Rb-Sr Isotopic Geochronology and Geological Implications of Dongfeng Gold Deposit in Jiaodong Area
The superlarge Dongfeng gold deposit is located in the Potouqing faults-alteration belt of the eastern part of the ‘Zhao-Lai-gold ore belt’, which belongs to the northwestern part of the Jiaodong area. Tectonically, ore bodies are controlled by faults and gold mainly occurs in the pyrite and polymet...
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Universidad Nacional de Colombia
2016-01-01
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| Series: | Earth Sciences Research Journal |
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| Online Access: | https://revistas.unal.edu.co/index.php/esrj/article/view/55178 |
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| author | Wang Zongyong Han Xin LV Guxian Zhang Xunyu Zhang Yingchun Fan Xiao Huo Qinglong Xu Yaqing |
| author_facet | Wang Zongyong Han Xin LV Guxian Zhang Xunyu Zhang Yingchun Fan Xiao Huo Qinglong Xu Yaqing |
| author_sort | Wang Zongyong |
| collection | DOAJ |
| description | The superlarge Dongfeng gold deposit is located in the Potouqing faults-alteration belt of the eastern part of the ‘Zhao-Lai-gold ore belt’, which belongs to the northwestern part of the Jiaodong area. Tectonically, ore bodies are controlled by faults and gold mainly occurs in the pyrite and polymetallic sulfide-bearing quartz vein. In this paper, Rb–Sr isotopic analysis is carried out with the beresite, which formed by hydrothermal metasomatism, and the Rb–Sr isochron age is 125.5±6.7Ma, indicating this deposit set up in the early Cretaceous of the late Yanshanian. Based on the relationship between the Dongfeng gold deposit and the Mesozoic granite, it is suggested that the formation of the gold deposit is a complex geological process of gradual enrichment and precipitation of the ore-forming elements. The initial 87Sr/86Sr ratio of the beresite is 0.711502±0.000069, which indicates the ore-forming materials mainly come from the crust. Combined with the complex mineralization process of the Dongfeng gold deposit and the reported H-O isotopic data, it is suggested that the ore-forming materials are mainly derived from the crust with some mantle materials, while the ore-forming fluids are originated primarily from magmatic hydrothermal and mantle with some precipitate water. |
| format | Article |
| id | doaj-art-08a5383178fa48de9d150210f977ab97 |
| institution | OA Journals |
| issn | 1794-6190 2339-3459 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Universidad Nacional de Colombia |
| record_format | Article |
| series | Earth Sciences Research Journal |
| spelling | doaj-art-08a5383178fa48de9d150210f977ab972025-08-20T02:28:59ZengUniversidad Nacional de ColombiaEarth Sciences Research Journal1794-61902339-34592016-01-0120110.15446/esrj.v20n1.5517843061Rb-Sr Isotopic Geochronology and Geological Implications of Dongfeng Gold Deposit in Jiaodong AreaWang Zongyong0Han Xin1LV Guxian2Zhang Xunyu3Zhang Yingchun4Fan Xiao5Huo Qinglong6Xu Yaqing7School of Earth Sciences and Resources Academy, China University of Geosciences, Beijing 100083, ChinaSchool of Earth Sciences and Resources Academy, China University of Geosciences, Beijing 100083, ChinaInstitute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, ChinaSchool of Earth Sciences and Resources Academy, China University of Geosciences, Beijing 100083, ChinaSchool of Earth Sciences and Resources Academy, China University of Geosciences, Beijing 100083, ChinaSchool of Earth Sciences and Resources Academy, China University of Geosciences, Beijing 100083, ChinaSchool of Earth Sciences and Resources Academy, China University of Geosciences, Beijing 100083, ChinaSchool of Earth Sciences and Resources Academy, China University of Geosciences, Beijing 100083, ChinaThe superlarge Dongfeng gold deposit is located in the Potouqing faults-alteration belt of the eastern part of the ‘Zhao-Lai-gold ore belt’, which belongs to the northwestern part of the Jiaodong area. Tectonically, ore bodies are controlled by faults and gold mainly occurs in the pyrite and polymetallic sulfide-bearing quartz vein. In this paper, Rb–Sr isotopic analysis is carried out with the beresite, which formed by hydrothermal metasomatism, and the Rb–Sr isochron age is 125.5±6.7Ma, indicating this deposit set up in the early Cretaceous of the late Yanshanian. Based on the relationship between the Dongfeng gold deposit and the Mesozoic granite, it is suggested that the formation of the gold deposit is a complex geological process of gradual enrichment and precipitation of the ore-forming elements. The initial 87Sr/86Sr ratio of the beresite is 0.711502±0.000069, which indicates the ore-forming materials mainly come from the crust. Combined with the complex mineralization process of the Dongfeng gold deposit and the reported H-O isotopic data, it is suggested that the ore-forming materials are mainly derived from the crust with some mantle materials, while the ore-forming fluids are originated primarily from magmatic hydrothermal and mantle with some precipitate water.https://revistas.unal.edu.co/index.php/esrj/article/view/55178Rb–Sr isochron(87Sr/86Sr) ratiomineralizationDongfeng gold depositJiaodong gold-centralized area. |
| spellingShingle | Wang Zongyong Han Xin LV Guxian Zhang Xunyu Zhang Yingchun Fan Xiao Huo Qinglong Xu Yaqing Rb-Sr Isotopic Geochronology and Geological Implications of Dongfeng Gold Deposit in Jiaodong Area Earth Sciences Research Journal Rb–Sr isochron (87Sr/86Sr) ratio mineralization Dongfeng gold deposit Jiaodong gold-centralized area. |
| title | Rb-Sr Isotopic Geochronology and Geological Implications of Dongfeng Gold Deposit in Jiaodong Area |
| title_full | Rb-Sr Isotopic Geochronology and Geological Implications of Dongfeng Gold Deposit in Jiaodong Area |
| title_fullStr | Rb-Sr Isotopic Geochronology and Geological Implications of Dongfeng Gold Deposit in Jiaodong Area |
| title_full_unstemmed | Rb-Sr Isotopic Geochronology and Geological Implications of Dongfeng Gold Deposit in Jiaodong Area |
| title_short | Rb-Sr Isotopic Geochronology and Geological Implications of Dongfeng Gold Deposit in Jiaodong Area |
| title_sort | rb sr isotopic geochronology and geological implications of dongfeng gold deposit in jiaodong area |
| topic | Rb–Sr isochron (87Sr/86Sr) ratio mineralization Dongfeng gold deposit Jiaodong gold-centralized area. |
| url | https://revistas.unal.edu.co/index.php/esrj/article/view/55178 |
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