Zircon U-Pb geochronology and emplacement history of intrusive rocks in the Ardestan section, central Iran

The Urumieh-Dokhtar Magmatic Arc (UDMA) is part of the Alpine-Himalayan orogenic belt and interpreted to be a subduction-related Andean-type magmatic arc. Along this belt, Eocene volcanics and some gabbroic to granitic bodies crop out. The main rock types of the studied intrusion are granite, granod...

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Detalles Bibliográficos
Autores: Sarjoughian, F., Kananian, A.
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:171193
Acceso en línea:https://ddd.uab.cat/record/171193
https://dx.doi.org/urn:doi:10.1344/GeologicaActa2017.15.1.3
Access Level:acceso abierto
Palabra clave:Zircon
Geochronology
Ardestan
Urumieh-dokhtar magmatic arc belt
Iran
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spelling Zircon U-Pb geochronology and emplacement history of intrusive rocks in the Ardestan section, central IranSarjoughian, F.Kananian, A.ZirconGeochronologyArdestanUrumieh-dokhtar magmatic arc beltIranThe Urumieh-Dokhtar Magmatic Arc (UDMA) is part of the Alpine-Himalayan orogenic belt and interpreted to be a subduction-related Andean-type magmatic arc. Along this belt, Eocene volcanics and some gabbroic to granitic bodies crop out. The main rock types of the studied intrusion are granite, granodiorite, and diorite. They have geochemical features typical of magnesian, calc-alkaline, metaluminous to slightly peraluminous granites and I-type intrusive rock that have a strong enrichment in Large-Ion Lithophile (LIL) elements (e.g. Rb, Ba, Sr), and a depletion in High Field Strength (HFS) elements (e.g. Nb, Ti, P), typical of subduction-related magmas. Zircon U-Pb dating was applied to determine the emplacement ages of the different intrusions in the Ardestan area. Among them the Kuh-e Dom diorite is 53.9±0.4Ma old; the Kuh-e Dom granodiorite is 51.10±0.4Ma old; the Mehrabad granodiorite is 36.8±0.5Ma old, the Nasrand granodiorite is 36.5±0.5Ma old, the Zafarghand granodiorite is 24.6±1.0Ma old, and the Feshark granodiorite is 20.5±0.8Ma old. These results delineate more accurately the magmatic evolution related to the Neotethyan subduction from the Lower Eocene to Lower Miocene, and the subsequent Zagros orogeny that resulted from the Arabia-Eurasia collision. The emplacement of these intrusive rocks inside the UDMA, which has a close relationship with the collisional orogeny, is transitional from a subduction-related setting to post-collisional setting in the Ardestan area. 22017-01-0120172017-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/171193https://dx.doi.org/urn:doi:10.1344/GeologicaActa2017.15.1.3reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria.https://creativecommons.org/licenses/by-sa/3.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:1711932026-06-06T12:50:31Z
dc.title.none.fl_str_mv Zircon U-Pb geochronology and emplacement history of intrusive rocks in the Ardestan section, central Iran
title Zircon U-Pb geochronology and emplacement history of intrusive rocks in the Ardestan section, central Iran
spellingShingle Zircon U-Pb geochronology and emplacement history of intrusive rocks in the Ardestan section, central Iran
Sarjoughian, F.
Zircon
Geochronology
Ardestan
Urumieh-dokhtar magmatic arc belt
Iran
title_short Zircon U-Pb geochronology and emplacement history of intrusive rocks in the Ardestan section, central Iran
title_full Zircon U-Pb geochronology and emplacement history of intrusive rocks in the Ardestan section, central Iran
title_fullStr Zircon U-Pb geochronology and emplacement history of intrusive rocks in the Ardestan section, central Iran
title_full_unstemmed Zircon U-Pb geochronology and emplacement history of intrusive rocks in the Ardestan section, central Iran
title_sort Zircon U-Pb geochronology and emplacement history of intrusive rocks in the Ardestan section, central Iran
dc.creator.none.fl_str_mv Sarjoughian, F.
Kananian, A.
author Sarjoughian, F.
author_facet Sarjoughian, F.
Kananian, A.
author_role author
author2 Kananian, A.
author2_role author
dc.subject.none.fl_str_mv Zircon
Geochronology
Ardestan
Urumieh-dokhtar magmatic arc belt
Iran
topic Zircon
Geochronology
Ardestan
Urumieh-dokhtar magmatic arc belt
Iran
description The Urumieh-Dokhtar Magmatic Arc (UDMA) is part of the Alpine-Himalayan orogenic belt and interpreted to be a subduction-related Andean-type magmatic arc. Along this belt, Eocene volcanics and some gabbroic to granitic bodies crop out. The main rock types of the studied intrusion are granite, granodiorite, and diorite. They have geochemical features typical of magnesian, calc-alkaline, metaluminous to slightly peraluminous granites and I-type intrusive rock that have a strong enrichment in Large-Ion Lithophile (LIL) elements (e.g. Rb, Ba, Sr), and a depletion in High Field Strength (HFS) elements (e.g. Nb, Ti, P), typical of subduction-related magmas. Zircon U-Pb dating was applied to determine the emplacement ages of the different intrusions in the Ardestan area. Among them the Kuh-e Dom diorite is 53.9±0.4Ma old; the Kuh-e Dom granodiorite is 51.10±0.4Ma old; the Mehrabad granodiorite is 36.8±0.5Ma old, the Nasrand granodiorite is 36.5±0.5Ma old, the Zafarghand granodiorite is 24.6±1.0Ma old, and the Feshark granodiorite is 20.5±0.8Ma old. These results delineate more accurately the magmatic evolution related to the Neotethyan subduction from the Lower Eocene to Lower Miocene, and the subsequent Zagros orogeny that resulted from the Arabia-Eurasia collision. The emplacement of these intrusive rocks inside the UDMA, which has a close relationship with the collisional orogeny, is transitional from a subduction-related setting to post-collisional setting in the Ardestan area.
publishDate 2017
dc.date.none.fl_str_mv 2
2017-01-01
2017
2017-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/171193
https://dx.doi.org/urn:doi:10.1344/GeologicaActa2017.15.1.3
url https://ddd.uab.cat/record/171193
https://dx.doi.org/urn:doi:10.1344/GeologicaActa2017.15.1.3
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
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https://creativecommons.org/licenses/by-sa/3.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
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eu_rights_str_mv openAccess
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dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
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repository.mail.fl_str_mv
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