Age and petrology of Eocene-Oligocene calc-alkaline volcanism in Biga Peninsula (NW Turkey): Implications for magma origin and geodynamic evolution

Basit Öğe Kaydı
dc.authoridBillor, Mehmet Zeki/0000-0002-8811-199X
dc.authoridErenoglu, Oya / 0000-0003-1235-3009
dc.contributor.authorErenoğlu, Oya
dc.contributor.authorBozcu, Mustafa
dc.contributor.authorBillor, M. Zeki
dc.date.accessioned2025-01-27T20:49:59Z
dc.date.available2025-01-27T20:49:59Z
dc.date.issued2022
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractIn NW Anatolia, Eocene-Oligocene post-collisional volcanism is represented by K-rich volcanic rocks, including high K calc-alkaline products. Magmatic rocks in the Dededag area (Biga Peninsula, NW Turkey) can be classified into 6 different groups with lithostratigraphic and chronostratigraphic data using 40Ar/39Ar methods (Eoceneearly Oligocene, 42.08 +/- 0.09 to 29.02 +/- 0.29 Ma). From the Eocene period, there are calc-alkaline Laledag granodiorite, Beycayir volcanics with andesite and dacite composition, and also Kizildam volcanics with alkaline and basic character (basaltic trachyandesite, trachybasalt). Furthermore, in the Oligocene period, calc-alkaline volcanism started with Dededag volcanics with dacite and rhyolite intermediate-acidic composition, continued with Kircalar volcanics consisting of basalt and basaltic andesite, and Harmancik volcanics ranging from basalt to rhyolite. The calc-alkaline camyayla pluton with quartz monzonite composition intruded into Oligocene Dededag and Harmancik volcanics in the region. Alkaline lavas in the region are classified as high-K and shoshonitic, and calc-alkaline lavas are medium-high-K. On N-type mid-ocean ridge basalt and chondritenormalized trace element diagrams, enrichment was observed for all volcanic units with regard to large ion lithophile elements and light rare earth elements. High field strength elements and heavy rare earth elements were depleted in all volcanic units. These compositions reveal the participation of a mantle source that was enriched by subduction components. Using geochemical data, all the volcanic rocks differentiated as a result of magma mixing/replenishment and contamination/assimilation processes. Consequently, the source of volcanism is thought to derive from the compressional regime associated with collision during the Eocene-Oligocene, and from a previously-enriched lithospheric mantle source with subsequent effects of the extensional regime.
dc.description.sponsorshipCanakkale Onsekiz Mart University Scientific Research Projects Coordination Unit [2012/012]
dc.description.sponsorshipThis study is a part of the Ph.D. study of the first author. This research was supported by Canakkale Onsekiz Mart University Scientific Research Projects Coordination Unit (Project number: 2012/012) . We are very grateful the editor, three anonymous reviewers and Dr. Aurelie Germa for significantly improving the quality of the manuscript. In addition, we would like to thank Dr. Mehmet Keskin and Dr. Zekiye Karaclk for their suggestions and invaluable scientific contributions. The authors thank Catherine Yig?it for checking and proofreading the English in the paper.
dc.identifier.doi10.1016/j.jafrearsci.2022.104559
dc.identifier.issn1464-343X
dc.identifier.issn1879-1956
dc.identifier.scopus2-s2.0-85130906355
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.jafrearsci.2022.104559
dc.identifier.urihttps://hdl.handle.net/20.500.12428/25376
dc.identifier.volume192
dc.identifier.wosWOS:000799614800001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofJournal of African Earth Sciences
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectEocene-Oligocene volcanism
dc.subjectAr-40
dc.subject(39) Ar geochronology
dc.subjectPetrogenesis
dc.subjectBiga Peninsula
dc.subjectNW Anatolia
dc.titleAge and petrology of Eocene-Oligocene calc-alkaline volcanism in Biga Peninsula (NW Turkey): Implications for magma origin and geodynamic evolution
dc.typeArticle

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu