Metallogenic age and metallogenic dynamic setting of the Boziguoer super-large rare-rare earth metal deposit in Xinjiang: Insights from monazite U-Th-Pb dating and graphite Laser Raman spectroscopy
文献类型：期刊论文
| 作者 | Xie MingCai1,2; Han ChunMing2; Fan HongRui2; Yang KuiFeng2; Li XingHui2; She HaiDong1,2; Liang GaiZhong1,2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2023-10-01 |
| 卷号 | 39期号:10页码:2927-2950 |
| ISSN号 | 1000-0569 |
| 关键词 | Boziguoer Alkaline rock Monazite U-Th-Pb dating Graphite Raman spectroscopy Mantle plume Northern margin of Tarim Craton |
| DOI | 10.18654/1000-0569/2023.10.05 |
| 英文摘要 | The Boziguoer alkaline rock -type Nb-Ta-Rb-Zr-REE deposit is located in the junction area of the northern margin of the Tarim Craton and the Southern Tianshan Orogenic Belt. It is the largest alkaline rock -type rare metal -rare earth element composite deposit discovered in the alkaline rock belt on the northern margin of Tarim in recent years. In this paper, studies on the mineralization age of monazite and magmatic formation conditions of crystalline graphite inclusions in ore -bearing rock bodies, together with the whole rock composition of ore -bearing alkaline rocks, are conducted to reveal the petrogeochemical characteristics, crystalline graphite indications for rock/mineral formation, rare earth element mineralization age and mineralization dynamics background of the Boziguoer alkaline rock -type rare metal -rare earth element deposit, and further to summarize the regional mineralization indication significance. The results show that the Boziguoer alkaline rocks are characterized by rich alkaline dark minerals ( arfvedsonite and aegirine), mainly syenite in lithology, with high total rare earth content, enriched LREEs and HFSEs ( Nb, Ta, Zr, Hf, Th, U), depleted HREEs and LILEs such as Ba and Sr, showing a strong negative Eu anomaly. Through the study of crystalline graphite, it was found that the Raman spectrum peaks of graphite in different lithofacies groups are similar, showing a high degree of crystallization. However, as magmatic evolution progresses from fine-grained to coarse-grained/pegmatite stages, the disorder of graphite increases, which may be related to the increase in radiation due to the increase in radioactive element -containing minerals such as pyrochlore and zircon. The estimated formation temperature of graphite is between 700-800 degrees C, and its formation age is earlier than that of its alkaline magma, indicating that the early stage of alkaline magma was reduced and later tended to oxidize. Monazite LA-ICP-MS U-Th-Pb results show that the age of the Boziguoer rare earth elements mineralization is about 280Ma. Combined with previous zircon U-Pb ages, it can be indicated that the time of the Boziguoer alkaline magmatic activity is from similar to 290Ma to 280Ma, lasting at least 10Myr. Further research found that in terms of time and space, the formation of the alkaline rock belt where Boziguoer ore -bearing alkaline rocks are located is related to the Tarim mantle plume, whose emplacement induced partial melting of the lithospheric mantle enriched in rare metal-rare earth elements and volatile components by previous subduction material exchange to form the parent magma of the ore-forming element-rich alkaline rocks. Subsequently, it was enriched into ore during the late magmatic evolution. |
| WOS关键词 | LARGE IGNEOUS PROVINCE ; A-TYPE GRANITES ; SOUTH TIANSHAN OROGEN ; PALEOZOIC TECTONIC EVOLUTION ; MAFIC-ULTRAMAFIC INTRUSIONS ; OCEAN PLATE STRATIGRAPHY ; TARIM BLOCK IMPLICATIONS ; NW CHINA ; TIEN-SHAN ; CONTINENTAL GROWTH |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:001085199300005 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/110705]  |
| 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 | Han ChunMing |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xie MingCai,Han ChunMing,Fan HongRui,et al. Metallogenic age and metallogenic dynamic setting of the Boziguoer super-large rare-rare earth metal deposit in Xinjiang: Insights from monazite U-Th-Pb dating and graphite Laser Raman spectroscopy[J]. ACTA PETROLOGICA SINICA,2023,39(10):2927-2950. |
| APA | Xie MingCai.,Han ChunMing.,Fan HongRui.,Yang KuiFeng.,Li XingHui.,...&Liang GaiZhong.(2023).Metallogenic age and metallogenic dynamic setting of the Boziguoer super-large rare-rare earth metal deposit in Xinjiang: Insights from monazite U-Th-Pb dating and graphite Laser Raman spectroscopy.ACTA PETROLOGICA SINICA,39(10),2927-2950. |
| MLA | Xie MingCai,et al."Metallogenic age and metallogenic dynamic setting of the Boziguoer super-large rare-rare earth metal deposit in Xinjiang: Insights from monazite U-Th-Pb dating and graphite Laser Raman spectroscopy".ACTA PETROLOGICA SINICA 39.10(2023):2927-2950. |
入库方式： OAI收割
来源：地质与地球物理研究所
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