Articles | Volume 35, issue 3
https://doi.org/10.5194/ejm-35-383-2023
https://doi.org/10.5194/ejm-35-383-2023
Research article
 | 
14 Jun 2023
Research article |  | 14 Jun 2023

Supergene phases from ferruginous duricrusts: non-destructive microsampling and mineralogy prior to (U–Th) ∕ He geochronological analysis

Karina P. P. Marques, Thierry Allard, Cécile Gautheron, Benoît Baptiste, Rosella Pinna-Jamme, Guillaume Morin, Ludovic Delbes, and Pablo Vidal-Torrado

Related authors

Atomic-scale environment of niobium in ore minerals as revealed by XANES and EXAFS at the Nb K-edge
Quentin Bollaert, Mathieu Chassé, Guillaume Morin, Benoît Baptiste, Alexandra Courtin, Laurence Galoisy, Gautier Landrot, Cécile Quantin, and Georges Calas
Eur. J. Mineral., 36, 55–72, https://doi.org/10.5194/ejm-36-55-2024,https://doi.org/10.5194/ejm-36-55-2024, 2024
Short summary
Very-low-grade phyllosilicates in the Aravis massif (Haute-Savoie, France) and the di-trioctahedral substitution in chlorite
Benoît Dubacq, Guillaume Bonnet, Manon Warembourg, and Benoît Baptiste
Eur. J. Mineral., 35, 831–844, https://doi.org/10.5194/ejm-35-831-2023,https://doi.org/10.5194/ejm-35-831-2023, 2023
Short summary
Molecular overtones and two-phonon combination bands in the near-infrared spectra of talc, brucite and lizardite
Etienne Balan, Lorenzo Paulatto, Qianyu Deng, Keevin Béneut, Maxime Guillaumet, and Benoît Baptiste
Eur. J. Mineral., 34, 627–643, https://doi.org/10.5194/ejm-34-627-2022,https://doi.org/10.5194/ejm-34-627-2022, 2022
Short summary
U and Th content in magnetite and Al spinel obtained by wet chemistry and laser ablation methods: implication for (U–Th) ∕ He thermochronometer
Marianna Corre, Arnaud Agranier, Martine Lanson, Cécile Gautheron, Fabrice Brunet, and Stéphane Schwartz
Geochronology, 4, 665–681, https://doi.org/10.5194/gchron-4-665-2022,https://doi.org/10.5194/gchron-4-665-2022, 2022
Short summary
Supergene phases from ferruginous duricrusts: non-destructive microsampling and mineralogy prior to (U-Th)/He geochronological analysis
Karina Patricia Prazeres Marques, Thierry Allard, Cécile Gautheron, Benoît Baptiste, Rosella Pinna-Jamme, Guillaume Morin, Ludovic Delbes, and Pablo Vidal-Torrado
Geochronology Discuss., https://doi.org/10.5194/gchron-2022-9,https://doi.org/10.5194/gchron-2022-9, 2022
Preprint withdrawn
Short summary

Related subject area

Geochronology
Provenance, protolith and metamorphic ages of jadeite-bearing orthogneiss and host paragneiss at Tavagnasco, the Sesia Zone, Lower Aosta Valley, Italy
Jane A. Gilotti, William C. McClelland, Simon Schorn, Roberto Compagnoni, and Matthew A. Coble
Eur. J. Mineral., 35, 645–658, https://doi.org/10.5194/ejm-35-645-2023,https://doi.org/10.5194/ejm-35-645-2023, 2023
Short summary

Cited articles

Aleva, G. J. J. (Ed.): Laterites: Concepts, Geology, Morphology and Chemistry, International Soil Reference and Information Centre, Wageningen, the Netherlands, 1994. 
Allard, T., Gautheron, C., Riffel, S. B., Balan, E., Soares, B. F., Pinna-Jamme, R., Derycke, A., Morin G., Bueno, G. T., and Nascimento, N.: Combined dating of goethites and kaolinites from ferruginous duricrusts. Deciphering the Late Neogene erosion history of Central Amazonia, Chem. Geol., 479, 136–150, https://doi.org/10.1016/j.chemgeo.2018.01.004, 2018. 
Ambrosi, J. P., Nahon, D., and Herbilon, A. J.: The epigenetic replacement of kaolinite by hematite in laterite. Petrographic evidence and the mechanisms involved, Geoderma, 37, 283–294, https://doi.org/10.1016/0016-7061(86)90030-3, 1986. 
Amouric, M., Baronneta, A., Nahon, D., and Didier, P.: Electron microscopic investigations of iron oxyhydroxides and accompanying phases in lateritic iron-crust pisolites, Clay. Clay Miner., 34, 45–52, 1986. 
Anand, R. R. and Gilkes, R. J.: Variations in the properties of iron oxides within individual specimens of lateritic duricrust, Aust. J. Soil Res., 25, 287–302, https://doi.org/10.1071/SR9870287, 1987. 
Download
Short summary
We proposed a new non-destructive mineralogical methodology on sub-millimeter grains that allows us to quantify the hematite and goethite content and hematite / goethite ratio of grains prior to (U–Th) / He geochronological analysis. (U–Th) / He data performed on different aliquots with different acquisition times show no remarkable differences in age, opening a new way to investigate the (U–Th) / He data evolution in supergene lateritic duricrusts.