Geological characteristics, sources and controlling factors of the Triassic gold deposits in the northern margin of the North China Craton
文献类型：期刊论文
| 作者 | Bai Yang1,2,4,5; Zhang LianChang1,5; Zhu MingTian1,5; Huang Ke1,5; Zhou LingLi3 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2022-04-01 |
| 卷号 | 38期号:4页码:993-1024 |
| 关键词 | Triassic gold mineralization belt Ore-forming fluid Material source Regional extension Northern margin of the North China Craton |
| ISSN号 | 1000-0569 |
| DOI | 10.18654/1000-0569/2022.04.04 |
| 英文摘要 | The Triassic is an important metallogenic period of the North China Craton ( NCC ). Triassic gold deposits are widely distributed on the northern margin of the NCC, forming an EW-striking gold metallogenic belt with a length of similar to 1500km, including Wulashan-Daqingshan, Zhangjiakou, Jidong-Liaoxi, Qingchengzi and Jiapigou gold districts. This gold belt is mainly hosted by the Neoarchean-Mesoproterozoic metamorphic rocks and Mesozoic granites. The gold deposits are dominated by quartz-vein mineralization, accompanied by altered-rock type mineralization; the mineralization of the western and central sections of the gold belt are characterized by gold or gold-molybdenum mineralization, whereas the eastern section is dominated by gold polymetallic mineralization. Geochronology data show that the Triassic gold deposits in the northern margin of the NCC were mainly formed in the Late Triassic (240 similar to 220Ma) ; the characteristics of fluid inclusions indicate that the ore-forming fluids have characteristics of medium temperature, low salinity , and low density. It belongs to the H2O-NaCl-CO2 +/- CH4 system, and the phase-separation may be the main mechanism of gold precipitation in quartz-vein type gold deposits; the hydrogen and oxygen isotopic composition shows that the ore-forming fluid was magmatic water or metamorphic water in the early stage and was mixed with atmospheric water in the later stage. The carbon, sulfur, lead, helium and argon isotopes of the ores and the neodymium and hafnium isotopic compositions of the mineralization-related rocks indicate that the ore-forming fluids, materials, and the mineralization-related rocks are all related to crust-mantle mixing. The contribution of mantle-derived materials and fluids is caused by regional Triassic magmatism, moreover, the crust-derived components mainly come from host rocks. The formation of the Triassic gold deposits in the northern margin of the NCC generally respond to the post-orogenic extension of the Central Asian Orogenic Belt. Northern margin of NCC was affected by the post-collision extension of the Central Asian Orogenic Belt in the Late Triassic, causing the initial lithospheric thinning occurred along the northern margin. Series deep-large faults, alkaline, and alkaline granites which simultaneously formed provided superior conditions for the regional gold mineralization. Furthermore, the eastern part of the northern marginal gold belt may also be affected by the collision between the Yangtze Craton and the NCC, which is the main reason for the difference in the mineralization characteristics of the central and western gold districts. |
| WOS关键词 | ASIAN OROGENIC BELT ; ORE-FORMING FLUIDS ; INNER-MONGOLIA ; EASTERN HEBEI ; H-O ; QINGCHENGZI OREFIELD ; INTRUSIVE ROCKS ; JILIN PROVINCE ; GEOCHEMISTRY ; PB |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000798187600004 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/106019]  |
| 专题 | 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 通讯作者 | Zhang LianChang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Taiyuan Univ, Coll Min Engn, Taiyuan 030024, Peoples R China 3.Univ Coll Dublin, Sch Earth Sci, iCRAG, Dublin 4, Ireland 4.Univ Durham, Durham DH1 3LE, England 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai Yang,Zhang LianChang,Zhu MingTian,et al. Geological characteristics, sources and controlling factors of the Triassic gold deposits in the northern margin of the North China Craton[J]. ACTA PETROLOGICA SINICA,2022,38(4):993-1024. |
| APA | Bai Yang,Zhang LianChang,Zhu MingTian,Huang Ke,&Zhou LingLi.(2022).Geological characteristics, sources and controlling factors of the Triassic gold deposits in the northern margin of the North China Craton.ACTA PETROLOGICA SINICA,38(4),993-1024. |
| MLA | Bai Yang,et al."Geological characteristics, sources and controlling factors of the Triassic gold deposits in the northern margin of the North China Craton".ACTA PETROLOGICA SINICA 38.4(2022):993-1024. |
入库方式： OAI收割
来源：地质与地球物理研究所
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