10.1594/PANGAEA.982945Safaierad, 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/rockAGEChlorine (centered log ratio)Potassium (centered log ratio)Calcium (centered log ratio)Titanium (centered log ratio)Silicon (centered log ratio)Manganese (centered log ratio)Iron (centered log ratio)Nickel (centered log ratio)Copper (centered log ratio)Strontium (centered log ratio)Zirconium (centered log ratio)(Rhodium-Indium)/coherence ratioSediment corer, UWITECAge, Bayesian based model Plum on Pb-210 and C-14 dataPowder X-ray diffractometer (XRD), Bruker, D8 ADVANCE ECODataset10.1016/j.quascirev.2025.1096183431 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalThe geochemical data were measured from a 57-cm-long sediment core retrieved 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. Geochemical compositions of the sediment core were analyzed using an ITRAX X-ray fluorescence core scanner (CS-XRF) at the INRS Centre Eau Terre Environnement in Canada. The analysis produced the ratio of Compton (incoherent) to Rayleigh (coherent) scattering (Inc/Coh), which can serve as an indicator of sediment organic content. The scans were measured at 2 mm intervals using 20 kV with a current of 10 mA and a dwell time of 20 seconds. To reduce matrix effects and address the closed-sum issue, elemental intensities (measured in counts per second) were transformed using the centered log-ratio (clr) method. For better visualization, all elemental data were subjected to min-max normalization.-97.438919.5056Fonds de la Recherche Scientifiquehttps://doi.org/10.13039/501100002661PDR T.0079.21Holocene Mexican Crater Lakes and Climate (HolMeCl)