伊朗Jandaq变质杂岩变质岩的地球化学特征、构造背景和变质史

IF 1 4区 地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS
Arefeh Heidarianmanesh, Seyed Mohsen Tabatabaei Manesh, Nargess Shirdashtzadeh, Farid Chemale Junior, O. V. Parfenova
{"title":"伊朗Jandaq变质杂岩变质岩的地球化学特征、构造背景和变质史","authors":"Arefeh Heidarianmanesh,&nbsp;Seyed Mohsen Tabatabaei Manesh,&nbsp;Nargess Shirdashtzadeh,&nbsp;Farid Chemale Junior,&nbsp;O. V. Parfenova","doi":"10.1134/S0869591124700371","DOIUrl":null,"url":null,"abstract":"<p>Metabasites within the Jandaq Metamorphic Complex (JMC), Iran, offer valuable insights into the region’s magmatic and metamorphic history. Whole-rock geochemical data (major, trace, and rare earth elements) coupled with Sm-Nd isotopes were used to decipher the protolith origin and tectonic setting of formation of these metabasites. Our results demonstrate a predominantly ortho-amphibolitic nature for the JMC metabasites, with igneous protoliths ranging from basalt to andesite based on geochemical discrimination diagrams (Zr versus MgO and Sm/Nd). They exhibit geochemical affinities closer to enriched mid-oceanic ridge basalts (E-MORB) rather than normal MORB, implying a nascent oceanic basin within an intracontinental extensional setting. Trace element signatures (LILE enrichment, HFSE depletion) suggest a metasomatized subcontinental lithospheric mantle (SCLM) or a metasomatized lithospheric mantle beneath the oceanic crust as the parental magma source. Sm-Nd isotopic data suggest a potential plume source for the protoliths. These rocks were metamorphosed further by at least three metamorphic events: M1 (regional metamorphism, Barrovian-type; 616–687°C, 8–11 kbar), M2 (a brittle deformation event), and a later retrograde metamorphism (M3). These findings provide a comprehensive understanding of the geochemical characteristics, tectonic setting, and metamorphic evolution of JMC metabasites, shedding light on the geological history of the Jandaq region as a Paleo-Tethyan remnant.</p>","PeriodicalId":20026,"journal":{"name":"Petrology","volume":"33 2","pages":"139 - 161"},"PeriodicalIF":1.0000,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Geochemical Characterization, Tectonic Setting, and Metamorphic History of Metabasites from Jandaq Metamorphic Complex, Iran\",\"authors\":\"Arefeh Heidarianmanesh,&nbsp;Seyed Mohsen Tabatabaei Manesh,&nbsp;Nargess Shirdashtzadeh,&nbsp;Farid Chemale Junior,&nbsp;O. V. Parfenova\",\"doi\":\"10.1134/S0869591124700371\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Metabasites within the Jandaq Metamorphic Complex (JMC), Iran, offer valuable insights into the region’s magmatic and metamorphic history. Whole-rock geochemical data (major, trace, and rare earth elements) coupled with Sm-Nd isotopes were used to decipher the protolith origin and tectonic setting of formation of these metabasites. Our results demonstrate a predominantly ortho-amphibolitic nature for the JMC metabasites, with igneous protoliths ranging from basalt to andesite based on geochemical discrimination diagrams (Zr versus MgO and Sm/Nd). They exhibit geochemical affinities closer to enriched mid-oceanic ridge basalts (E-MORB) rather than normal MORB, implying a nascent oceanic basin within an intracontinental extensional setting. Trace element signatures (LILE enrichment, HFSE depletion) suggest a metasomatized subcontinental lithospheric mantle (SCLM) or a metasomatized lithospheric mantle beneath the oceanic crust as the parental magma source. Sm-Nd isotopic data suggest a potential plume source for the protoliths. These rocks were metamorphosed further by at least three metamorphic events: M1 (regional metamorphism, Barrovian-type; 616–687°C, 8–11 kbar), M2 (a brittle deformation event), and a later retrograde metamorphism (M3). These findings provide a comprehensive understanding of the geochemical characteristics, tectonic setting, and metamorphic evolution of JMC metabasites, shedding light on the geological history of the Jandaq region as a Paleo-Tethyan remnant.</p>\",\"PeriodicalId\":20026,\"journal\":{\"name\":\"Petrology\",\"volume\":\"33 2\",\"pages\":\"139 - 161\"},\"PeriodicalIF\":1.0000,\"publicationDate\":\"2025-04-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Petrology\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S0869591124700371\",\"RegionNum\":4,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"GEOCHEMISTRY & GEOPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Petrology","FirstCategoryId":"89","ListUrlMain":"https://link.springer.com/article/10.1134/S0869591124700371","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
引用次数: 0

摘要

伊朗Jandaq变质杂岩(JMC)中的变质岩为了解该地区的岩浆和变质历史提供了有价值的见解。利用全岩地球化学数据(主要元素、痕量元素和稀土元素)和Sm-Nd同位素分析了这些变质岩的原岩成因和形成的构造背景。我们的研究结果表明,JMC变质岩主要为正角闪岩性质,根据地球化学辨别图(Zr与MgO和Sm/Nd),火成岩原岩范围从玄武岩到安山岩。它们的地球化学特征更接近富集的中洋脊玄武岩(E-MORB),而不是普通的中洋脊玄武岩,暗示在陆内伸展环境中存在一个新生的海洋盆地。微量元素特征(LILE富集,HFSE亏缺)表明岩浆源为洋壳下交代的次大陆岩石圈地幔或洋壳下交代岩石圈地幔。Sm-Nd同位素数据提示原岩可能存在羽流源。这些岩石经过至少三个变质事件进一步变质:M1(区域变质,巴罗维亚型;616-687°C, 8-11 kbar), M2(脆性变形事件),以及后来的逆行变质(M3)。这些发现对JMC变质岩的地球化学特征、构造背景和变质演化有了全面的认识,揭示了Jandaq地区作为古特提斯遗迹的地质历史。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Geochemical Characterization, Tectonic Setting, and Metamorphic History of Metabasites from Jandaq Metamorphic Complex, Iran

Metabasites within the Jandaq Metamorphic Complex (JMC), Iran, offer valuable insights into the region’s magmatic and metamorphic history. Whole-rock geochemical data (major, trace, and rare earth elements) coupled with Sm-Nd isotopes were used to decipher the protolith origin and tectonic setting of formation of these metabasites. Our results demonstrate a predominantly ortho-amphibolitic nature for the JMC metabasites, with igneous protoliths ranging from basalt to andesite based on geochemical discrimination diagrams (Zr versus MgO and Sm/Nd). They exhibit geochemical affinities closer to enriched mid-oceanic ridge basalts (E-MORB) rather than normal MORB, implying a nascent oceanic basin within an intracontinental extensional setting. Trace element signatures (LILE enrichment, HFSE depletion) suggest a metasomatized subcontinental lithospheric mantle (SCLM) or a metasomatized lithospheric mantle beneath the oceanic crust as the parental magma source. Sm-Nd isotopic data suggest a potential plume source for the protoliths. These rocks were metamorphosed further by at least three metamorphic events: M1 (regional metamorphism, Barrovian-type; 616–687°C, 8–11 kbar), M2 (a brittle deformation event), and a later retrograde metamorphism (M3). These findings provide a comprehensive understanding of the geochemical characteristics, tectonic setting, and metamorphic evolution of JMC metabasites, shedding light on the geological history of the Jandaq region as a Paleo-Tethyan remnant.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Petrology
Petrology 地学-地球科学综合
CiteScore
2.40
自引率
20.00%
发文量
27
审稿时长
>12 weeks
期刊介绍: Petrology is a journal of magmatic, metamorphic, and experimental petrology, mineralogy, and geochemistry. The journal offers comprehensive information on all multidisciplinary aspects of theoretical, experimental, and applied petrology. By giving special consideration to studies on the petrography of different regions of the former Soviet Union, Petrology provides readers with a unique opportunity to refine their understanding of the geology of the vast territory of the Eurasian continent. The journal welcomes manuscripts from all countries in the English or Russian language.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信