Hydrothermal circulation at 1.8 Ga in the Kiruna area, northern Sweden, as revealed by apatite geochemical systematics
文献类型：期刊论文
| 作者 | Yan, Shengchao1,3; Wan, Bo1; Andersson, Ulf B.2 |
| 刊名 | PRECAMBRIAN RESEARCH
 |
| 出版日期 | 2023-09-01 |
| 卷号 | 395页码:12 |
| 关键词 | Sweden Kiruna -type IOA Apatite Hydrothermal event Rare earth elements |
| ISSN号 | 0301-9268 |
| DOI | 10.1016/j.precamres.2023.107151 |
| 英文摘要 | The Kiruna area in northern Sweden hosts the classic Kiruna iron-oxide-apatite (IOA) deposit. The area has experienced complex tectonic processes, including basin formation, inversion, and hydraulic fracturing events from -1.9 Ga and possibly down to -1.5 Ga. However, the nature, timing and links of hydrothermal events related to this tectono-thermal evolution are unclear, impairing our full understanding of IOA formation processes. Here, we use multiple analytical methods to study apatite from the Kiirunavaara orebody. Electron microscopy, cathodoluminescence images, and rare earth element contents of the studied apatite indicate alteration by hydrothermal fluids. U-Pb Tera-Wasserburg lower intercept age of the altered apatite is 1800 & PLUSMN; 36 Ma, indicating a contemporaneous hydrothermal event in the central Kiruna area during coeval basin inversion. Sr isotopes obtained in these altered apatites, ranging from 0.709 to 0.713, may represent intermediate Sr isotope values between primary apatite and secondary fluid resetting. The relatively high but scattered 87Sr/86Sr ratios suggest that country rocks of the IOA deposits and other regional intermediate-felsic igneous rocks with old or enriched components are most likely the source of the fluids. Previous studies have revealed two hydrothermal events in the IOA ores at roughly 1.73 Ga and 1.63 Ga. Thus, fluids sourced from the host rocks of the regional IOA deposits and regional granitoids have circulated episodically at 1.80 Ga, 1.73 Ga, 1.63 Ga and possibly 1.5 Ga in the Kiruna area and have partly redistributed rare earth elements formed during the primary 1.88 Ga IOA formation event. |
| WOS关键词 | ISOTOPE SYSTEMATICS ; MAGNETITE ORES ; PB SYSTEMATICS ; IOCG DEPOSITS ; IRON-ORES ; MINERALIZATION ; NORRBOTTEN ; EVOLUTION ; ZIRCON ; AGE |
| 资助项目 | National Natural Science Foundation of China[41888101] ; National Key R amp; D Program of China[2017YFA0708400] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001048764600001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R amp; D Program of China ; National Key R amp; D Program of China ; National Key R amp; D Program of China ; National Key R amp; D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R amp; D Program of China ; National Key R amp; D Program of China ; National Key R amp; D Program of China ; National Key R amp; D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R amp; D Program of China ; National Key R amp; D Program of China ; National Key R amp; D Program of China ; National Key R amp; D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R amp; D Program of China ; National Key R amp; D Program of China ; National Key R amp; D Program of China ; National Key R amp; D Program of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/111386]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Wan, Bo |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China 2.Luossavaara Kiirunavaara AB, SE-98186 Kiruna, Sweden 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Shengchao,Wan, Bo,Andersson, Ulf B.. Hydrothermal circulation at 1.8 Ga in the Kiruna area, northern Sweden, as revealed by apatite geochemical systematics[J]. PRECAMBRIAN RESEARCH,2023,395:12. |
| APA | Yan, Shengchao,Wan, Bo,&Andersson, Ulf B..(2023).Hydrothermal circulation at 1.8 Ga in the Kiruna area, northern Sweden, as revealed by apatite geochemical systematics.PRECAMBRIAN RESEARCH,395,12. |
| MLA | Yan, Shengchao,et al."Hydrothermal circulation at 1.8 Ga in the Kiruna area, northern Sweden, as revealed by apatite geochemical systematics".PRECAMBRIAN RESEARCH 395(2023):12. |
入库方式： OAI收割
来源：地质与地球物理研究所
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