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Geochemistry and Petrogenesis of Shoshonitic Dyke Swarm in the Northeast of Meshkinshahr, NW Iran
Fadaeian, Mohammad1; Jahangiri, Ahmad2; Ao, Songjian3; Kamali, Amin Allah4; Xiao, Wenjiao3
2022-03-01
Source PublicationMINERALS
Volume12Issue:3Pages:27
AbstractThe study area is located in Ardabil province in the northeast of Meshkinshahr city. More than 200 small and large Eocene-age dykes form outcrops in this area. Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) U-Pb zircon analyses yield a consistent age of 44.3 +/- 1.8 Ma for the dyke swarms. These dykes include tephritic, andesitic and basaltic compositions, and show enrichment in LREEs (relative to HREEs) and are characterized by enrichment in LILEs and depletion in HFSEs. Petrological observations, along with major, rare earth and trace elements geochemistry, suggest that the dykes have a shoshonitic signature. All the rocks are highly enriched in incompatible trace elements and have variable Sr-Nd isotopes. Enrichment in incompatible elements and other geochemical features for the dyke swarm rocks suggest that a metasomatized subcontinental lithospheric mantle is the magma source. The negative Nb-Ta-Ti anomalies in the rocks are comparable with the features of subduction-related magmatism and contamination with ancient crustal components. The radiogenic Sr-87/Sr-86 isotopic values of the rocks imply the involvement of slab terrigenous sediments and/or a continental lithosphere. Isotopically, the volcanic rocks exhibit a binary trend, representing 1-5% mixing between the primary mantle and sediment melts. Our melting models suggest that there are residual garnet + spinel in the source, which are incompatible with the partial melting of amphibole- and/or phlogopite-bearing lherzolites. The geochronological, geochemical and isotopic data for the northeast Meshkinshahr dyke swarms suggest that these Late Eocene magmas were derived from a small degree of partial melting of a subduction-metasomatized lithospheric mantle source in a post-collisional setting.
Keyworddyke swarms geochemistry shoshonite Sr-Nd isotope U-Pb zircon dating post collisional magmatism Iran
DOI10.3390/min12030309
Funding OrganizationNational Natural Science Foundation 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 Natural Science Foundation 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 Natural Science Foundation 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 Natural Science Foundation of China
WOS KeywordALKALINE VOLCANIC-ROCKS ; EAST PACIFIC RISE ; TRACE-ELEMENT ; WESTERN ANATOLIA ; CALC-ALKALINE ; GEODYNAMIC EVOLUTION ; GEOLOGICAL SAMPLES ; TECTONIC EVOLUTION ; POTASSIC VOLCANISM ; BENEATH HAWAII
Language英语
Funding ProjectNational Natural Science Foundation of China[41822204] ; National Natural Science Foundation of China[41888101]
Funding OrganizationNational Natural Science Foundation 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 Natural Science Foundation 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 Natural Science Foundation 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 Natural Science Foundation of China
WOS Research AreaGeochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing
WOS SubjectGeochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing
WOS IDWOS:000774141700001
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105042
Collection岩石圈演化国家重点实验室
Corresponding AuthorAo, Songjian
Affiliation1.Payame Noor Univ, Dept Geol, Tehran 19395, Iran
2.Univ Tabriz, Dept Geol, Tabriz 51664, Iran
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
4.Res Ctr Conservat Culture Rel RCCCR, Res Inst Cultural Heritage & Tourism, Tehran 11456, Iran
Corresponding Author AffilicationState Key Laboratory of Lithospheric Evolution
Recommended Citation
GB/T 7714
Fadaeian, Mohammad,Jahangiri, Ahmad,Ao, Songjian,et al. Geochemistry and Petrogenesis of Shoshonitic Dyke Swarm in the Northeast of Meshkinshahr, NW Iran[J]. MINERALS,2022,12(3):27.
APA Fadaeian, Mohammad,Jahangiri, Ahmad,Ao, Songjian,Kamali, Amin Allah,&Xiao, Wenjiao.(2022).Geochemistry and Petrogenesis of Shoshonitic Dyke Swarm in the Northeast of Meshkinshahr, NW Iran.MINERALS,12(3),27.
MLA Fadaeian, Mohammad,et al."Geochemistry and Petrogenesis of Shoshonitic Dyke Swarm in the Northeast of Meshkinshahr, NW Iran".MINERALS 12.3(2022):27.
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