Uranium/Thorium isotopic composition of various mid-late Holocene features collected from twelve islands in French Polynesia.

Nadine Hallmann (1) , Gilbert Camoin (1) , Anton Eisenhauer (2) , Elias Samankassou (3) , Claude Vella (1) , Alberic Botella (4) , Glenn A. Milne (4) , Virginie Pothin (1) , Philippe Dussouillez (1) , Jules Fleury (1) , Jan Fietzke (2) , Tyler Goepfert (5)

1 CEREGE - Centre européen de recherche et d'enseignement des géosciences de l'environnement
2 GEOMAR - Helmholtz Centre for Ocean Research [Kiel]
3 UNIGE - Université de Genève = University of Geneva
4 University of Ottawa [Ottawa]
5 ASU - Arizona State University [Tempe]

Uranium/Thorium isotopic composition of 165 samples from various mid-late Holocene features, such as in situ Porites microatolls, in situ reef Bats, conglomerates and reworked reef blocks, collected from twelve islands in French Polynesia. Recommendations of Dutton et al. (2017) were followed for the presentation of U/Th age data. For each parameter, the Orst column contains the value and the second column the statistical error. All statistical errors are two standard deviations of the mean (2σ mean). All samples have been corrected for initial 230Th by using a 230Th/232Th activity ratio of 0.66 ± 0.2 (Fietzke et al., 2005). Non-reported data consist of 230Th/232Th ratios which became negative due to background corrections. 238U concentrations are not corrected for the background.

Domaines: Sciences de l'environnement

Nadine Hallmann, Gilbert Camoin, Anton Eisenhauer, Elias Samankassou, Claude Vella, et al.. Uranium/Thorium isotopic composition of various mid-late Holocene features collected from twelve islands in French Polynesia.. 2021, ⟨10.1594/PANGAEA.927589⟩. ⟨hal-03432427⟩