Discovery of 1.79Ga dacite porphyry in the Taiyueshan Mts: Constraints on the genesis of the southern rift system in the North China Craton
文献类型：期刊论文
| 作者 | Fan YuHong1,2; Zhu XiYan1; Duan QingSong2,3; Ma JianFeng2,4; Jia ChaoYuan1,2; Liu ShuQi1,5; Zhao TaiPing4
|
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2024-04-01 |
| 卷号 | 40期号:4页码:1327-1342 |
| 关键词 | Dacite porphyry Xiong'er volcanic-intrusive rocks Trigeminal rift Taiyueshan Mts North China Craton |
| ISSN号 | 1000-0569 |
| DOI | 10.18654/1000-0569/2024.04.17 |
| 英文摘要 | The volcanic rocks of the Xiong'er Group mainly distribute in the southern North China Craton (NCC), and the main eruption peak time is ca. 1.75 similar to 1.80Ga. As a distinctive large-scale magmatic activity of the Earth's middle age in the NCC, its formation time, temporal and spatial distribution and geodynamic background is still controversial, that hinders further research of tectonic evolution of the NCC during the Early Mesoproterozoic. In this study, Mesoproterozoic dacite porphyry is distinguished in the Taiyueshan Mts in central NCC. It intrudes into the surrounding Paleoproterozoic gneissic granitoids with weak metamorphism and deformation. The SHRIMP and LA-ICP-MS zircon U-Pb age of the dacite porphyry is ca. 1.79Ga, which is consistent with the formation time of the Xiong'er volcanic rocks. 90% zircon grains show two age peaks of similar to 1.92Ga and similar to 2.16Ga, which are speculated to be captured from surrounding rocks. The dacites belong to shoshonite series with SiO2 content from 65.12% to 66.11%, alkali content (K2O+Na2O) from 6.85% to 7.28%, A/CNK ratios of 0.91 similar to 1.05, and Na2O/K2O ratios of 0.48 similar to 0.54. They have a high content of REE with depletion in HFSE such as Nb, Ta, Zr and Hf, and enrichment in LILE such as Rb, Ba, and La, which is completely consistent with the geochemical characteristics of Xiong'er dacite-rhyolite porphyry in the southern part of NCC. Currently, more scholars believe that the Xiong'er Group was formed in a trigeminal rift system, indicating the background of within-plate extension. This dacite porphyry connects the Xiong'er Group volcanic rock series in the Zhongtiaoshan area with the Hangaoshan Group and Xiaoliangling volcanic rock series in the Luliang area. They complete the northern branch of the Xiong'er trigeminal rift system, recording the initial Mesoproterozoic rifting in the central part of the NCC. |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001240058800017 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/78348]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Zhu XiYan |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China 5.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan YuHong,Zhu XiYan,Duan QingSong,et al. Discovery of 1.79Ga dacite porphyry in the Taiyueshan Mts: Constraints on the genesis of the southern rift system in the North China Craton[J]. ACTA PETROLOGICA SINICA,2024,40(4):1327-1342. |
| APA | Fan YuHong.,Zhu XiYan.,Duan QingSong.,Ma JianFeng.,Jia ChaoYuan.,...&Zhao TaiPing.(2024).Discovery of 1.79Ga dacite porphyry in the Taiyueshan Mts: Constraints on the genesis of the southern rift system in the North China Craton.ACTA PETROLOGICA SINICA,40(4),1327-1342. |
| MLA | Fan YuHong,et al."Discovery of 1.79Ga dacite porphyry in the Taiyueshan Mts: Constraints on the genesis of the southern rift system in the North China Craton".ACTA PETROLOGICA SINICA 40.4(2024):1327-1342. |
入库方式： OAI收割
来源：广州地球化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。