Petrology and Geochemistry of Post-Collisional Early Miocene Volcanism in the Karacadag Area (Central Anatolia, Turkey)

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dc.contributor.authorAsan, Kursad
dc.contributor.authorKurt, Huseyin
dc.date.accessioned2020-03-26T18:15:36Z
dc.date.available2020-03-26T18:15:36Z
dc.date.issued2011
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractEarly Miocene (ca. 21-18 Ma) volcanism in the Karacadag area comprises three groups of volcanic rocks: (1) calcalkaline suite (andesitic to rhyolitic lavas and their pyroclastics), (2) mildly-alkaline suite (alkali basalt, hawaiite, mugearite, benmoreite and trachydacite), and (3) a single trachyandesitic flow unit. Field observations, (40)Ar/(39)Ar ages and geochemical data show that there was a progressive temporal transition from group 1 to 3 in a post-collisional tectonic setting. The cakalkaline suite rocks with medium-K in composition resemble those of subduction-related lavas, whereas the mildly-alkaline suite rocks having a sodic tendency (Na(2)O/K(2)O=1.5-3.2) resemble those of within-plate lavas. Incompatible element and Sr-Nd isotopic characteristics of the suites suggest that the lithospheric mantle beneath the Karacadag area was heterogeneously enriched by two processes before collision: (1) enrichment by subduction-related processes, which is important in the genesis of the calcalkaline volcanism, (2) enrichment by small degree melts from the astenosphere, which dominates the mildly alkaline volcanism. Perturbation of the enriched lithosphere by either delamination following collision and uplift or removal of the subducted slab following subduction and collision (i.e., slab breakoff) is the likely mechanism for the initiation of the post-collision volcanism.en_US
dc.description.sponsorshipSelcuk UniversitySelcuk University [05401043, 2003/186]en_US
dc.description.sponsorshipThis study was financially supported by the Selcuk University Scientific Research Projects Coordination (Project No: 05401043 and 2003/186). The authors gratefully thank the Selcuk University for its support.en_US
dc.identifier.doi10.1111/j.1755-6724.2011.00243.xen_US
dc.identifier.endpage1117en_US
dc.identifier.issn1000-9515en_US
dc.identifier.issue5en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage1100en_US
dc.identifier.urihttps://dx.doi.org/10.1111/j.1755-6724.2011.00243.x
dc.identifier.urihttps://hdl.handle.net/20.500.12395/26715
dc.identifier.volume85en_US
dc.identifier.wosWOS:000295513600014en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherWILEY-BLACKWELLen_US
dc.relation.ispartofACTA GEOLOGICA SINICA-ENGLISH EDITIONen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectpost-collisionen_US
dc.subjectcalcalkalineen_US
dc.subjectSr-Nd isotopesen_US
dc.subjectKaracadagen_US
dc.subjectCentral Anatoliaen_US
dc.titlePetrology and Geochemistry of Post-Collisional Early Miocene Volcanism in the Karacadag Area (Central Anatolia, Turkey)en_US
dc.typeArticleen_US

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