Institutional Repository of State Key Laboratory of Lithospheric Evolution
| Extensional magmatism caused by strain partitioning: insights from the mafic dikes hosted in Biesituobie batholith in West Junggar, CAOB | |
| Chen, Yichao1; Liu, Jiahui1; Zhou, Renjie2; Xiao, Wenjiao1,3,4; Zhang, Ji'en4; Zhang, Zhiyong4; Zhang, Qian W. L.1; Li, Zhen M. G.1; Wu, Chunming1 | |
| 2022-08-20 | |
| Source Publication | INTERNATIONAL JOURNAL OF EARTH SCIENCES
 |
| ISSN | 1437-3254 |
| Pages | 17 |
| Abstract | The connection between magmatism and the tectonic environment is essential yet highly debatable. The West Junggar, CAOB, outcropped a swarm of norite-gabbro dikes hosted in the Biesituobie batholith. The dikes are a family of mafic magma consisting of nortite, norite-gabbro, and gabbro with equigranular, porphyritic, and cumulate textures. The mafic dikes represent various chemical compositions due to the magma evolution suggested by the different lithological textures, especially for MgO, CaO, Sr, and Eu, possibly caused by the crystal fractionation. But commonly, they show depleted Nb, Ta, Zr, Hf, Ti, and enriched Ba, U. Geochronology study by LA-ICP-MS gives zircon U-Pb age of 265 +/- 4 Ma, 269 +/- 1 Ma, 270 +/- 2 Ma for the mafic dikes, respectively. The mafic dikes show geochemical similarities with E-MORB type lava with minor subduction affinity. The low fraction on the LREE/HREE indicates that they were generated from a relatively shallow mantle with low pressure. The norite-gabbro dikes and the host batholith suggest a regional extension with crust thining upwelling of the mantle caused by strain partitioning. Regionally, the Permian extensional magmatism is distributed mainly in the "Yumin-Miaoergou axis, " perpendicular to the Darburt fault. The activation of the Darburt fault might cause the partition of regional transpression strain into simple shear along the strike-slip Darburt fault and pure shear perpendicular to the fault. The T-fracture parallel with the maximum principal stress of the pure shear causes crustal thinning and mantle upwelling, generating the extensional magmatism in the "Yumin-Miaoergou axis." This tectonic scenario might be the essential geodynamic background for extensional magmatism, which suggest that local extension might be coordinated with regional transpression, and a unified regional extension is not needed in such a model. |
| Keyword | Extensional magmatism Strain partitioning Geochemistry Geochronology CAOB |
| DOI | 10.1007/s00531-022-02234-w |
| Funding Organization | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Postdoctoral Council ; China Postdoctoral Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Postdoctoral Council ; China Postdoctoral Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Postdoctoral Council ; China Postdoctoral Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Postdoctoral Council ; China Postdoctoral Council |
| WOS Keyword | NW CHINA IMPLICATIONS ; A-TYPE GRANITES ; PALEOZOIC CRUSTAL GROWTH ; VOLCANIC-ROCK SERIES ; SAN-ANDREAS FAULT ; U-PB AGES ; TECTONIC IMPLICATIONS ; NORTH XINJIANG ; TRACE-ELEMENT ; SLAB WINDOW |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[41902231] ; National Natural Science Foundation of China[42172247] ; National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[41730215] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-DQC036] ; Fundamental Research Funds for the Central Universities[E1E40416X2] ; China Postdoctoral Council[2018M631556] |
| Funding Organization | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Postdoctoral Council ; China Postdoctoral Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Postdoctoral Council ; China Postdoctoral Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Postdoctoral Council ; China Postdoctoral Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Postdoctoral Council ; China Postdoctoral Council |
| WOS Research Area | Geology |
| WOS Subject | Geosciences, Multidisciplinary |
| WOS ID | WOS:000842996500002 |
| Publisher | SPRINGER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.iggcas.ac.cn/handle/132A11/108412 |
| Collection | 岩石圈演化国家重点实验室 |
| Corresponding Author | Chen, Yichao |
| Affiliation | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 2.Univ Queensland, Sch Earth & Environm Sci, Brisbane, Qld 4072, Australia 3.Chinese Acad Sci, Xinjiang Res Ctr Mineral Resources, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
| Recommended Citation GB/T 7714 | Chen, Yichao,Liu, Jiahui,Zhou, Renjie,et al. Extensional magmatism caused by strain partitioning: insights from the mafic dikes hosted in Biesituobie batholith in West Junggar, CAOB[J]. INTERNATIONAL JOURNAL OF EARTH SCIENCES,2022:17. |
| APA | Chen, Yichao.,Liu, Jiahui.,Zhou, Renjie.,Xiao, Wenjiao.,Zhang, Ji'en.,...&Wu, Chunming.(2022).Extensional magmatism caused by strain partitioning: insights from the mafic dikes hosted in Biesituobie batholith in West Junggar, CAOB.INTERNATIONAL JOURNAL OF EARTH SCIENCES,17. |
| MLA | Chen, Yichao,et al."Extensional magmatism caused by strain partitioning: insights from the mafic dikes hosted in Biesituobie batholith in West Junggar, CAOB".INTERNATIONAL JOURNAL OF EARTH SCIENCES (2022):17. |
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