Strontium and neodymium isotopic evidence in the identification of a Carboniferous intracontinental rift at northern Iran
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/28838 |
Resumo: | The Tuyeh-Darvar intrusion (Eastern Alborz zone, northern Iran) has a Carboniferous age and comprises metaluminous, ferroan and alkalic monzonites and monzodiorites. Strontium and neodymium isotopic data - obtained at the UA in the scope of a post-graduate internship - had a major role in the characterization of this intrusion. The whole set of petrographic, geochemical and isotopic evidence shows that the Tuyeh-Darvar rocks may be classified as A-type granitoids (“A” stands for both “alkaline” and “anorogenic”). The initial 87 Sr/86Sr ratios of the studied rocks range from 0.70562 to 0.70678, whilst the initial ƐNd values vary between -1.1 and -1.5. These compositions plot in the an area of the Sr-Nd isotopic correlation diagram where the fields of ocean island basalts and continental basalts overlap and also relatively close to the composition of enriched mantle I (EM I) component. As such, the Tuyeh-Darvar granitoids seem to derive from magmas resulting from melting in enriched asthenospheric mantle below an intracontinental rift existing at the Alborz block in the Carboniferous times |
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Strontium and neodymium isotopic evidence in the identification of a Carboniferous intracontinental rift at northern IranTuyeh-Darvar intrusionEastern Alborz zoneA-type granitoidsSr and Nd isotopesenriched asthenospheric mantleThe Tuyeh-Darvar intrusion (Eastern Alborz zone, northern Iran) has a Carboniferous age and comprises metaluminous, ferroan and alkalic monzonites and monzodiorites. Strontium and neodymium isotopic data - obtained at the UA in the scope of a post-graduate internship - had a major role in the characterization of this intrusion. The whole set of petrographic, geochemical and isotopic evidence shows that the Tuyeh-Darvar rocks may be classified as A-type granitoids (“A” stands for both “alkaline” and “anorogenic”). The initial 87 Sr/86Sr ratios of the studied rocks range from 0.70562 to 0.70678, whilst the initial ƐNd values vary between -1.1 and -1.5. These compositions plot in the an area of the Sr-Nd isotopic correlation diagram where the fields of ocean island basalts and continental basalts overlap and also relatively close to the composition of enriched mantle I (EM I) component. As such, the Tuyeh-Darvar granitoids seem to derive from magmas resulting from melting in enriched asthenospheric mantle below an intracontinental rift existing at the Alborz block in the Carboniferous timesUniversidade de Aveiro2019-01-01T00:00:00Z2019-01-01T00:00:00Z2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/28838eng2182-9357Naderi, A.Santos, José FranciscoRibeiro, Sara MonteiroMoghadam, H.S.Rocha, Fernando Joaquiminfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T11:55:47Zoai:ria.ua.pt:10773/28838Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:01:17.339385Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Strontium and neodymium isotopic evidence in the identification of a Carboniferous intracontinental rift at northern Iran |
title |
Strontium and neodymium isotopic evidence in the identification of a Carboniferous intracontinental rift at northern Iran |
spellingShingle |
Strontium and neodymium isotopic evidence in the identification of a Carboniferous intracontinental rift at northern Iran Naderi, A. Tuyeh-Darvar intrusion Eastern Alborz zone A-type granitoids Sr and Nd isotopes enriched asthenospheric mantle |
title_short |
Strontium and neodymium isotopic evidence in the identification of a Carboniferous intracontinental rift at northern Iran |
title_full |
Strontium and neodymium isotopic evidence in the identification of a Carboniferous intracontinental rift at northern Iran |
title_fullStr |
Strontium and neodymium isotopic evidence in the identification of a Carboniferous intracontinental rift at northern Iran |
title_full_unstemmed |
Strontium and neodymium isotopic evidence in the identification of a Carboniferous intracontinental rift at northern Iran |
title_sort |
Strontium and neodymium isotopic evidence in the identification of a Carboniferous intracontinental rift at northern Iran |
author |
Naderi, A. |
author_facet |
Naderi, A. Santos, José Francisco Ribeiro, Sara Monteiro Moghadam, H.S. Rocha, Fernando Joaquim |
author_role |
author |
author2 |
Santos, José Francisco Ribeiro, Sara Monteiro Moghadam, H.S. Rocha, Fernando Joaquim |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Naderi, A. Santos, José Francisco Ribeiro, Sara Monteiro Moghadam, H.S. Rocha, Fernando Joaquim |
dc.subject.por.fl_str_mv |
Tuyeh-Darvar intrusion Eastern Alborz zone A-type granitoids Sr and Nd isotopes enriched asthenospheric mantle |
topic |
Tuyeh-Darvar intrusion Eastern Alborz zone A-type granitoids Sr and Nd isotopes enriched asthenospheric mantle |
description |
The Tuyeh-Darvar intrusion (Eastern Alborz zone, northern Iran) has a Carboniferous age and comprises metaluminous, ferroan and alkalic monzonites and monzodiorites. Strontium and neodymium isotopic data - obtained at the UA in the scope of a post-graduate internship - had a major role in the characterization of this intrusion. The whole set of petrographic, geochemical and isotopic evidence shows that the Tuyeh-Darvar rocks may be classified as A-type granitoids (“A” stands for both “alkaline” and “anorogenic”). The initial 87 Sr/86Sr ratios of the studied rocks range from 0.70562 to 0.70678, whilst the initial ƐNd values vary between -1.1 and -1.5. These compositions plot in the an area of the Sr-Nd isotopic correlation diagram where the fields of ocean island basalts and continental basalts overlap and also relatively close to the composition of enriched mantle I (EM I) component. As such, the Tuyeh-Darvar granitoids seem to derive from magmas resulting from melting in enriched asthenospheric mantle below an intracontinental rift existing at the Alborz block in the Carboniferous times |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01T00:00:00Z 2019-01-01T00:00:00Z 2019 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10773/28838 |
url |
http://hdl.handle.net/10773/28838 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2182-9357 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de Aveiro |
publisher.none.fl_str_mv |
Universidade de Aveiro |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799137668775280640 |