Thermal histories of Cenozoic southern Marmara granitoids from emplacement to exhumation: Implications for tectono-thermal evolution of NW Anatolia (Türkiye)

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dc.authorid0000-0002-5652-4802
dc.contributor.authorAltunkaynak, Safak
dc.contributor.authorUnal, Alp
dc.contributor.authorKamaci, Omer
dc.contributor.authorGuraslan, Isil Nur
dc.contributor.authorSunal, Gursel
dc.contributor.authorYigitbas, Erdinc
dc.contributor.authorDunkl, Istvan
dc.date.accessioned2026-02-03T12:02:41Z
dc.date.available2026-02-03T12:02:41Z
dc.date.issued2026
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractWe investigated the thermal history of the southern Marmara granitoids (Northern Kap & imath;dag, Southern Kap & imath;dag and Avs,a Plutons), from the crystallization cooling to exhumation cooling, by using multiple geothermochronology methods that included zircon U-Pb, biotite 40Ar/39Ar, apatite and zircon (U-Th)/He dating as well as geothermobarometry calculations. The geothermobarometry calculations and zircon U-Pb dating indicate that they were emplaced into mid-crustal levels (13.5 to 8.8 km) during the middle to late Eocene (48-37 Ma). The integrated multiple geo-thermochronological dataset yields similar t-T paths for each pluton, which were divided into three distinct intervals: Interval I: high to mid temperatures (800-350 degrees C), Interval II: mid to mid-low temperatures (350-180 degrees C), and Interval III: mid-low to low temperatures (180-60 degrees C). Interval I is characterized by steep t-T paths showing that the plutons reached mid-temperature levels by rapid cooling during the middle to late Eocene (48-35 Ma). Interval II, on the other hand, is distinguished by skewed t-T paths along the mid- to low temperatures, implying a deceleration in the cooling rates. Finally, in Interval III, the t-T paths steepen again, indicating rapid exhumation in the early Oligocene (32-28 Ma). We infer that the Eocene rapid cooling was most likely induced by bottom-up extension (slab break-off or convective removal of the lithosphere) while the early Oligocene rapid exhumation of NW Anatolia was triggered by the back-arc extension resulting from the rollback of the subducting African slab along the Hellenic trench system, which has migrated southward in time.
dc.description.sponsorshipScientific and Technological Research Council of Turkiye [117Y151]
dc.description.sponsorshipThis research was funded by the Scientific and Technological Research Council of Turkiye (Project No: 117Y151) . The authors would like to express their sincere gratitude to the Associate Editor, Dr. Ibrahim Uysal, for his valuable guidance and support throughout the review process. We also thank the two anonymous reviewers for their constructive comments and insightful suggestions, which helped to improve the quality of this manuscript.
dc.identifier.doi10.1016/j.jseaes.2025.106879
dc.identifier.issn1367-9120
dc.identifier.issn1878-5786
dc.identifier.scopus2-s2.0-105023158969
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.jseaes.2025.106879
dc.identifier.urihttps://hdl.handle.net/20.500.12428/34824
dc.identifier.volume296
dc.identifier.wosWOS:001633443900001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofJournal of Asian Earth Sciences
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20260130
dc.subjectsouthern Marmara granitoids
dc.subjectGeo-thermochronology
dc.subjectThermal history
dc.subjectEocene rapid cooling
dc.subjectOligocene rapid exhumation
dc.titleThermal histories of Cenozoic southern Marmara granitoids from emplacement to exhumation: Implications for tectono-thermal evolution of NW Anatolia (Türkiye)
dc.typeArticle

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