Permian 40Ar/39Ar ages for post-Variscan minor intrusions in the Iberian Range and Spanish Central System
40Ar/39Ar dating of biotite from a calc-alkaline gabbro stock NW of Loscos in the Iberian Range yielded a slightly disturbed gas release spectrum. It has an early Permian, 288.5 ± 1.4 Ma total gas age, interpreted as the minimum emplacement age. The 40Ar/39Ar apparent age of the gabbro agrees with t...
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| Veröffentlicht in: | Geologica acta 2008, Vol.6 (4), p.335-344 |
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| creator | Perini, Giulia Jan Timmerman, Martin |
| description | 40Ar/39Ar dating of biotite from a calc-alkaline gabbro stock NW of Loscos in the Iberian Range yielded a slightly disturbed gas release spectrum. It has an early Permian, 288.5 ± 1.4 Ma total gas age, interpreted as the minimum emplacement age. The 40Ar/39Ar apparent age of the gabbro agrees with the Autunian stratigraphic age of related volcanic rocks. 40Ar/39Ar step heating dating of amphibole phenocrysts from an alkaline camptonite dyke ca. 4 km SE of El Hoyo de Pinares in the Sierra Guadarrama sector of the Spanish Central System yielded a mid Permian 264 ± 3 Ma plateau age, interpreted as the emplacement age. The age is indistinguishable from published 40Ar/39Ar amphibole ages for N-S trending camptonite dykes from the western, Sierra de Gredos segment of the Central System. This suggests that the camptonite dykes from both sectors belong to the same generation. |
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It has an early Permian, 288.5 ± 1.4 Ma total gas age, interpreted as the minimum emplacement age. The 40Ar/39Ar apparent age of the gabbro agrees with the Autunian stratigraphic age of related volcanic rocks. 40Ar/39Ar step heating dating of amphibole phenocrysts from an alkaline camptonite dyke ca. 4 km SE of El Hoyo de Pinares in the Sierra Guadarrama sector of the Spanish Central System yielded a mid Permian 264 ± 3 Ma plateau age, interpreted as the emplacement age. The age is indistinguishable from published 40Ar/39Ar amphibole ages for N-S trending camptonite dykes from the western, Sierra de Gredos segment of the Central System. This suggests that the camptonite dykes from both sectors belong to the same generation.</description><identifier>ISSN: 1695-6133</identifier><identifier>EISSN: 1696-5728</identifier><language>eng</language><publisher>Institut de Ciències de la Terra "Jaume Almera"</publisher><subject>Argon dating ; Iberian Range ; Lamprophyre ; Permian ; Post ; Post-Variscan dykes ; Spanish Central System ; Variscan dykes</subject><ispartof>Geologica acta, 2008, Vol.6 (4), p.335-344</ispartof><rights>free</rights><rights>LICENCIA DE USO: Los documentos a texto completo incluidos en Dialnet son de acceso libre y propiedad de sus autores y/o editores. Por tanto, cualquier acto de reproducción, distribución, comunicación pública y/o transformación total o parcial requiere el consentimiento expreso y escrito de aquéllos. Cualquier enlace al texto completo de estos documentos deberá hacerse a través de la URL oficial de éstos en Dialnet. Más información: https://dialnet.unirioja.es/info/derechosOAI | INTELLECTUAL PROPERTY RIGHTS STATEMENT: Full text documents hosted by Dialnet are protected by copyright and/or related rights. This digital object is accessible without charge, but its use is subject to the licensing conditions set by its authors or editors. Unless expressly stated otherwise in the licensing conditions, you are free to linking, browsing, printing and making a copy for your own personal purposes. All other acts of reproduction and communication to the public are subject to the licensing conditions expressed by editors and authors and require consent from them. Any link to this document should be made using its official URL in Dialnet. 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The 40Ar/39Ar apparent age of the gabbro agrees with the Autunian stratigraphic age of related volcanic rocks. 40Ar/39Ar step heating dating of amphibole phenocrysts from an alkaline camptonite dyke ca. 4 km SE of El Hoyo de Pinares in the Sierra Guadarrama sector of the Spanish Central System yielded a mid Permian 264 ± 3 Ma plateau age, interpreted as the emplacement age. The age is indistinguishable from published 40Ar/39Ar amphibole ages for N-S trending camptonite dykes from the western, Sierra de Gredos segment of the Central System. This suggests that the camptonite dykes from both sectors belong to the same generation.</description><subject>Argon dating</subject><subject>Iberian Range</subject><subject>Lamprophyre</subject><subject>Permian</subject><subject>Post</subject><subject>Post-Variscan dykes</subject><subject>Spanish Central System</subject><subject>Variscan dykes</subject><issn>1695-6133</issn><issn>1696-5728</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>FKZ</sourceid><recordid>eNpVjl9LwzAUxYsoOKffIe9STJs0acCXMvwzGCjb9LXcNrdbRpuOJAP37c2cPnhf7uFwzo9zkUwyoURayLy8_NFFKjLGrpMb73eUMilKNknMO7rBgCWcVu6BqcoR2KAn3ejIfvQh_QRnfBsDg7HRMza4gzej9VGSsEUyb9CdAEuwGyRgNVntwRq_JTOMYejJ6ugDDrfJVQe9x7vfP00-np_Ws9d08fYyn1WLVGeSh5SrMhO0zBUKZHF8R5VUlDbY0YZnnW4apBoE66RsFWO6LCTLOCKXvNUSKJsmj2euNtBbDPXemQHcsR7B1H_ewRpnxh3U6Otquabx8pwzwWP9_lzvIRhrrMavfwSH7eh0XZRxVs6-ATrYbQg</recordid><startdate>2008</startdate><enddate>2008</enddate><creator>Perini, Giulia</creator><creator>Jan Timmerman, Martin</creator><general>Institut de Ciències de la Terra "Jaume Almera"</general><scope>77F</scope><scope>AGMXS</scope><scope>FKZ</scope></search><sort><creationdate>2008</creationdate><title>Permian 40Ar/39Ar ages for post-Variscan minor intrusions in the Iberian Range and Spanish Central System</title><author>Perini, Giulia ; Jan Timmerman, Martin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-d174t-498160829e6e3572f097900bef0b41fdbbe0da63f77c933d857314ee474cd7a03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Argon dating</topic><topic>Iberian Range</topic><topic>Lamprophyre</topic><topic>Permian</topic><topic>Post</topic><topic>Post-Variscan dykes</topic><topic>Spanish Central System</topic><topic>Variscan dykes</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Perini, Giulia</creatorcontrib><creatorcontrib>Jan Timmerman, Martin</creatorcontrib><collection>Latindex</collection><collection>Dialnet (Open Access Full Text)</collection><collection>Dialnet</collection><jtitle>Geologica acta</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Perini, Giulia</au><au>Jan Timmerman, Martin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Permian 40Ar/39Ar ages for post-Variscan minor intrusions in the Iberian Range and Spanish Central System</atitle><jtitle>Geologica acta</jtitle><date>2008</date><risdate>2008</risdate><volume>6</volume><issue>4</issue><spage>335</spage><epage>344</epage><pages>335-344</pages><issn>1695-6133</issn><eissn>1696-5728</eissn><abstract>40Ar/39Ar dating of biotite from a calc-alkaline gabbro stock NW of Loscos in the Iberian Range yielded a slightly disturbed gas release spectrum. It has an early Permian, 288.5 ± 1.4 Ma total gas age, interpreted as the minimum emplacement age. The 40Ar/39Ar apparent age of the gabbro agrees with the Autunian stratigraphic age of related volcanic rocks. 40Ar/39Ar step heating dating of amphibole phenocrysts from an alkaline camptonite dyke ca. 4 km SE of El Hoyo de Pinares in the Sierra Guadarrama sector of the Spanish Central System yielded a mid Permian 264 ± 3 Ma plateau age, interpreted as the emplacement age. The age is indistinguishable from published 40Ar/39Ar amphibole ages for N-S trending camptonite dykes from the western, Sierra de Gredos segment of the Central System. This suggests that the camptonite dykes from both sectors belong to the same generation.</abstract><pub>Institut de Ciències de la Terra "Jaume Almera"</pub><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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| source | Dialnet; DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals; Revistes Catalanes amb Accés Obert (RACO) |
| subjects | Argon dating Iberian Range Lamprophyre Permian Post Post-Variscan dykes Spanish Central System Variscan dykes |
| title | Permian 40Ar/39Ar ages for post-Variscan minor intrusions in the Iberian Range and Spanish Central System |
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