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dc.contributor.authorAydin, Faruk
dc.contributor.authorSaka, Simge Oguz
dc.contributor.authorSen, Cuneyt
dc.contributor.authorDokuz, Abdurrahman
dc.contributor.authorAiglsperger, Thomas
dc.contributor.authorUysal, Ibrahim
dc.contributor.authorBaser, Rasim
dc.date.accessioned2021-11-09T19:50:08Z
dc.date.available2021-11-09T19:50:08Z
dc.date.issued2020
dc.identifier.issn1367-9120
dc.identifier.issn1878-5786
dc.identifier.urihttps://doi.org/10.1016/j.jseaes.2019.104217
dc.identifier.urihttps://hdl.handle.net/20.500.12440/4201
dc.description.abstractThe Late Cretaceous Artvin volcanic rocks (LCAVs) from the eastern Sakarya zone (ESZ) of NE Turkey are composed of mafic/basaltic (S1-catak and S2-caglayan) and felsic/acidic (S1-Kizilkaya and S2-Tirebolu) rock types that occurred in two successive stages: (i) first stage (S1: Turonian-Early Santonian) and (ii) second stage (S2: Late Santonian-Campanian). Clinopyroxene thermobarometric results point that the S2-caglayan basaltic rocks have crystallised at higher temperatures and under deeper crustal conditions than those of the S1-catak basaltic rocks. The LCAVs show a wide compositional spectrum, ranging from tholeiite to calc-alkaline/shoshonite and are typically represented by a geochemical composition resembling subduction-related arc rocks although the Sr-87/Sr-86(()1) (0.7044-0.7071) and epsilon Nd-(1) values (-0.63 to + 3.47) as well as (206)pb/Pb-204((1)) (18.07-18.56), 207pb (207)pb/Pb-204((1)) (15.57-15.62) and(208)pb/Pb-204((1)) (37.12-38.55) ratios show very limited variation. The parent magmas of the S1-catak and S2-caglayan mafic volcanic rocks were derived from underplated basaltic melts that originated by partial melting of metasomatised spinet Iherzolite and spinel-garnet lherzolite, respectively. It is proposed that the compositions of the S1-Kizilkaya (mainly dacitic) and S2-Tirebolu (rhyolitic to trachytic) felsic rocks were particularly controlled by metasomatised mantle-crust interaction and MASH zone + shallow crustal fractionation processes. Our data, together with data from previous studies, suggest that the S1- and S2-mafic and felsic rocks of the LCAVs (similar to 95-75 Ma) are the products of two-stage volcanic event that took place during the northward subduction of the northern Neotethys Ocean (NNO).en_US
dc.description.sponsorshipTUBITAKTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [112Y365]en_US
dc.description.sponsorshipThis study was financially supported by TUBITAK (grant#112Y365). We are grateful to Iskender Kurt (MTA, Turkey) and Dr. Fuat Erkul (Akdeniz University, Turkey) for their assistance during the first stage of field studies. Dr. Melanie Kaliwoda and Dr. Dirk Muller (Ludwig-Maximilians University, Germany) are acknowledged for their great help with the electron microprobe measurements. We sincerely thank Dr. Frank Ramos (New Mexico State University, USA) for Sr-Nd-Pb isotope analyses and the staff of the IBERSIMS geochronology laboratory (University of Granada, Spain) for zircon U-Pb dating. We thank three anonymous referees for their constructive reviews and Mei-Fu Zhou for his editorial handling.en_US
dc.language.isoengen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.relation.ispartofJournal of Asian Earth Sciencesen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectLate Cretaceousen_US
dc.subjectSubductionen_US
dc.subjectVolcanismen_US
dc.subjectMantle-crust interactionen_US
dc.subjectSakarya Zoneen_US
dc.subjectEastern Pontidesen_US
dc.subjectNE Turkeyen_US
dc.titleTemporal, geochemical and geodynamic evolution of the Late Cretaceous subduction zone volcanism in the eastern Sakarya Zone, NE Turkey: Implications for mantle-crust interaction in an arc settingen_US
dc.typearticleen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.description.wospublicationidWOS:000521111600021en_US
dc.description.scopuspublicationid2-s2.0-85079071476en_US
dc.departmentGümüşhane Üniversitesien_US
dc.authoridUysal, Ibrahim / 0000-0001-7607-2893
dc.authoridKANDEMIR, RAIF / 0000-0002-0344-9159
dc.identifier.volume192en_US
dc.identifier.doi10.1016/j.jseaes.2019.104217
dc.authorwosidAydin, Faruk / AAG-5614-2019
dc.authorwosidUysal, Ibrahim / AAE-3044-2019
dc.authorwosidSAKA, Simge OGUZ / AAN-5948-2021
dc.authorscopusid57196624878
dc.authorscopusid57214750473
dc.authorscopusid57211129364
dc.authorscopusid13406528500
dc.authorscopusid36088898100
dc.authorscopusid50062274000
dc.authorscopusid12808048100


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