Late Miocene K-rich volcanism in the Eslamieh Peninsula (Saray), NW Iran: Implications for geodynamic evolution of the Turkish–Iranian High Plateau

Post-collisional volcanism in northwestern Iran is represented by the Saray high-K rocks including leucite-bearing under-saturated and leucite-free silica saturated rocks. We report Ar–Ar age data which constrain the age as ca. 11Ma (lateMiocene).Most of clinopyroxene phenocrysts fromthe volcanic ro...

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Autores: Moghadam, H. Shafaii, Ghorbani, G., Khedr, M. Zaki, Fazlnia, N., Chiaradia, M., Eyuboglu, Y., Santosh, M., Galindo Francisco, María Del Carmen, López Martínez, María Nieves, Gourgaud, A., Arai, S.
Formato: artículo
Fecha de publicación:2014
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/35054
Acesso em linha:https://hdl.handle.net/20.500.14352/35054
Access Level:acceso abierto
Palavra-chave:550.4(569.1)
High-K lavas
Geochemistry
Sr–Nd–Pb isotopes
Post-collisional magmatism
Iran
Geoquímica
2503 Geoquímica
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oai_identifier_str oai:docta.ucm.es:20.500.14352/35054
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network_name_str España
repository_id_str
spelling Late Miocene K-rich volcanism in the Eslamieh Peninsula (Saray), NW Iran: Implications for geodynamic evolution of the Turkish–Iranian High PlateauMoghadam, H. ShafaiiGhorbani, G.Khedr, M. ZakiFazlnia, N.Chiaradia, M.Eyuboglu, Y.Santosh, M.Galindo Francisco, María Del CarmenLópez Martínez, María NievesGourgaud, A.Arai, S.550.4(569.1)High-K lavasGeochemistrySr–Nd–Pb isotopesPost-collisional magmatismIranGeoquímica2503 GeoquímicaPost-collisional volcanism in northwestern Iran is represented by the Saray high-K rocks including leucite-bearing under-saturated and leucite-free silica saturated rocks. We report Ar–Ar age data which constrain the age as ca. 11Ma (lateMiocene).Most of clinopyroxene phenocrysts fromthe volcanic rocks have complex oscillatory zoning, with high Ti and Al cores, low Ti and high Almantled clinopyroxenes, grading into lowTi and Al outer rims. All the rocks are highly enriched in incompatible trace elements and have identical Sr–Nd–Pb isotopes. Enrichment in incompatible elements and other geochemical features for the Saray lavas suggest a metasomatized subcontinental lithospheric mantle (SCLM) as the magma source. The negative Nb–Ta–Ti anomalies for the Saray lavas compare with the features of subduction-related magmatism with negligible contamination with ancient crustal components. The highly radiogenic 87Sr/86Sr and 207Pb/204Pb isotopic values of the Saray lavas imply the involvement of slab terrigenous sediments and/or a continental lithosphere. Isotopically, the volcanic rocks define a binary trend, representing 5–8% mixing between the primary mantle and sediment melts. Our melting models suggest residual garnet in the source and are incompatible with partial melting of amphibole and/or phlogopite bearing lherzolites, although the complex geochemical features might indicate the result of mixing between melts produced by different sources or a homogenous melt passing through a compositionally-zoned mantle during multiple stages of partial melting and melt migration. The geochronological, geochemical and isotopic data for the Saray rocks suggest that these Late Miocene magmas were derived from a small degree of partial melting of subduction-metasomatized (subcontinental) lithospheric mantle source in a post-collisional setting.Elsevier Science B. V., AmsterdamUniversidad Complutense de Madrid20142014-01-0120142014-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/35054reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/350542026-06-02T12:44:21Z
dc.title.none.fl_str_mv Late Miocene K-rich volcanism in the Eslamieh Peninsula (Saray), NW Iran: Implications for geodynamic evolution of the Turkish–Iranian High Plateau
title Late Miocene K-rich volcanism in the Eslamieh Peninsula (Saray), NW Iran: Implications for geodynamic evolution of the Turkish–Iranian High Plateau
spellingShingle Late Miocene K-rich volcanism in the Eslamieh Peninsula (Saray), NW Iran: Implications for geodynamic evolution of the Turkish–Iranian High Plateau
Moghadam, H. Shafaii
550.4(569.1)
High-K lavas
Geochemistry
Sr–Nd–Pb isotopes
Post-collisional magmatism
Iran
Geoquímica
2503 Geoquímica
title_short Late Miocene K-rich volcanism in the Eslamieh Peninsula (Saray), NW Iran: Implications for geodynamic evolution of the Turkish–Iranian High Plateau
title_full Late Miocene K-rich volcanism in the Eslamieh Peninsula (Saray), NW Iran: Implications for geodynamic evolution of the Turkish–Iranian High Plateau
title_fullStr Late Miocene K-rich volcanism in the Eslamieh Peninsula (Saray), NW Iran: Implications for geodynamic evolution of the Turkish–Iranian High Plateau
title_full_unstemmed Late Miocene K-rich volcanism in the Eslamieh Peninsula (Saray), NW Iran: Implications for geodynamic evolution of the Turkish–Iranian High Plateau
title_sort Late Miocene K-rich volcanism in the Eslamieh Peninsula (Saray), NW Iran: Implications for geodynamic evolution of the Turkish–Iranian High Plateau
dc.creator.none.fl_str_mv Moghadam, H. Shafaii
Ghorbani, G.
Khedr, M. Zaki
Fazlnia, N.
Chiaradia, M.
Eyuboglu, Y.
Santosh, M.
Galindo Francisco, María Del Carmen
López Martínez, María Nieves
Gourgaud, A.
Arai, S.
author Moghadam, H. Shafaii
author_facet Moghadam, H. Shafaii
Ghorbani, G.
Khedr, M. Zaki
Fazlnia, N.
Chiaradia, M.
Eyuboglu, Y.
Santosh, M.
Galindo Francisco, María Del Carmen
López Martínez, María Nieves
Gourgaud, A.
Arai, S.
author_role author
author2 Ghorbani, G.
Khedr, M. Zaki
Fazlnia, N.
Chiaradia, M.
Eyuboglu, Y.
Santosh, M.
Galindo Francisco, María Del Carmen
López Martínez, María Nieves
Gourgaud, A.
Arai, S.
author2_role author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 550.4(569.1)
High-K lavas
Geochemistry
Sr–Nd–Pb isotopes
Post-collisional magmatism
Iran
Geoquímica
2503 Geoquímica
topic 550.4(569.1)
High-K lavas
Geochemistry
Sr–Nd–Pb isotopes
Post-collisional magmatism
Iran
Geoquímica
2503 Geoquímica
description Post-collisional volcanism in northwestern Iran is represented by the Saray high-K rocks including leucite-bearing under-saturated and leucite-free silica saturated rocks. We report Ar–Ar age data which constrain the age as ca. 11Ma (lateMiocene).Most of clinopyroxene phenocrysts fromthe volcanic rocks have complex oscillatory zoning, with high Ti and Al cores, low Ti and high Almantled clinopyroxenes, grading into lowTi and Al outer rims. All the rocks are highly enriched in incompatible trace elements and have identical Sr–Nd–Pb isotopes. Enrichment in incompatible elements and other geochemical features for the Saray lavas suggest a metasomatized subcontinental lithospheric mantle (SCLM) as the magma source. The negative Nb–Ta–Ti anomalies for the Saray lavas compare with the features of subduction-related magmatism with negligible contamination with ancient crustal components. The highly radiogenic 87Sr/86Sr and 207Pb/204Pb isotopic values of the Saray lavas imply the involvement of slab terrigenous sediments and/or a continental lithosphere. Isotopically, the volcanic rocks define a binary trend, representing 5–8% mixing between the primary mantle and sediment melts. Our melting models suggest residual garnet in the source and are incompatible with partial melting of amphibole and/or phlogopite bearing lherzolites, although the complex geochemical features might indicate the result of mixing between melts produced by different sources or a homogenous melt passing through a compositionally-zoned mantle during multiple stages of partial melting and melt migration. The geochronological, geochemical and isotopic data for the Saray rocks suggest that these Late Miocene magmas were derived from a small degree of partial melting of subduction-metasomatized (subcontinental) lithospheric mantle source in a post-collisional setting.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014-01-01
2014
2014-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/35054
url https://hdl.handle.net/20.500.14352/35054
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier Science B. V., Amsterdam
publisher.none.fl_str_mv Elsevier Science B. V., Amsterdam
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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