Age, petrogenesis, and tectonic implications of the late Permian magmatic rocks in the Middle Gobi volcanoplutonic Belt, Mongolia
文献类型：期刊论文
| 作者 | Ganbat, Ariuntsetseg1,2,3; Tsujimori, Tatsuki2,4; Miao, Laicheng5; Safonova, Inna6,7; Pastor-Galan, Daniel4,8,9; Anaad, Chimedtseren3,10; Aoki, Shogo11,12; Aoki, Kazumasa12; Chimedsuren, Munkhnasan13 |
| 刊名 | ISLAND ARC
 |
| 出版日期 | 2022 |
| 卷号 | 31期号:1页码:24 |
| 关键词 | CAOB Mongol-Okhotsk Belt peraluminous granite U-Pb geochronology Zircon Hf isotope |
| ISSN号 | 1038-4871 |
| DOI | 10.1111/iar.12457 |
| 英文摘要 | The Mongol-Okhotsk Belt, the youngest segment of Central Asian Orogenic Belt, was formed by the evolution and closure of the Mongol-Okhotsk Ocean. The oceanic closure formed two volcanoplutonic belts: Selenge Belt in the north and the Middle Gobi Belt in the south (in present day coordinates). However, the origin and tectonic evolution of the Mongol-Okhotsk Belt in general, and the origin and formation age of the Middle Gobi Belt in particular, remain enigmatic. To better understand the history of the magmatic activity in the Middle Gobi Belt, we conducted geochemical, UPb geochronological, zircon Hf, and whole-rock Nd isotopic analyses of samples from the Mandalgovi volcanoplutonic suite, the major component of the Middle Gobi Belt. Our results show that the plutonic rock consists of similar to 285 Ma gabbro, similar to 265 Ma biotite-granite and similar to 250 Ma hornblende-granodiorite. The volcanic counterpart is represented by a Permian Sahalyn gol rhyolite and similar to 247 Ma Ikh khad andesite. The geochemical compositions of biotite-granite and hornblende-granodiorite indicate that their precursors were metagraywacke and amphibolite, respectively. They are characterized by positive whole-rock epsilon(Nd)(t) and zircon epsilon(Hf)(t) values, indicating juvenile protoliths. The gabbro was derived by partial melting of a metasomatized lithospheric mantle source in a supra-subduction setting. The biotite-granite and Sahalyn gol rhyolite are formed by remelting of sediments in an inter-arc extension setting. Later the hornblende-granite and lkh khad volcanic were emplaced at a volcanic arc formed by the subduction of the Mongol-Okhotsk Ocean. We conclude that the magmatic rocks of the Middle Gobi Belt formed in an active continental margin setting. Considering the consistent distribution of coeval arc-derived magmatic formations along the southern margin of the Mongol-Okhotsk Belt, the oceanic basin was closed in a relatively simultaneous manner. |
| WOS关键词 | ASIAN OROGENIC BELT ; S-TYPE GRANITES ; OKHOTSK OCEAN ; CONTINENTAL-GROWTH ; U-PB ; PERALUMINOUS GRANITOIDS ; CRUSTAL EVOLUTION ; RIDGE SUBDUCTION ; VOLCANIC-ROCKS ; LU-HF |
| 资助项目 | Japan Society for the Promotion of Science[JP18H01299] ; Japan Society for the Promotion of Science[JP19K04043] ; Japan Society for the Promotion of Science[JP21H01174] ; National Natural Science Foundation of China[41772230] ; Russian Science Foundation[21-77-20022] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000864738600001 |
| 出版者 | WILEY |
| 资助机构 | Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Russian Science Foundation ; Russian Science Foundation ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Russian Science Foundation ; Russian Science Foundation ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Russian Science Foundation ; Russian Science Foundation ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Russian Science Foundation ; Russian Science Foundation |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/107802]  |
| 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 | Ganbat, Ariuntsetseg |
| 作者单位 | 1.Univ Hong Kong, Dept Earth Sci, Hong Kong, Peoples R China 2.Tohoku Univ, Grad Sch Sci, Dept Earth Sci, Sendai, Miyagi, Japan 3.Mongolian Univ Sci & Technol, Geosci Ctr, Ulaanbaatar, Mongolia 4.Tohoku Univ, Ctr Northeast Asian Studies, Sendai, Miyagi, Japan 5.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China 6.Novosibirsk State Univ, Novosibirsk, Russia 7.Sobolev Inst Geol & Mineral, Novosibirsk, Russia 8.Tohoku Univ, Frontier Res Inst Interdisciplinary Sci, Sendai, Miyagi, Japan 9.Univ Granada, Dept Geodynam, Granada, Spain 10.Nat Hist Museum Mongolia, Ulaanbaatar, Mongolia |
| 推荐引用方式 GB/T 7714 | Ganbat, Ariuntsetseg,Tsujimori, Tatsuki,Miao, Laicheng,et al. Age, petrogenesis, and tectonic implications of the late Permian magmatic rocks in the Middle Gobi volcanoplutonic Belt, Mongolia[J]. ISLAND ARC,2022,31(1):24. |
| APA | Ganbat, Ariuntsetseg.,Tsujimori, Tatsuki.,Miao, Laicheng.,Safonova, Inna.,Pastor-Galan, Daniel.,...&Chimedsuren, Munkhnasan.(2022).Age, petrogenesis, and tectonic implications of the late Permian magmatic rocks in the Middle Gobi volcanoplutonic Belt, Mongolia.ISLAND ARC,31(1),24. |
| MLA | Ganbat, Ariuntsetseg,et al."Age, petrogenesis, and tectonic implications of the late Permian magmatic rocks in the Middle Gobi volcanoplutonic Belt, Mongolia".ISLAND ARC 31.1(2022):24. |
入库方式： OAI收割
来源：地质与地球物理研究所
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