Institutional Repository of Key Laboratory of Mineral Resources, Chinese Academy of Sciences
| Age, petrogenesis, and tectonic implications of the late Permian magmatic rocks in the Middle Gobi volcanoplutonic Belt, Mongolia | |
| 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 | |
| 2022 | |
| Source Publication | ISLAND ARC
 |
| ISSN | 1038-4871 |
| Volume | 31Issue:1Pages:24 |
| Abstract | 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. |
| Keyword | CAOB Mongol-Okhotsk Belt peraluminous granite U-Pb geochronology Zircon Hf isotope |
| DOI | 10.1111/iar.12457 |
| Funding Organization | 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 |
| WOS Keyword | ASIAN OROGENIC BELT ; S-TYPE GRANITES ; OKHOTSK OCEAN ; CONTINENTAL-GROWTH ; U-PB ; PERALUMINOUS GRANITOIDS ; CRUSTAL EVOLUTION ; RIDGE SUBDUCTION ; VOLCANIC-ROCKS ; LU-HF |
| Language | 英语 |
| Funding Project | 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] |
| Funding Organization | 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 |
| WOS Research Area | Geology |
| WOS Subject | Geosciences, Multidisciplinary |
| WOS ID | WOS:000864738600001 |
| Publisher | WILEY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.iggcas.ac.cn/handle/132A11/107802 |
| Collection | 矿产资源研究院重点实验室 |
| Corresponding Author | Ganbat, Ariuntsetseg |
| Affiliation | 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 11.Akita Univ, Grad Sch Int Resource Sci, Akita, Japan 12.Okayama Univ Sci, Ctr Fundamental Educ, Okayama, Japan 13.Geoerin LLC, Ulaanbaatar, Mongolia |
| Recommended Citation 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. |
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