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dc.contributor.authorOenal, Ayten
dc.contributor.authorBoztug, Durmus
dc.contributor.authorArslan, Mehmet
dc.contributor.authorSpell, Terry L.
dc.contributor.authorKueruem, Sevcan
dc.date.accessioned2019-07-27T12:10:23Z
dc.date.accessioned2019-07-28T10:15:49Z
dc.date.available2019-07-27T12:10:23Z
dc.date.available2019-07-28T10:15:49Z
dc.date.issued2008
dc.identifier.issn1300-0985
dc.identifier.urihttps://hdl.handle.net/20.500.12418/10477
dc.descriptionWOS: 000253677500004en_US
dc.description.abstractThe Orduzu volcanics, which are part of the Yamadag volcanics in the Malatya region, include rhyolite, rhyolitic dykes, trachyandesite and basaltic trachyanclesitic dykes. Mafic globular occurrences within the basaltic trachyandesitic dykes, the existence of basaltic trachyandesite enclaves within the trachyandesite, and other textural and geochemical evidence all indicate magma mingling/mixing. Incremental Ar-40-Ar-39 dating on plagioclase from the rhyolite, from rhyolite dykes and basaltic trachyandesite yielded consistently 16 Ma (Middle Miocene). Primordial mantle-normalized spider diagrams of the rhyolite and rhyolitic dykes represent enrichments in some large ion lithophile elements (Cs, Rb, Ba, K, Th, U) but remarkably depletion in Sr, Nb, Ti, Eu and slight depletion in some high field strength elements (Hf, Zr) relative to the trachyandesites and basaltic trachyanclesitic dykes. Chondrite-normalized rare earth element spidergrams yield a high (La/Lu)(CN) (18-47) and Eu/Eu* (0.57-0.92) ratios for the rhyolites and rhyloitic dykes, but a low (La/Lu)(CN) (7-13) and Eu/Eu* (0.86-1.05) values for the trachyandesites and basaltic trachyandesitic dykes. From the field relations and geochemical data, it is concluded that three distinct magma sources were spatially and temporally involved in the genesis of the Orduzu volcanics, that include a calc-alkaline, crustal-derived rhyolitic melt, another calc-alkaline, lithospheric mantle-derived andesitic magma, and a mildly alkaline, lithospheric mantle-derived basaltic magma.en_US
dc.language.isoengen_US
dc.publisherSCIENTIFIC TECHNICAL RESEARCH COUNCIL TURKEY-TUBITAKen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectpetrologyen_US
dc.subjectAr-Ar datingen_US
dc.subjectNeogene volcanismen_US
dc.subjectMalatyaen_US
dc.subjecteastern Anatoliaen_US
dc.subjectTurkeyen_US
dc.titlePetrology and Ar-40-Ar-39 age of the bimodal Orduzu volcanics (Malatya) from the western end of the eastern Anatolian Neogene volcanism, Turkeyen_US
dc.typearticleen_US
dc.relation.journalTURKISH JOURNAL OF EARTH SCIENCESen_US
dc.contributor.department[Oenal, Ayten] Inonu Univ, Dept Min Engn, TR-44280 Malatya, Turkey -- [Boztug, Durmus] Cumhuriyet Univ, Dept Geol Engn, TR-58140 Sivas, Turkey -- [Arslan, Mehmet] Karadeniz Tech Univ, Dept Geol Engn, TR-61080 Trabzon, Turkey -- [Spell, Terry L.] Univ Nevada, Dept Geosci, Las Vegas, NV 89154 USA -- [Kueruem, Sevcan] Firat Univ, Dept Geol Engn, TR-23119 Elazig, Turkeyen_US
dc.identifier.volume17en_US
dc.identifier.issue1en_US
dc.identifier.endpage109en_US
dc.identifier.startpage85en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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