| The genesis of the slab window-related Arzular low-sulfidation epithermal gold mineralization （eastern Pontides, NE Turkey） |
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| 作者姓名： | Enver Akaryah Necati Tueysuez |
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| 作者单位： | [1]Gumushane University, Department of Geology. 29000. Gumushane, Turkey [2]Karadeniz Technical University, Departmelnt of Geology, 61080, Trabzon, Turkey |
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| 基金项目： | supported by the Karadeniz Technical University Research Fund(2006.112.05.02) |
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| 摘 要： | The Arzular mineralization is one of the best examples of epithermal gold deposits in the eastern Pontides orogenic belt.The mineralization is hosted by the subduction-related basaltic andesites and is mainly controlled by E-W and NE-SW trending fracture zones.The main ore minerals are galena, sphalerite,pyrite.chalcopyrite.tetrahedrite and gold.Homogenization temperatures of fluid inclusions are between 130 and 295℃ for quartz and between 90 and 133℃ for sphalerite.Sulphur isotope values obtained from pyrite,galena and sphalerite vary between 1.2‰ and 3‰.indicating that sulphur belongs to magmatic origin and was derived from the Lutetian non-adakitic granitic intrusions in the region.Oxygen isotope values are between 15.0‰ and 16.7‰ and hydrogen isotope values are between -87‰ and -91‰ The sulphur isotope thermometer yielded temperatures in the range of 244-291℃ for the ore formation.Our results support the hypothesis that the Arzular mineralization is a low-sulfidation epithermal gold deposit associated with non-adakitic subduction- related granitic magmas that were generated by slab window-related processes in a south-dipping subduction zone during the Lutetian.
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| 关 键 词： | Slab window Epithermal gold Isotope Fluid inclusion Mineralization Tectonics |
| 收稿时间： | 11 September 2012 |
http://www.sciencedirect.com/science/article/pii/S1674987112001508 |
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| Enver Akaryah,Necati Tueysuez.http://www.sciencedirect.com/science/article/pii/S1674987112001508[J].Geoscience Frontiers,2013,4(4):409-421. |
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| Authors: | Enver Akaryal Necati Tüysüz |
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| Institution: | 1. Gumushane University, Department of Geology, 29000, Gumushane, Turkey
2. Karadeniz Technical University, Department of Geology, 61080, Trabzon, Turkey |
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| Abstract: | The Arzular mineralization is one of the best examples of epithermal gold deposits in the eastern Pontides orogenic belt. The mineralization is hosted by the subduction-related basaltic andesites and is mainly controlled by E–W and NE–SW trending fracture zones. The main ore minerals are galena, sphalerite, pyrite, chalcopyrite, tetrahedrite and gold. Homogenization temperatures of fluid inclusions are between 130 and 295 °C for quartz and between 90 and 133 °C for sphalerite. Sulphur isotope values obtained from pyrite, galena and sphalerite vary between ?1.2‰ and 3‰, indicating that sulphur belongs to magmatic origin and was derived from the Lutetian non-adakitic granitic intrusions in the region. Oxygen isotope values are between 15.0‰ and 16.7‰, and hydrogen isotope values are between ?87‰ and ?91‰. The sulphur isotope thermometer yielded temperatures in the range of 244–291 °C for the ore formation. Our results support the hypothesis that the Arzular mineralization is a low-sulfidation epithermal gold deposit associated with non-adakitic subduction-related granitic magmas that were generated by slab window-related processes in a south-dipping subduction zone during the Lutetian. |
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| Keywords: | Slab window Epithermal gold Isotope Fluid inclusion Mineralization Tectonics |
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