PANGAEA_995334 Detrital zircon thermochronologic analysis of the Lanaittu Sandstone in Eastern Sardinia, Italy Massari, Francesco; Fellin, Maria Giuditta; Stefani, Cristina; Enkelmann, Eva; Dieni, Iginio; Sanchetti, Stefano Detrital zircon thermochronologic analysis of the Lanaittu Sandstone in Eastern Sardinia, Italy 2026-06-23 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.995334 Investigator Eva Enkelmann eva.enkelmann@ucalgary.ca Earth Science Event label Spot identification Uranium Uranium, uncertainty Thorium Thorium, uncertainty Uranium, effective Uranium, effective, uncertainty Ablation pit Ablation pit, uncertainty Helium Helium, uncertainty Age, mineral Age, mineral, uncertainty Comment geoscientificInformation (U-Th)/He thermochronology 177-1 177-2 Drilling/coring He measurement Lanaittu_177-1 Lanaittu_177-2 Laser Ablation Laser Ablation System, Resonetics Resolution, LR 193 nm; coupled with a automated helium microanalyzer, Alphachron 1994-01-01 1994-01-01 Complete 40.2592 40.2592 9.5014 9.5014 unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 3562 data points text/tab-separated-values Massari, Francesco; Fellin, Maria Giuditta; Stefani, Cristina; Enkelmann, Eva; Dieni, Iginio; Sanchetti, Stefano (accepted): Exhumed eo-Alpine high-pressure rocks fed Campanian turbidites in eastern Sardinia. Geochemistry, Geophysics, Geosystems Härtel, Birk; Enkelmann, Eva; Whelan, Elisha (2026): Combined zircon U/Pb-(U-Th)/He-Raman dating. Chemical Geology, 713, 123435, https://doi.org/10.1016/j.chemgeo.2026.123435 Härtel, Birk; Enkelmann, Eva (2024): The daughter–parent plot: a tool for analyzing thermochronological data. Geochronology (GChron), 6(3), 429-448, https://doi.org/10.5194/gchron-6-429-2024 Pickering, Julia; Matthews, William A; Enkelmann, Eva; Guest, Bernard; Sykes, Chris; Koblinger, Brett M (2020): Laser ablation (U-Th-Sm)/He dating of detrital apatite. Chemical Geology, 548, 119683, https://doi.org/10.1016/j.chemgeo.2020.119683

The data set comprises the results of the (U-Th)/He analysis of detrital zircons from two samples (177-1 and 177-2) of the Lanaittu Sandstone. The analysis was performed following the procedure as in Pickering et al. (2020) and Härtel et al. (2026) using a Resonetics Resolution LR 193 nm excimer laser attached to an Alphachron system for the He measurement. The Alphachron He extraction system was equipped with an ultra-high vacuum chamber. The laser ablation system was set up with a spot size of 15 µm, an ablation time of 6 s and a repetition rate of 10 Hz. The same system setting was used to measure both the validation references and the samples. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.995334"! ** The effective uranium concentration (eU) was derived from the actinide concentrations recalculated iteratively to a common mass and disintegration rate of 238U (Härtel & Enkelmann, 2024). The laser abaltion pit volume was determined by optical interferometry as described in Pickering et al. (2020). The He concentration was calculated from the measured (blank-corrected) volume of He, the pit volume, and an assumed zircon density of 4.6 ± 0.1 g/cm³ The He uncertainty was calculated by uncertainty propagation from analytical uncertainties on the He volume, blank uncertainties, uncertainties in pit volume, zircon density, and the calibration curve. The He concentration was calibrated against a linear function of bracketing reference materials (FC-1, Fish Canyon Tuff). The uncertainty of the He concentration was calculated from the raw He uncertainty and the calibration line uncertainty. Zircon (U-Th)/He date were calculated from the calibrated He concentration and the eU using the iterative approach of Härtel & Enkelmann (2024).

https://doi.org/10.1016/j.chemgeo.2020.119683 Laser ablation (U-Th-Sm)/He dating of detrital apatite https://doi.org/10.1016/j.chemgeo.2026.123435 Combined zircon U/Pb-(U-Th)/He-Raman dating https://doi.org/10.5194/gchron-6-429-2024 The daughter–parent plot: a tool for analyzing thermochronological data DIF 9.4 2026-06-23 2026-07-15