10.1594/PANGAEA.982934Safaierad, RezaRezaSafaierad0000-0002-8295-2560Argiles, Géochimie et Environnement sédimentaires , University of LiègeIsrade-Alcántara, IsabelIsabelIsrade-AlcántaraInstituto de Investigaciones en Ciencias de la Tierra, Universidad Michoacana de San Nicolás de HidalgoRantala, Marttiina VMarttiina VRantala0000-0002-3231-5926Argiles, Géochimie et Environnement sédimentaires , University of LiègeLaboratoire G-Time, Université libre de BruxellesDomínguez-Vázquez, GabrielaGabrielaDomínguez-VázquezInstituto de Investigaciones en Ciencias de la Tierra, Universidad Michoacana de San Nicolás de HidalgoSchefuß, EnnoEnnoSchefuß0000-0002-5960-930XMARUM - Center for Marine Environmental Sciences, University BremenTylmann, WojciechWojciechTylmann0000-0003-1749-5882University of GdańskFrancus, PierrePierreFrancus0000-0001-5465-1966National Institute of Scientific Research, Centre Eau Terre Environnement, Institut National de la Recherche ScientifiqueMattielli, NadineNadineMattielli0000-0002-7170-1520Laboratoire G-Time, Université libre de BruxellesMetcalfe, SarahSarahMetcalfeSchool of Geography, University of NottinghamFagel, NathalieNathalieFagel0000-0002-8231-8295Argiles, Géochimie et Environnement sédimentaires , University of LiègePANGAEA2026carbon isotopeDeuterium Isotopesleaf waxesMexicooxygen isotopePollenSediment coreXRDXRF core scanner dataDEPTH, sediment/rockAGEδ18Oδ18O, standard deviationδ13Cδ13C, standard deviationSediment corer, UWITECAge, Bayesian based model Plum on Pb-210 and C-14 dataMass spectrometer, Finnigan, MAT 252Dataset10.1016/j.quascirev.2025.109618228 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalThe proxy data are measured from a 57-cm long sediment core collected from Lake Alchichica (19° 24' 38 N, 97° 24' 14 W, 2322 masl) at a water depth of ~ 60 m using a Uwitec® coring device equipped with a 9-cm coring tube. The core was split lengthwise, analyzed using XRF core scanning, and subsampled. A Bayesian chronology was created using 210Pb data and three 14C dates.
For stable isotope geochemistry (δ¹⁸O and δ¹³C) of bulk sediments, samples collected at 1 cm intervals were analyzed at MARUM, University of Bremen, using a Finnigan MAT252 mass spectrometer with a Kiel III carbonate preparation device. Results are reported in delta notation (δ) relative to VPDB. Calibration involved a house standard (Solnhofen limestone) referenced to NBS 19 calcite, with standard deviations of 0.06‰ for both δ¹³C and δ¹⁸O.-97.438919.5056Fonds de la Recherche Scientifiquehttps://doi.org/10.13039/501100002661PDR T.0079.21Holocene Mexican Crater Lakes and Climate (HolMeCl)