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dc.contributor.authorKaygusuz, Abdullah
dc.contributor.authorSiebel, Wolfgang
dc.contributor.authorIlbeyli, Nurdane
dc.contributor.authorArslan, Mehmet
dc.contributor.authorSatir, Muharrem
dc.contributor.authorSen, Cuneyt
dc.date.accessioned2021-11-09T19:49:47Z
dc.date.available2021-11-09T19:49:47Z
dc.date.issued2010
dc.identifier.issn0077-7757
dc.identifier.urihttps://doi.org/10.1127/0077-7757/2010/0178
dc.identifier.urihttps://hdl.handle.net/20.500.12440/4127
dc.description.abstractConvergent plate margins are the most intense areas of granitoid magmatism on Earth. The Eastern Pontide Magmatic Belt in NE Turkey represents a paleo-arc with numerous quartz diorite to syenite intrusions, ranging in age from 142 to 56 Ma and being composed of K-feldspar, plagioclase, quartz, pyroxene, hornblende, biotite, and Fe-Ti oxides. The granitoids exhibit low-to high-K calc-alkaline, metaluminous to slightly peraluminous I-type features and contain abundant mafic magmatic enclaves (MME). They are characteristically enriched in large ion lithophile elements (LILE) and light rare earth elements (LREE) relative to high field strength elements (HFSE). Chondrite-normalized REE patterns are fractionated (La-N/Lu-N = 1.49-17.4) with pronounced negative Eu anomalies (Eu/Eu* = 0.46-1.77). Initial Sr-87/Sr-86 values are between 0.7056 and 0.7079, and epsilon(Nd(i)) values between -5.3 and 1.6. Fractional crystallization, magma mixing/mingling and crustal contamination played an important role during magma evolution. All these characteristics, combined with the low values of K2O/Na2O, Mg-number, ASI and ratios of Al2O3/(FeOT+MgO+TiO2) and (Na2O+K2O)/(FeOT+MgO+TiO2), suggest an origin by dehydration melting of mafic (amphibolitic) or tonalitic lower crustal source rocks.en_US
dc.description.sponsorshipTUBITAK-AnkaraTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [109Y052]; Karadeniz Technical UniversityKaradeniz Technical Universityen_US
dc.description.sponsorshipThis work was supported by TUBITAK-Ankara (109Y052) and by the Research Fund of the Karadeniz Technical University. We are greateful to Bin Chen helpful suggestions about isotope analyses. We appreciate the help of E. Reitter during radiogenic isotope analyses. Heinz-Gunter Stosch, Erdin Bozkurt, Hulusi Kargi, Selahattin Kadir, Huseyin Kurt and anonymous reviewers are kindly thanked for their general improvement of the manuscript.en_US
dc.language.isoengen_US
dc.publisherE Schweizerbartsche Verlagsbuchhandlungen_US
dc.relation.ispartofNeues Jahrbuch Fur Mineralogie-Abhandlungenen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCretaceous-Paleoceneen_US
dc.subjectEastern Pontidesen_US
dc.subjectSr-Nd-Pb isotopesen_US
dc.subjectsubductionen_US
dc.subjectarc magmatismen_US
dc.subjectU-Pb SHRIMPen_US
dc.titleInsight into magma genesis at convergent plate margins - a case study from the eastern Pontides (NE Turkey)en_US
dc.typearticleen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.description.wospublicationidWOS:000282322900003en_US
dc.description.scopuspublicationid2-s2.0-78649538849en_US
dc.departmentGümüşhane Üniversitesien_US
dc.authoridIlbeyli, Nurdane / 0000-0002-0557-8771
dc.authoridArslan, Mehmet / 0000-0003-0816-4168
dc.identifier.volume187en_US
dc.identifier.issue3en_US
dc.identifier.startpage265en_US
dc.identifier.doi10.1127/0077-7757/2010/0178
dc.identifier.endpage287en_US
dc.authorwosid, Abdullah / Q-2029-2015
dc.authorwosidIlbeyli, Nurdane / A-4661-2016
dc.authorwosidArslan, Mehmet / S-1208-2017
dc.authorwosidSen, Cuneyt / AAH-8315-2020
dc.authorscopusid6701580075
dc.authorscopusid6603855539
dc.authorscopusid6507465932
dc.authorscopusid49160928200
dc.authorscopusid6701751449
dc.authorscopusid57211129364


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