Petrogenesis and Tectonic Significance of the ~276 Ma Baixintan Ni-Cu Ore-Bearing Mafic-Ultramafic Intrusion in the Eastern Tianshan Orogenic Belt, NW China
Abstract
:1. Introduction
2. Regional Geology
3. Petrography and Mineralization
4. Analytical Methods
4.1. SHRIMP Zircon Analyses
4.2. Whole-Rock Major and Trace Elements Analyses
4.3. Whole-Rock Sr-Nd Isotopes Analyses
4.4. Whole-Rock Ni, Cu, S and Platinum-Group Elements Analyses
5. Analytical Results
5.1. SHRIMP Analyses
5.2. Major Oxides and Trace Elements
5.3. Sr and Nd Isotopes
5.4. Ni, Cu, S and PGE Concentration
6. Discussion
6.1. Parental Magma and Sulfide Segregation
6.2. Tectonic Settings and Magma Source
6.2.1. Is Baixintan an Alaskan-Type Intrusion?
6.2.2. What Caused the Negative Anomalies of Nb, Ta, and Ti in the Baixintan Intrusion?
6.2.3. A Proposed Plume-Related Back-arc Spreading Tectonic Setting for the Baixintan Intrusion
6.3. Conceptional Genetic Model
7. Conclusions
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
Appendix A
Measure Point | 206Pbc % | U ppm | Th ppm | 232Th/238U | 206Pb* ppm | 206Pb/238U Age | 207Pb/206Pb Age | 208Pb/232Th Age | 207Pb*/206 Pb* | errors ±% | 207Pb*/235U | errors ±% | 206Pb*/238U | errors ±% |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BXT-1 | 0.13 | 385 | 703 | 1.89 | 14.4 | 273.9 ± 2.0 | 267 ± 57 | 269.5 ± 3.5 | 0.0516 | 2.5 | 0.3087 | 2.6 | 0.04341 | 0.76 |
BXT-2 | 0.14 | 602 | 866 | 1.49 | 22.8 | 278.4 ± 1.9 | 286 ± 58 | 269.7 ± 3.3 | 0.0520 | 2.6 | 0.3164 | 2.6 | 0.04413 | 0.68 |
BXT-3 | 0.17 | 1005 | 1921 | 1.98 | 38.2 | 278.9 ± 1.7 | 218 ± 49 | 268.5 ± 2.6 | 0.0505 | 2.1 | 0.3079 | 2.2 | 0.04422 | 0.61 |
BXT-4 | 0.00 | 388 | 544 | 1.45 | 14.6 | 275.5 ± 2.0 | 300 ± 50 | 275.1 ± 3.7 | 0.0523 | 2.2 | 0.3151 | 2.3 | 0.04366 | 0.75 |
BXT-5 | 0.19 | 605 | 858 | 1.47 | 23.0 | 278.9 ± 1.8 | 108 ± 47 | 273.6 ± 3.2 | 0.04819 | 2.0 | 0.2938 | 2.1 | 0.04422 | 0.67 |
BXT-6 | 0.18 | 512 | 1004 | 2.03 | 19.3 | 276.5 ± 1.9 | 209 ± 52 | 268.0 ± 3.1 | 0.0503 | 2.2 | 0.3039 | 2.3 | 0.04382 | 0.72 |
BXT-7 | 0.06 | 1356 | 1241 | 0.95 | 51.6 | 279.1 ± 1.6 | 237 ± 28 | 270.2 ± 2.5 | 0.05091 | 1.2 | 0.3106 | 1.3 | 0.04425 | 0.57 |
BXT-8 | 0.14 | 485 | 860 | 1.83 | 18.5 | 280.2 ± 2.0 | 295 ± 46 | 274.7 ± 3.3 | 0.0522 | 2.0 | 0.3198 | 2.2 | 0.04442 | 0.72 |
BXT-9 | 0.08 | 593 | 1367 | 2.38 | 22.3 | 275.9 ± 1.9 | 230 ± 51 | 267.9 ± 3.0 | 0.0508 | 2.2 | 0.3061 | 2.3 | 0.04374 | 0.69 |
BXT-10 | -- | 294 | 664 | 2.34 | 11.2 | 280.3 ± 2.3 | 311 ± 58 | 277.9 ± 3.9 | 0.0526 | 2.5 | 0.3221 | 2.7 | 0.04444 | 0.84 |
BXT-11 | 0.15 | 957 | 1513 | 1.63 | 36.5 | 279.2 ± 1.7 | 298 ± 34 | 272.8 ± 2.6 | 0.05228 | 1.5 | 0.3191 | 1.6 | 0.04427 | 0.61 |
BXT-12 | 0.21 | 685 | 1069 | 1.61 | 26.1 | 279.0 ± 1.8 | 104 ± 52 | 270.4 ± 3.0 | 0.0481 | 2.2 | 0.2933 | 2.3 | 0.04423 | 0.66 |
BXT-13 | 0.09 | 358 | 605 | 1.75 | 13.4 | 275.1 ± 2.1 | 263 ± 58 | 259.4 ± 4.7 | 0.0515 | 2.5 | 0.3096 | 2.6 | 0.04360 | 0.78 |
BXT-14 | 0.20 | 1090 | 2190 | 2.08 | 41.0 | 275.7 ± 1.6 | 211 ± 36 | 265.9 ± 2.4 | 0.05035 | 1.6 | 0.3033 | 1.7 | 0.04369 | 0.60 |
BXT-15 | 0.26 | 521 | 948 | 1.88 | 19.6 | 275.6 ± 1.9 | 190 ± 67 | 265.6 ± 3.3 | 0.0499 | 2.9 | 0.3005 | 3.0 | 0.04368 | 0.72 |
BXT-16 | 0.09 | 932 | 1326 | 1.47 | 34.8 | 274.0 ± 1.7 | 284 ± 35 | 269.6 ± 2.7 | 0.05196 | 1.5 | 0.3111 | 1.6 | 0.04342 | 0.62 |
BXT-17 | 0.10 | 1455 | 2062 | 1.46 | 54.9 | 276.9 ± 1.5 | 190 ± 29 | 268.5 ± 2.3 | 0.04990 | 1.3 | 0.3019 | 1.4 | 0.04388 | 0.57 |
BXT-18 | 0.15 | 540 | 909 | 1.74 | 20.1 | 272.4 ± 1.9 | 232 ± 50 | 269.2 ± 3.2 | 0.0508 | 2.2 | 0.3023 | 2.3 | 0.04315 | 0.70 |
BXT-19 | 0.05 | 1003 | 1658 | 1.71 | 37.3 | 273.3 ± 1.6 | 282 ± 33 | 264.5 ± 2.5 | 0.05192 | 1.4 | 0.3100 | 1.6 | 0.04331 | 0.62 |
BXT-20 | 0.20 | 1218 | 2709 | 2.30 | 45.8 | 275.6 ± 1.6 | 202 ± 31 | 270.4 ± 4.2 | 0.05015 | 1.3 | 0.3020 | 1.4 | 0.04368 | 0.59 |
BXT-21 | 0.26 | 750 | 1494 | 2.06 | 28.7 | 280.0±1.9 | 212±60 | 273.0 ± 3.1 | 0.0504 | 2.6 | 0.3082 | 2.7 | 0.04439 | 0.70 |
Sample | BXT-B5 | BXT-B10 | BXT-B14 | BXT-B17 | BXT-B19 | BXT-B20 | BXT-B21 | BXT-B22 | BXT-B25 | BXT-B26 | GWB07104/ GWB07105 | GWB07104/ GWB07105 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Rock types | Lherzolite | Lherzolite | Lherzolite | Lherzolite | Lherzolite | Olivine Gabbro | Lherzolite | Gabbro | Gabbro | Gabbro | Andesite/ Basalt | Andesite/ Basalt |
Analytical Values | Recommended Values | |||||||||||
SiO2 | 41.33 | 40.75 | 41.10 | 41.25 | 42.72 | 47.87 | 42.22 | 45.27 | 47.96 | 48.42 | 60.71 | 60.62 |
TiO2 | 0.31 | 0.30 | 0.35 | 0.38 | 0.42 | 0.59 | 0.48 | 0.49 | 1.33 | 0.57 | 0.521 | 0.515 |
Al2O3 | 5.84 | 5.02 | 5.36 | 5.74 | 7.54 | 18.04 | 4.39 | 15.32 | 16.98 | 17.62 | 16.12 | 16.17 |
TFeO | 11.33 | 11.70 | 11.48 | 11.39 | 10.90 | 6.66 | 11.86 | 7.45 | 8.57 | 5.49 | 4.88 | 4.41 |
MnO | 0.18 | 0.18 | 0.18 | 0.18 | 0.17 | 0.11 | 0.18 | 0.12 | 0.16 | 0.10 | 0.078 | 0.078 |
MgO | 30.10 | 32.28 | 31.22 | 29.99 | 26.79 | 10.67 | 30.78 | 14.92 | 7.93 | 9.87 | 1.71 | 1.72 |
CaO | 3.33 | 2.82 | 2.90 | 3.11 | 4.09 | 9.57 | 2.62 | 7.94 | 9.02 | 10.09 | 5.26 | 5.20 |
Na2O | 0.75 | 0.66 | 0.77 | 0.82 | 1.04 | 2.14 | 0.78 | 2.21 | 3.48 | 3.27 | 3.89 | 3.86 |
K2O | 0.29 | 0.22 | 0.29 | 0.32 | 0.34 | 0.37 | 0.41 | 0.25 | 0.43 | 0.29 | 1.87 | 1.89 |
P2O5 | 0.074 | 0.062 | 0.071 | 0.082 | 0.083 | 0.095 | 0.092 | 0.074 | 0.18 | 0.073 | 0.244 | 0.236 |
NiO | 0.148 | 0.158 | 0.144 | 0.148 | 0.116 | 0.0308 | 0.138 | 0.0461 | 0.016 | 0.0226 | 0.0024 | 0.0021 |
Cr2O3 | 0.36 | 0.385 | 0.334 | 0.338 | 0.247 | 0.0587 | 0.328 | 0.0931 | 0.0294 | 0.077 | 0.0043 | 0.0046 |
LOI | 5.50 | 5.03 | 5.32 | 5.76 | 5.11 | 3.54 | 5.24 | 5.58 | 3.64 | 3.87 | 4.44 | 4.44 |
Mg# | 82.57 | 83.11 | 82.90 | 82.44 | 81.42 | 74.05 | 82.23 | 78.11 | 62.26 | 76.22 | - | - |
MgO/TFeO | 2.66 | 2.76 | 2.72 | 2.63 | 2.46 | 2.60 | 2.11 | 2.00 | 1.80 | 1.60 | - | - |
Total | 99.90 | 99.90 | 99.87 | 99.90 | 99.86 | 99.91 | 99.89 | 99.94 | 99.94 | 99.89 | - | - |
Rb | 9.52 | 6.54 | 7.38 | 7.93 | 8.6 | 9.26 | 8.72 | 7.04 | 7.52 | 5.17 | 40.25 | 37 |
Sr | 163 | 120 | 132 | 193 | 197 | 383 | 60.8 | 324 | 494 | 463 | 1192.2 | 1100 |
Ba | 74 | 60.2 | 65.9 | 76 | 88 | 113 | 82.3 | 94.2 | 142 | 167 | 512.7 | 527 |
Y | 10.40 | 6.50 | 7.00 | 7.87 | 8.63 | 12.80 | 10.20 | 10.20 | 15.20 | 13.40 | 21.95 | 22 |
Zr | 30.7 | 27.1 | 28.6 | 31.1 | 35.1 | 46.1 | 45.7 | 35.4 | 70.1 | 46.6 | 271.50 | 277 |
Nb | 3.05 | 2.6 | 2.43 | 2.27 | 2.1 | 2.13 | 2.18 | 1.68 | 4.33 | 1.94 | 70.21 | 68 |
Ta | 0.37 | 0.33 | 0.39 | 0.33 | 0.35 | 0.34 | 0.34 | 0.30 | 0.40 | 0.25 | 4.127 | 4.3 |
Hf | 0.97 | 0.81 | 0.91 | 0.98 | 1.12 | 1.46 | 1.40 | 1.16 | 1.82 | 1.38 | 6.463 | 6.5 |
Th | 1.00 | 0.81 | 0.82 | 0.83 | 0.94 | 1.08 | 0.98 | 1.02 | 0.50 | 0.84 | 5.81 | 6.0 |
U | 0.19 | 0.18 | 0.18 | 0.20 | 0.25 | 0.34 | 0.30 | 0.45 | 0.28 | 0.30 | 1.331 | 1.4 |
Pb | 3.34 | 2.1 | 3.05 | 2.24 | 2.9 | 3.04 | 2.3 | 2.84 | 1.69 | 3.96 | 6.76 | 7 |
Cs | 0.77 | 0.37 | 0.56 | 1.28 | 1.08 | 0.48 | 0.55 | 0.68 | 0.52 | 0.89 | 0.635 | 0.7 |
La | 3.65 | 2.91 | 3.27 | 3.67 | 4.06 | 5.19 | 4.58 | 4.10 | 6.09 | 4.62 | 54.81 | 56 |
Ce | 8.76 | 6.95 | 7.65 | 8.85 | 9.67 | 12.30 | 10.30 | 9.66 | 15.00 | 10.80 | 104.62 | 105 |
Pr | 1.22 | 0.98 | 1.09 | 1.22 | 1.32 | 1.75 | 1.50 | 1.42 | 2.31 | 1.59 | 12.74 | 13.2 |
Nd | 5.46 | 4.44 | 4.94 | 5.67 | 5.98 | 8.15 | 6.95 | 6.46 | 11.10 | 7.69 | 48.43 | 54 |
Sm | 1.48 | 1.14 | 1.31 | 1.46 | 1.63 | 2.25 | 1.84 | 1.79 | 3.00 | 2.21 | 9.84 | 10.2 |
Eu | 0.53 | 0.38 | 0.44 | 0.47 | 0.54 | 0.80 | 0.54 | 0.64 | 1.18 | 0.84 | 3.215 | 3.2 |
Gd | 1.63 | 1.14 | 1.34 | 1.50 | 1.67 | 2.30 | 1.94 | 1.82 | 2.96 | 2.40 | 8.38 | 8.5 |
Tb | 0.29 | 0.20 | 0.24 | 0.27 | 0.29 | 0.44 | 0.32 | 0.34 | 0.55 | 0.42 | 1.191 | 1.2 |
Dy | 1.63 | 1.22 | 1.42 | 1.54 | 1.75 | 2.55 | 1.93 | 2.01 | 2.90 | 2.54 | 5.53 | 5.6 |
Ho | 0.36 | 0.26 | 0.30 | 0.33 | 0.36 | 0.52 | 0.40 | 0.41 | 0.57 | 0.53 | 0.844 | 0.88 |
Er | 0.96 | 0.72 | 0.81 | 0.90 | 1.01 | 1.46 | 1.16 | 1.13 | 1.62 | 1.40 | 1.958 | 2.0 |
Tm | 0.15 | 0.11 | 0.12 | 0.14 | 0.15 | 0.22 | 0.18 | 0.18 | 0.24 | 0.21 | 0.261 | 0.28 |
Yb | 0.92 | 0.72 | 0.77 | 0.86 | 0.96 | 1.45 | 1.16 | 1.14 | 1.56 | 1.35 | 1.437 | 1.5 |
Lu | 0.14 | 0.11 | 0.12 | 0.13 | 0.15 | 0.23 | 0.18 | 0.18 | 0.23 | 0.20 | 0.172 | 0.19 |
∑REE | 37.57 | 27.78 | 30.81 | 34.87 | 38.17 | 52.41 | 43.18 | 41.48 | 64.52 | 50.19 | - | - |
LREE | 21.10 | 16.79 | 18.70 | 21.34 | 23.20 | 30.44 | 25.71 | 24.07 | 38.68 | 27.75 | - | - |
HREE | 16.47 | 10.98 | 12.11 | 13.53 | 14.97 | 21.97 | 17.47 | 17.41 | 25.84 | 22.44 | - | - |
LREE/HREE | 1.28 | 1.53 | 1.54 | 1.58 | 1.55 | 1.39 | 1.47 | 1.38 | 1.50 | 1.24 | - | - |
δEu | 1.04 | 1.00 | 1.00 | 0.97 | 0.98 | 0.87 | 1.06 | 1.08 | 1.20 | 1.11 | - | - |
Sample No. | BXT-B5 | BXT-B10 | BXT-B14 | BXT-B17 | BXT-B19 | BXT-B20 | BXT-B21 | BXT-B22 | BXT-B23 | BXT-B25 | BXT-B26 |
---|---|---|---|---|---|---|---|---|---|---|---|
Rock Types | Lherzolite | Lherzolite | Lherzolite | Lherzolite | Lherzolite | Olivine Gabbro | Lherzolite | Gabbro | Lherzolite | Gabbro | Gabbro |
Rb (×10−6) | 11.34 | 7.11 | 8.06 | 9.58 | 9.76 | 8.73 | 10.78 | 6.96 | 4.77 | 10.10 | 5.87 |
Sr (×10−6) | 175.76 | 127.38 | 133.10 | 206.04 | 201.95 | 393.46 | 56.91 | 386.14 | 225.34 | 516.02 | 468.92 |
87Rb/86Sr | 0.186609 | 0.161571 | 0.175169 | 0.134506 | 0.139896 | 0.064176 | 0.548149 | 0.052160 | 0.061252 | 0.056626 | 0.036231 |
87Sr/86Sr | 0.704373 | 0.704181 | 0.704230 | 0.704948 | 0.704319 | 0.703920 | 0.706009 | 0.704282 | 0.704570 | 0.703719 | 0.704097 |
2σ | 0.000012 | 0.000010 | 0.000010 | 0.000010 | 0.000012 | 0.000011 | 0.000010 | 0.000010 | 0.000011 | 0.000013 | 0.000012 |
(87Sr/86Sr)i | 0.703638 | 0.703545 | 0.703540 | 0.704418 | 0.703768 | 0.703667 | 0.703850 | 0.704077 | 0.704329 | 0.703496 | 0.703954 |
Sm (×10−6) | 1.21 | 1.07 | 1.23 | 1.31 | 1.47 | 2.12 | 1.67 | 1.70 | 1.33 | 2.99 | 2.16 |
Nd (×10−6) | 4.88 | 4.06 | 4.66 | 5.08 | 5.61 | 7.69 | 6.25 | 6.05 | 4.86 | 11.06 | 7.24 |
147Sm/144Nd | 0.150392 | 0.159137 | 0.159332 | 0.155910 | 0.157928 | 0.166553 | 0.160894 | 0.169709 | 0.164625 | 0.163339 | 0.179852 |
143Nd/144Nd | 0.512794 | 0.512820 | 0.512801 | 0.512830 | 0.512842 | 0.512884 | 0.512826 | 0.512843 | 0.512849 | 0.512972 | 0.512870 |
2σ | 0.000026 | 0.000020 | 0.000021 | 0.000016 | 0.000015 | 0.000013 | 0.000016 | 0.000018 | 0.000016 | 0.000008 | 0.000012 |
(143Nd/144Nd)i | 0.512522 | 0.512532 | 0.512512 | 0.512548 | 0.512556 | 0.512582 | 0.512534 | 0.512536 | 0.512551 | 0.512676 | 0.512544 |
εNd(t) | 4.68 | 4.88 | 4.50 | 5.19 | 5.35 | 5.87 | 4.94 | 4.96 | 5.25 | 7.70 | 5.12 |
Age (Ma) | 276.8 | ||||||||||
Standards | Recommended value | Analytical value | Recommended value | Analytical value | |||||||
87Sr/86Sr | 2σ | 87Sr/86Sr | 2σ | 143Nd/144Nd | 2σ | 143Nd/144Nd | 2σ | ||||
BHVO-2 | 0.70348 | 0.0002 | 0.703484 | 0.00007 | 0.51297 | 0.00003 | 0.512950 | 0.000008 | |||
BCR-1 | 0.70501 | 0.0002 | 0.705017 | 0.00009 | 0.51263 | 0.00002 | 0.512641 | 0.000011 |
Sample No. | BXT-B5 | BXT-B10 | BXT-B14 | BXT-B17 | BXT-B19 | BXT-B20 | BXT-B21 | BXT-B22 | BXT-B23 | BXT-B25 | BXT-B26 |
---|---|---|---|---|---|---|---|---|---|---|---|
Rock Types | Lherzolite | Lherzolite | Lherzolite | Lherzolite | Lherzolite | Olivine Gabbro | Lherzolite | Gabbro | Lherzolite | Gabbro | Gabbro |
Os | 0.21 | 0.29 | 0.34 | 0.23 | 0.07 | 0.03 | 0.12 | 0.04 | 0.1 | 0.07 | 0.04 |
Ir | 0.11 | 0.14 | 0.16 | 0.11 | 0.06 | 0.03 | 0.06 | <0.02 | <0.02 | 0.03 | <0.02 |
Ru | 0.32 | 0.34 | 0.41 | 0.32 | 0.19 | 0.17 | 0.22 | 0.15 | 0.17 | 0.15 | 0.16 |
Rh | 0.11 | 0.12 | 0.16 | 0.12 | 0.06 | 0.03 | 0.06 | 0.03 | 0.42 | 0.02 | 0.23 |
Pt | 1.58 | 2.43 | 2.73 | 1.72 | 0.69 | 0.2 | 1.59 | 0.2 | 0.24 | 0.24 | <0.2 |
Pd | 0.95 | 1.12 | 1.05 | 0.94 | 0.6 | 0.2 | 0.67 | 0.21 | 0.34 | 0.3 | <0.2 |
Ni | 1090 | 1300 | 1160 | 1170 | 949 | 201 | 1110 | 314 | 403 | 106 | 174 |
Cu | 72.6 | 124 | 106 | 148 | 230 | 46.4 | 115 | 91.7 | 127 | 18.9 | 90.9 |
S | 1338 | 1124 | 919 | 1147 | 2180 | 883 | 1030 | 507 | 408 | 638 | 547 |
ΣPGE | 3.28 | 4.44 | 4.85 | 3.44 | 1.67 | 0.66 | 2.72 | - | - | 0.81 | - |
IPGE | 0.64 | 0.77 | 0.91 | 0.66 | 0.32 | 0.23 | 0.40 | - | - | 0.25 | - |
PPGE | 2.64 | 3.67 | 3.94 | 2.78 | 1.35 | 0.43 | 2.32 | 0.44 | 1.00 | 0.56 | - |
Ni/Cu | 15.01 | 10.48 | 10.94 | 7.91 | 4.13 | 4.33 | 9.65 | 3.42 | 3.17 | 5.61 | 1.91 |
Pd/Ir | 8.64 | 8.00 | 6.56 | 8.55 | 10.00 | 6.67 | 11.17 | - | - | 10.00 | - |
Cu/Pd | 76.42 | 110.71 | 100.95 | 157.45 | 383.33 | 232.00 | 171.64 | 436.67 | 373.53 | 63.00 | - |
Sample | GBW07290 (Peridotite) | GBW07291 (Pyroxene peridotete) | |||||||||
Analytical results | Reference values | Analytical results | Reference values | ||||||||
Os | 7.59 | 9.6 ± 2.0 | 1.99 | 2.4 ± 0.6 | |||||||
Ir | 4.07 | 4.3 ± 0.5 | 6.45 | 4.7 ± 1.1 | |||||||
Ru | 10.0 | 14.7 ± 2.7 | 1.80 | 2.5 ± 0.2 | |||||||
Rh | 1.23 | 1.3 ± 0.3 | 5.05 | 4.3 ± 0.8 | |||||||
Pt | 6.39 | 6.4 ± 0.9 | 62.8 | 58 ± 5 | |||||||
Pd | 3.83 | 4.6 ± 0.6 | 73.9 | 60 ± 9 | |||||||
Sample | GXR-1 | GXR-3 | |||||||||
Analytical results | Recommended values | Analytical results | Recommended values | ||||||||
Ni | 44.2 | 41 | 65.1 | 60 | |||||||
Cu | 1055 | 1110 | 17.2 | 15 | |||||||
S | 2657 | 2570 | 2428 | 2320 | |||||||
Ni, Cu, S in ppm, PGEs in ppb. |
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Tectonic Units | Intrusions | Rock Types | Testing Methods | Ages (Ma) | Data Sources |
---|---|---|---|---|---|
Dananhu-Tousuquan arc | Baixintan | Olivine gabbro | SHRIMP | 276.8 ± 1.1 | This study |
Olivine norite | LA-MC-ICP-MS | 286.0 ± 1.6 | [10] | ||
Xiaorequanzi-Wutongwuzi intra-arc basin | Lubei | Hornblende gabbro | LA-MC-ICP-MS | 287.9 ± 1.6 | [133] |
Juluotage Belt | Huangshan | Diorite | SHRIMP | 269 ± 2 | [3] |
Huangshandong | Olivine norite | SHRIMP | 274 ± 3 | [2] | |
Huangshannan | Gabbronorite | SIMS | 282.5 ± 1.4 | [134] | |
Xiangshan | Norite gabbro | SHRIMP | 285 ± 1.2 | [1] | |
Tudun | Hornblende gabbro | LA-ICP-MS | 298.37 ± 0.94 | [9] | |
Hulu | Gabbro diorite | LA-ICP-MS | 274.5 ± 3.9 | [135] | |
Tulaergen | Gabbro | SHRIMP | 300.5 ± 3.2 | [8] | |
Middle Tianshan Terrane | Tianyu | Gabbro | LA-ICP-MS | 290 ± 3.4 | [7] |
Baishiquan | Gabbro | SHRIMP | 281 ± 0.9 | [5] | |
Beishan Rift | Xuanwoling | Gabbro | SIMS | 260.7 ± 2.0 | [136] |
Hongshishan | Olivine gabbro | LA-ICP-MS | 281.8 ± 2.6 | [137] | |
Bijiashan | Gabbro | SIMS | 279.2 ± 2.3 | [28] | |
Luodong | Gabbro | SIMS | 283.8 ± 1.1 | [138] | |
Poyi | Gabbro | SHRIMP | 278 ± 2 | [139] |
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You, M.; Li, W.; Li, H.; Zhang, Z.; Li, X. Petrogenesis and Tectonic Significance of the ~276 Ma Baixintan Ni-Cu Ore-Bearing Mafic-Ultramafic Intrusion in the Eastern Tianshan Orogenic Belt, NW China. Minerals 2021, 11, 348. https://doi.org/10.3390/min11040348
You M, Li W, Li H, Zhang Z, Li X. Petrogenesis and Tectonic Significance of the ~276 Ma Baixintan Ni-Cu Ore-Bearing Mafic-Ultramafic Intrusion in the Eastern Tianshan Orogenic Belt, NW China. Minerals. 2021; 11(4):348. https://doi.org/10.3390/min11040348
Chicago/Turabian StyleYou, Minxin, Wenyuan Li, Houmin Li, Zhaowei Zhang, and Xin Li. 2021. "Petrogenesis and Tectonic Significance of the ~276 Ma Baixintan Ni-Cu Ore-Bearing Mafic-Ultramafic Intrusion in the Eastern Tianshan Orogenic Belt, NW China" Minerals 11, no. 4: 348. https://doi.org/10.3390/min11040348