Massari, Francesco; Fellin, Maria Giuditta; Stefani, Cristina; Enkelmann, Eva; Dieni, Iginio; Sanchetti, Stefano (2026): Detrital zircon geo-and thermochronology of the Lanaittu Sandstone in Eastern Sardinia, Italy [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.995336
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2026-06-23 • DOI registered: 2026-06-23
Abstract:
The data set comprises pairs of laser ablation U-Pb and (U-Th)/He double dating of detrital zircons from two samples (177-1 and 177-2) of middle-upper Campanian turbiditic sandstone deposits. The samples were cored along a geognostic borehole in the Lanaittu valley in eastern Sardinia. We combine zircon U-Pb geochronology with (U-Th)/He thermochronology to determine the time of grain formation and cooling through the upper crust. Together, these data provide a more powerful provenance signal than each of these methods alone. The two samples consist of detrital zircon U-Pb dates that are Permian and older, and show no significant differences between them. The acceptable U-Pb dates range from 223 ± 8 Ma (2σ) to 2490 ± 42 Ma and are much older than the middle-late Campanian depositional age of the dated samples. The detrital zircon U-Pb date distributions are consistent with a provenance from the Sardinia block or from the continental crust of an Alkapeca continental fragment, such as a Calabrian terrane/subterrane, or from both sources. The detrital zircon (U-Th)/He dates are also all older than the depositional age of the sandstones. Their distribution is continuous and rather simple with most dates (78 %) being Paleozoic to Jurassic forming a population centered around 261 ± 5 Ma, while the remaining dates (22%) form a population centered at 100 ± 4 Ma. The detrital zircon (U-Th)/He dates suggest a source area exposing rocks with heterogeneous thermal histories—some having experienced rapid cooling during the Cretaceous, and most others resided in the upper crust since the Paleozoic–early Mesozoic.
Supplement to:
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
Funding:
Coverage:
Latitude: 40.259200 * Longitude: 9.501400
Date/Time Start: 1994-01-01T00:00:00 * Date/Time End: 1994-01-01T00:00:00
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Enkelmann, Eva | |||
| 2 | Sample code/label | Sample label | Enkelmann, Eva | Uranium-Lead Laser Ablation Label | ||
| 3 | Spot identification | Spot ID | Enkelmann, Eva | Helium laser ablation | ||
| 4 | Uranium | U | µg/g | Enkelmann, Eva | see description in data abstract | |
| 5 | Uranium, uncertainty | U unc | ± | Enkelmann, Eva | see description in data abstract | Represents two standard deviation |
| 6 | Thorium | Th | µg/g | Enkelmann, Eva | see description in data abstract | |
| 7 | Thorium, uncertainty | Th unc | ± | Enkelmann, Eva | see description in data abstract | Represents two standard deviation |
| 8 | Uranium, effective | e U | µg/g | Enkelmann, Eva | see description in data abstract | |
| 9 | Uranium, effective, uncertainty | e U unc | ± | Enkelmann, Eva | see description in data abstract | Represents two standard deviation |
| 10 | Age, mineral | Age mineral | Ma | Enkelmann, Eva | Age, (Uranium-Thorium)/Helium | |
| 11 | Age, mineral, uncertainty | Age mineral unc | ± | Enkelmann, Eva | Age, (Uranium-Thorium)/Helium | Represents two standard deviation |
| 12 | Age, mineral | Age mineral | Ma | Enkelmann, Eva | Age, Uranium-Lead, concordia | |
| 13 | Age, mineral, uncertainty | Age mineral unc | ± | Enkelmann, Eva | Age, Uranium-Lead, concordia | Represents two standard deviation |
| 14 | Concordance | Conc | % | Probability | ||
| 15 | Age, mineral | Age mineral | Ma | Enkelmann, Eva | Age, Uranium-Lead | Accepted |
| 16 | Age, mineral, uncertainty | Age mineral unc | ± | Enkelmann, Eva | Age, Uranium-Lead | Accepted, represents two standard deviation |
| 17 | Comment | Comment | Enkelmann, Eva | SL: sloping 6/8 or 7/6, suggestive of age heterogeneity; CL: analysis affected by common Pb, DO: pit drilled out of grain; UNC: high He uncertainty >30% (2s) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
3354 data points
Download Data
View dataset as HTML (shows only first 2000 rows)