Tungsten enrichment processes in peraluminous granites of the Chinese Altai
文献类型：期刊论文
| 作者 | Chen, Zhi-Wei1,2,3; Yuan, Chao1,2; Huang, Zong-Ying1,2; Jiang, Ying-De1,2; Li, Peng-Fei1,2; Xiao, Ming5; Wang, Xin-Yu1,2; Zhang, Yun-Ying4; Wang, Qiang1,2 |
| 刊名 | ORE GEOLOGY REVIEWS
 |
| 出版日期 | 2024-09-01 |
| 卷号 | 172页码:19 |
| 关键词 | CAOB Altai Tungsten enrichment Peraluminous granites Hydrothermal alteration Crustal reworking |
| ISSN号 | 0169-1368 |
| DOI | 10.1016/j.oregeorev.2024.106211 |
| 英文摘要 | To evaluate the processes facilitating the W enrichment in peraluminous granites, three peraluminous granitic intrusions in the Chinese Altai have been investigated. The Yilaike pluton and Tielieke batholith are dominated by biotite granite with subordinate muscovite granite, while the Shangkelan pluton is of A-type granite characteristics and comprised mainly of muscovite granite and topaz-albite granite. The Yilaike pluton, Tielieke batholith and Shangkelan pluton were generated in Late Ordovician (444-447 Ma), Early Devonian (402-406 Ma) and Late Triassic (204 Ma), respectively and possess high-K calc-alkaline and peraluminous composition as well as low oxygen fugacity. All the intrusions underwent fractional crystallization and hydrothermal processes of various extents, and the Shangkelan pluton, among others, is the most striking in hydrothermal alteration. The Yilaike and Tielieke granites have similar epsilon Nd-(t) (-4.9 to + 0.3 and -2.4 to + 0.7, respectively) and whole-rock delta O-18 (+11.6 to + 15.3 parts per thousand and + 10.4 to + 13.2 parts per thousand, respectively) values, consistent with an origin of the Early Paleozoic metasedimentary rocks in the Chinese Altai. The Shangkelan granites possess incompatible element ratios and trace element variation trends different from those of the Yilaike and Tielieke granites, and their relatively radiogenic epsilon Nd-(t) (-0.1 to + 0.4) values, low delta O-18 (+10.1 to + 12.0 parts per thousand) ratios and F-rich muscovite indicate that the Shangkelan granites were probably formed by partial melting of a biotite-rich igneous protolith. The biotite granite of the Yilaike pluton and Tielieke batholith contains low W (0.8-1.2 ppm) equivalent to that of the Early Paleozoic metasedimentary rocks, suggesting a limited efficiency for W transport from the source into partial melts. A pronounced rise of W content in the Yilaike and Tielieke granites (up to 11 and 35 ppm, respectively) occurred during the evolution towards muscovite granite, indicating the contribution of magmatic and hydrothermal processes. The Mesozoic Shangkelan pluton contains the highest W (up to 235 ppm) among these intrusions. The most striking W enrichment occurred in a pseudo-greisen stage characterized by formation of F-rich Li muscovite, which reflects the effect of hydrothermal alteration. Meanwhile, the lowest W concentration (ca. 8 ppm) of the Shangkelan pluton is remarkably higher than that of the Early Paleozoic metasedimentary rocks, implying a relatively high initial W content in its igneous protolith that probably formed in previous crustal reworking. The study demonstrates that repetitively melting of an immature crustal source can significantly increase the W abundance in the resultant peraluminous granites. |
| WOS研究方向 | Geology ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:001316919600001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/81146]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 通讯作者 | Yuan, Chao |
| 作者单位 | 1.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, State Key Lab Isotope Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Peoples R China 5.Univ Hong Kong, Dept Earth Sci, Pokfulam Rd, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Zhi-Wei,Yuan, Chao,Huang, Zong-Ying,et al. Tungsten enrichment processes in peraluminous granites of the Chinese Altai[J]. ORE GEOLOGY REVIEWS,2024,172:19. |
| APA | Chen, Zhi-Wei.,Yuan, Chao.,Huang, Zong-Ying.,Jiang, Ying-De.,Li, Peng-Fei.,...&Wang, Qiang.(2024).Tungsten enrichment processes in peraluminous granites of the Chinese Altai.ORE GEOLOGY REVIEWS,172,19. |
| MLA | Chen, Zhi-Wei,et al."Tungsten enrichment processes in peraluminous granites of the Chinese Altai".ORE GEOLOGY REVIEWS 172(2024):19. |
入库方式： OAI收割
来源：广州地球化学研究所
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