Petrogenesis of the late Cretaceous K-rich volcanic rocks from the Central Pontide orogenic belt, North Turkey

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dc.contributor.authorAsan, Kursad
dc.contributor.authorKurt, Huseyin
dc.contributor.authorFrancis, Don
dc.contributor.authorMorgan, Ganerod
dc.date.accessioned2020-03-26T18:52:00Z
dc.date.available2020-03-26T18:52:00Z
dc.date.issued2014
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractSubduction-related volcanic rocks are widespread in the Central Pontides of Turkey, and represented by the Hamsaros volcanic succession in the Sinop area to the north. The volcanic rocks display high-K calc-alkaline, shoshonitic and ultra-K affinities. 40Ar/39Ar age data indicate that the rocks occurred during the Late Cretaceous (ca 82Ma), and the volcanic suites were coeval. Primitive mantle-normalized trace element patterns of all the lavas are characterized by strong enrichments in large ion lithophile elements (LILE) (Rb, Ba, K, and Sr), Th, U, Pb, and light rare earth elements (LREE; La, Ce) and prominent negative Nb, Ta, and Ti anomalies, all typical of subduction-related lavas. There is a systematic increase in the enrichment of incompatible trace elements from the high-K calc-alkaline lavas through the shoshonitic to the ultra-K lavas. In addition, the shoshonitic and ultra-K lavas have significantly higher 87Sr/86Sr (0.70666-0.70834) and lower 143Nd/144Nd (0.51227-0.51236) initial ratios than coexisting high-K calc-alkaline lavas (87Sr/86Sr 0.70576-0.70613, 143Nd/144Nd 0.51245-0.51253). Geochemical and isotopic data show that the shoshonitic and ultra-K rocks cannot be derived from the high-K calc-alkaline suite by any shallow level differentiation process, and point to a derivation from distinct mantle sources. The shoshonitic and ultra-K rocks were derived from metasomatic veins related to melting of recycled subducted sediments, but the high-K calc-alkaline rocks from a lithospheric source metasomatized by fluids from subduction zone.en_US
dc.description.sponsorshipSelcuk University Scientific Research Projects CoordinationSelcuk University [10401022]; Selcuk UniversitySelcuk Universityen_US
dc.description.sponsorshipThis study was financially supported by the Selcuk University Scientific Research Projects Coordination (Project No: 10401022). The authors gratefully thank the Selcuk University for support. We also thank Lang Shi for microprobe analysis (McGill University, Canada) and Dr Anton Eisenhauer for Sr-Nd isotope analysis (GEOMAR, Germany). The authors also thank associate editor Dr Ryuichi Shinjo for critical and constructive comments.en_US
dc.identifier.doi10.1111/iar.12061en_US
dc.identifier.endpage124en_US
dc.identifier.issn1038-4871en_US
dc.identifier.issn1440-1738en_US
dc.identifier.issue2en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage102en_US
dc.identifier.urihttps://dx.doi.org/10.1111/iar.12061
dc.identifier.urihttps://hdl.handle.net/20.500.12395/31060
dc.identifier.volume23en_US
dc.identifier.wosWOS:000337560900002en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherWILEYen_US
dc.relation.ispartofISLAND ARCen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectCentral Pontideen_US
dc.subjectmantle metasomatismen_US
dc.subjectshoshoniteen_US
dc.subjectsubductionen_US
dc.subjectTurkeyen_US
dc.subjectultra-potassicen_US
dc.titlePetrogenesis of the late Cretaceous K-rich volcanic rocks from the Central Pontide orogenic belt, North Turkeyen_US
dc.typeArticleen_US

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