0155 | 0.0268 | 0.0212 | 0.0191 | 0.0198 | 0.0172 | 0.0190 | 0.0125 | 0.0245 | 0.0187 | 0.0177 | 0.0200 | 0.0134 | |
K | 0.9274 | 0.8711 | 0.9040 | 0.9264 | 0.8918 | 0.9186 | 0.9211 | 0.9021 | 0.9115 | 0.8967 | 0.9064 | 0.9224 | 0.8734 | 0.9129 | |
Total | 7.8495 | 7.7932 | 7.8001 | 7.8312 | 7.8104 | 7.8196 | 7.8136 | 7.8136 | 7.8076 | 7.8372 | 7.8184 | 7.8202 | 7.7876 | 7.7891 | |
OH− | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | 2.0000 | |
MF | 0.4741 | 0.4569 | 0.4448 | 0.4804 | 0.4832 | 0.4668 | 0.4886 | 0.4883 | 0.4851 | 0.4611 | 0.4507 | 0.4736 | 0.4956 | 0.4698 | |
AlVI + Fe3+ + Ti | 0.4265 | 0.5103 | 0.5165 | 0.4452 | 0.4605 | 0.5029 | 0.4722 | 0.4656 | 0.4714 | 0.4688 | 0.5208 | 0.4825 | 0.5026 | 0.5418 | |
Fe2+ + Mn | 1.2311 | 1.1997 | 1.2157 | 1.1804 | 1.1655 | 1.1824 | 1.1373 | 1.1438 | 1.1447 | 1.2387 | 1.2208 | 1.1771 | 1.0961 | 1.1315 | |
Ti/(Mg + Fe + Ti + Mn) | 0.0774 | 0.0882 | 0.0974 | 0.0878 | 0.0718 | 0.0819 | 0.0855 | 0.0748 | 0.0736 | 0.0739 | 0.0846 | 0.0860 | 0.0775 | 0.0901 | |
Al/(Al + Mg + Fe + Ti + Mn + Si) | 0.1898 | 0.1892 | 0.1896 | 0.1841 | 0.1814 | 0.1956 | 0.1833 | 0.1834 | 0.1815 | 0.1974 | 0.2016 | 0.1898 | 0.1831 | 0.1914 |
Component | Granodioriate | ||||||||
---|---|---|---|---|---|---|---|---|---|
H-1 | H-2 | H-3 | H-4 | H-5 | H-6 | H-7 | H-8 | H-9 | |
SiO2 | 46.49 | 46.36 | 46.19 | 46.25 | 42.27 | 45.64 | 45.75 | 46.38 | 48.75 |
Al2O3 | 6.79 | 7.56 | 8.13 | 7.21 | 10.93 | 8.31 | 8.92 | 7.95 | 5.79 |
K2O | 0.62 | 0.56 | 0.72 | 0.83 | 1.22 | 0.72 | 0.63 | 0.72 | 0.62 |
P2O5 | 0.01 | 0.07 | 0.00 | 0.02 | 0.07 | 0.02 | 0.02 | 0.02 | 0.05 |
CaO | 11.21 | 11.02 | 11.01 | 11.15 | 10.74 | 11.31 | 11.01 | 11.00 | 11.51 |
TiO2 | 0.98 | 1.53 | 1.38 | 1.34 | 2.44 | 1.52 | 1.88 | 1.56 | 0.83 |
Cr2O3 | 0.02 | 0.03 | 0.02 | 0.00 | 0.07 | 0.00 | 0.01 | 0.07 | 0.00 |
MnO | 0.55 | 0.38 | 0.41 | 0.55 | 0.49 | 0.42 | 0.43 | 0.42 | 0.48 |
FeO | 16.75 | 14.46 | 16.19 | 17.76 | 17.31 | 16.48 | 14.88 | 15.73 | 17.13 |
Na2O | 1.23 | 1.81 | 1.70 | 1.45 | 1.97 | 1.74 | 1.98 | 1.82 | 1.21 |
MgO | 11.72 | 13.35 | 11.62 | 11.23 | 10.44 | 11.81 | 12.55 | 12.78 | 12.23 |
Total | 96.36 | 97.11 | 97.38 | 97.78 | 97.93 | 97.94 | 98.07 | 98.44 | 98.58 |
Based on 23 oxygen atoms and 16 cations, chemical analysis is based on (O + OH + F + Cl) = 24 | |||||||||
Si | 6.93 | 6.79 | 6.82 | 6.85 | 6.28 | 6.72 | 6.67 | 6.73 | 7.11 |
AlIV | 1.07 | 1.21 | 1.18 | 1.15 | 1.72 | 1.28 | 1.33 | 1.27 | 0.89 |
Ti | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
T bit | 8.00 | 8.00 | 8.00 | 8.00 | 8.00 | 8.00 | 8.00 | 8.00 | 8.00 |
AlVI | 0.13 | 0.10 | 0.24 | 0.10 | 0.20 | 0.16 | 0.20 | 0.09 | 0.10 |
Ti | 0.11 | 0.17 | 0.15 | 0.15 | 0.27 | 0.17 | 0.21 | 0.17 | 0.09 |
Cr | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 | 0.01 | 0.00 |
Fe3+ | 0.66 | 0.70 | 0.53 | 0.64 | 0.75 | 0.59 | 0.60 | 0.76 | 0.56 |
Mg | 2.60 | 2.91 | 2.56 | 2.48 | 2.31 | 2.59 | 2.73 | 2.77 | 2.66 |
Fe2+ | 1.43 | 1.07 | 1.47 | 1.56 | 1.40 | 1.44 | 1.21 | 1.15 | 1.53 |
Mn | 0.07 | 0.05 | 0.05 | 0.07 | 0.06 | 0.05 | 0.05 | 0.05 | 0.06 |
C bit | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 |
Fe2+ | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
Ca | 1.79 | 1.73 | 1.74 | 1.77 | 1.71 | 1.78 | 1.72 | 1.71 | 1.80 |
Na | 0.21 | 0.27 | 0.26 | 0.23 | 0.29 | 0.22 | 0.28 | 0.29 | 0.20 |
B bit | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 |
Na | 0.15 | 0.24 | 0.23 | 0.18 | 0.28 | 0.28 | 0.28 | 0.22 | 0.14 |
K | 0.12 | 0.10 | 0.14 | 0.16 | 0.23 | 0.13 | 0.12 | 0.13 | 0.11 |
A bit | 0.27 | 0.35 | 0.37 | 0.34 | 0.51 | 0.42 | 0.40 | 0.35 | 0.25 |
Si | 6.93 | 6.79 | 6.82 | 6.85 | 6.28 | 6.72 | 6.67 | 6.73 | 7.11 |
Mg/(Mg + Fe2+) | 0.65 | 0.73 | 0.63 | 0.61 | 0.62 | 0.64 | 0.69 | 0.71 | 0.63 |
CaB | 1.79 | 1.73 | 1.74 | 1.77 | 1.71 | 1.78 | 1.72 | 1.71 | 1.80 |
(Na + K)A | 0.27 | 0.35 | 0.37 | 0.34 | 0.51 | 0.42 | 0.40 | 0.35 | 0.25 |
(Ca + Na)B | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 |
NaB | 0.21 | 0.27 | 0.26 | 0.23 | 0.29 | 0.22 | 0.28 | 0.29 | 0.20 |
Ti | 0.11 | 0.17 | 0.15 | 0.15 | 0.27 | 0.17 | 0.21 | 0.17 | 0.09 |
AlT | 1.19 | 1.31 | 1.41 | 1.26 | 1.91 | 1.44 | 1.53 | 1.36 | 0.99 |
Si* | 8.31 | 8.07 | 8.11 | 8.23 | 7.50 | 7.99 | 7.88 | 8.05 | 8.52 |
Samples | Rb (ppm) | Sr (ppm) | 87Rb/86Sr | 87Sr/86Sr | ±2σ | (87Sr/86Sr)i | Sm (ppm) | Nd (ppm) | 147Sm/144Nd | 143Nd/144Nd | ±2σ | (143Nd/144Nd)i | εNd(t) | TDM (Ma) | T2DM (Ma) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PMZG0721-b1 | 222.8 | 1455.9 | 0.44 | 0.710424 | 0.000004 | 0.709669 | 8.87 | 60.20 | 0.088975 | 0.511605 | 0.000010 | 0.511535 | −18.51 | 1885 | 3555 |
PMZG0721-b2 | 444.3 | 2343.7 | 0.55 | 0.710804 | 0.000003 | 0.709868 | 30.13 | 174.90 | 0.104086 | 0.511808 | 0.000008 | 0.511726 | −14.78 | 1864 | 3106 |
PMZG0721-b8 | 149.3 | 1620.4 | 0.27 | 0.711074 | 0.000005 | 0.710619 | 7.60 | 52.53 | 0.087393 | 0.511530 | 0.000009 | 0.511461 | −19.95 | 1951 | 3727 |
PMZG0721-b10 | 284.5 | 832.9 | 0.99 | 0.711055 | 0.000004 | 0.709370 | 5.99 | 40.40 | 0.089644 | 0.511600 | 0.000008 | 0.511530 | −18.61 | 1901 | 3568 |
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Chi, N.; Han, Z.; Tian, R.; Liu, C.; Shan, W.; Xiong, Y.; Li, Z.; Xie, Y.; Li, M.; Wang, X. Petrogenesis of the Early Cretaceous Zhouguan Granodiorite in Jiaodong Peninsula: Evidence from Mineralogy, Geochemistry, Geochronology, and Sr-Nd Isotopes. Minerals 2022, 12, 962. https://doi.org/10.3390/min12080962
Chi N, Han Z, Tian R, Liu C, Shan W, Xiong Y, Li Z, Xie Y, Li M, Wang X. Petrogenesis of the Early Cretaceous Zhouguan Granodiorite in Jiaodong Peninsula: Evidence from Mineralogy, Geochemistry, Geochronology, and Sr-Nd Isotopes. Minerals. 2022; 12(8):962. https://doi.org/10.3390/min12080962
Chicago/Turabian StyleChi, Naijie, Zuozhen Han, Ruicong Tian, Chuan’e Liu, Wei Shan, Yuqiang Xiong, Zengsheng Li, Yufeng Xie, Min Li, and Xiufeng Wang. 2022. "Petrogenesis of the Early Cretaceous Zhouguan Granodiorite in Jiaodong Peninsula: Evidence from Mineralogy, Geochemistry, Geochronology, and Sr-Nd Isotopes" Minerals 12, no. 8: 962. https://doi.org/10.3390/min12080962