10.1594/PANGAEA.995342Botté, PaulPaulBotté0009-0002-7978-3636Aix Marseille UniversityLicht, AlexisAlexisLicht0000-0002-5267-7545Aix Marseille UniversityJourdan, Anne-LiseAnne-LiseJourdanAix Marseille UniversityMontheil, LenyLenyMontheilAix Marseille UniversityDemory, FrançoisFrançoisDemory0000-0002-7526-9886Aix Marseille UniversityKaya, Mustafa YMustafa YKaya0000-0003-2966-5092RWTH Aachen UniversityOcakoğlu, FarukFarukOcakoğlu0000-0002-4619-5865Eskişehir Osmangazi UniversityAkkiraz, Mehmet SerkanMehmet SerkanAkkirazDumlupinar Universityİbilioğlu, DenizDenizİbilioğluDumlupinar UniversityCoster, PaulinePaulineCosterRéserve naturelle nationale géologique du Luberon, Unesco Global Geopark, Parc naturel régional du LuberonMétais, GrégoireGrégoireMétaisSorbonne Université, Paris, FranceRaynaud, BenjaminBenjaminRaynaudSorbonne Université, Paris, FranceBeard, K ChristopherK ChristopherBeardUniversity of KansasPANGAEA2026AnatoliaBalkanatoliaclumped isotopeContinental depositsEocene-Oligocene TransitionGeochemistrypedogenic carbonatestable oxygen and carbon isotopesSample code/labelConfidence levelSECTION, heightδ13C, calciteδ13C, calcite, errorδ18O, calciteδ18O, calcite, errorMineralsOutcrop sampleIsotope Ratio Mass Spectrometer (IRMS), Thermo Fisher Scientific, MAT 253 Plus; coupled with Carbonate preparation device, Thermo Fisher Scientific, KIEL IVDataset10.1594/PANGAEA.995339168 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalData access is restricted (moratorium, sensitive data, license constraints)This dataset contains stable and clumped isotope data obtained from pedogenic carbonates sampled across a continental sedimentary section at Büyükteflek (Anatolia, Turkey). The section spans the Priabonian and lower Rupelian stages (~37–33 Ma), including the Eocene–Oligocene Transition (EOT) and the Early Oligocene Glacial Maximum (~33.65 Ma). Stable isotope measurements (δ¹³C and δ¹⁸O) were used to document paleoenvironmental and hydrological changes across the record.Stable isotope analyses (δ¹³C, δ¹⁸O) were performed on 23 calcite-dominated pedogenic carbonate powders using a Thermo 253+ mass spectrometer coupled to a Thermo Kiel IV device (Dual Inlet mode) at CEREGE (Aix-Marseille University). Sample powders (80–120 µg) reacted with 105% phosphoric acid at 70°C. Values are reported relative to IAEA-603 in the V-PDB reference frame. Full analytical details are provided in Supplementary Text S1 of Botté et al. (preprint).34.3398139.66181Anatolia, TurkeyEuropean Research Councilhttps://doi.org/10.13039/501100000781101043268ERC DISPERSAL