دورية أكاديمية
Geology, isotope geochemistry, and ore genesis of the Yindonggou Ag-Au(-Pb-Zn) deposit, Hubei Province, China
| العنوان: | Geology, isotope geochemistry, and ore genesis of the Yindonggou Ag-Au(-Pb-Zn) deposit, Hubei Province, China |
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| المؤلفون: | Yue, Su-Wei, Deng, Xiao-Hua, Bagas, Leon |
| المساهمون: | Deng, XH (reprint author), Beijing Inst Geol Mineral Resources, Beijing 100012, Peoples R China., S China Univ Technol, Guangzhou Coll, Guangzhou, Guangdong, Peoples R China., Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou, Guangdong, Peoples R China., Beijing Inst Geol Mineral Resources, Beijing 100012, Peoples R China., Peking Univ, Key Lab Orogen & Crust Evolut, Beijing 100871, Peoples R China., Univ Western Australia, Ctr Explorat Targeting, ARC Ctr Excellence Core Crust Fluid Syst, Crawley, WA 6009, Australia. |
| المصدر: | SCI |
| بيانات النشر: | geological journal |
| سنة النشر: | 2014 |
| المجموعة: | Peking University Institutional Repository (PKU IR) / 北京大学机构知识库 |
| مصطلحات موضوعية: | Yindonggou Ag-Au(-Pb-Zn) deposit, isotope geochemistry, ore genesis, orogenic-type deposit, Qinling Orogen, central China, OROGENIC GOLD DEPOSITS, ZHAIWA MO-CU, FLUID INCLUSION, TECTONIC EVOLUTION, FORMING FLUIDS, AR-40/AR-39 GEOCHRONOLOGY, COLUMBIA SUPERCONTINENT, TONGBAI MOUNTAINS, HENAN PROVINCE |
| الوصف: | The Yindonggou Ag-Au(-Pb-Zn) deposit is hosted by metamorphosed volcanic rocks of the ca. 740-760Ma Wudangshan Group in the Proterozoic Wudang Block of the southern part of the Qinling Orogen, central China. The deposit consists of a series of mineralized quartz veins located in the Yindongyan Anticline. Based on the mineral assemblages and cross-cutting relationships of quartz veins, the deposit can be divided into: (1) early fine-grained quartz-sphalerite-galena veins; (2) fine-grained quartz-silver-gold veins containing minor amounts of pyrite; (3) coarse-grained quartz veins with minor amounts of galena, sphalerite, and chalcopyrite; and (4) late ankerite-quartz veins. Most of the Pb-Zn mineralization formed during the early (Stage 1) veins followed by the deposition of Ag-Au mineralization in the Stage 2 veins. The delta O-18 value for the ore-forming fluids decreases from 6.6-9.4% in the Stage 1 veins through 3.6-4.9% in the Stage 2 veins to -1.2% to 0.4% in the Stage 3 veins (the delta O-18 values could not be determined for the Stage 4 veins). Furthermore, the delta D values are -74% for the Stage 1 veins, -95% to -56 % for the Stage 2 veins, and -48% to -73% for the Stage 3 veins. The delta C-13 values for ankerite in the Stage 4 veins are between -2.9% and -1.1%. The delta D vs. delta O-18(H2O) plot for these values indicates that there was a shift from metamorphic fluids during the formation of the early veins to meteoric fluids during the formation of the later veins at the deposit. The H-O-C isotope systematics also indicate that the ore fluids forming the deposit were probably initially sourced from metamorphic dehydration of volcanic-carbonate rocks in the ca. 740-760Ma Wudangshan Group and with time gradually mixed with meteoric water by Stage 4. The d 34S values for sulphides from the deposit range from -0.9% to 7.1% in the Stage 1 veins, 3.8% to 5.0% in the Stage 2 veins, and 2.4% to 11.3% in the wallrocks. Sulphides from the mineralized Stage 1 veins yield 206Pb/204Pb ratios of 16.44-16.6, ... |
| نوع الوثيقة: | journal/newspaper |
| اللغة: | English |
| تدمد: | 0072-1050 1099-1034 |
| العلاقة: | GEOLOGICAL JOURNAL.2014,49,(4-5,SI),442-462.; 866023; http://hdl.handle.net/20.500.11897/231018Test; WOS:000343983700007 |
| DOI: | 10.1002/gj.2561 |
| الإتاحة: | https://doi.org/20.500.11897/231018Test https://doi.org/10.1002/gj.2561Test https://hdl.handle.net/20.500.11897/231018Test |
| رقم الانضمام: | edsbas.D2F40730 |
| قاعدة البيانات: | BASE |
| تدمد: | 00721050 10991034 |
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| DOI: | 10.1002/gj.2561 |