A new multimethod approach for dating cave calcite: application to the cave of Trou du Renard (Soyons, France) - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Geochronology Année : 2024

A new multimethod approach for dating cave calcite: application to the cave of Trou du Renard (Soyons, France)

Fanny Claverie

Résumé

Abstract. A multimethod approach aimed at characterizing carbonate parietal deposits and at proposing a chronology for these carbonate crusts is described. Dating was performed by radiometric methods (C-14 for recent samples and U series) on samples that had been characterized beforehand using optical and cathodoluminescence microscopy and Fourier transform infrared microspectroscopy. For the U series, high precision on U–Th ages was achieved using liquid phase multicollector inductively coupled plasma mass spectrometry (ICP-MS) applied to large samples, while laser ablation single collector inductively coupled plasma sector field mass spectrometry (ICP-SFMS) provided information on the reliability of the sampling with a high spatial resolution. This methodology, based on the combination of these two techniques reinforced by the information obtained by the calcite characterization methods, was applied to carbonate deposits from the cave of Trou du Renard (Soyons, France). The ages obtained with the two U–Th dating techniques are comparable and illustrate that different laminae were deposited at different rates in the samples. In the future, this procedure, based on the mineralogical and geochemical characterization of the samples and their dating by radiometric methods, will be applied to the layers of parietal carbonates deposited on Palaeolithic decorated walls. When the crystallization is slow, the U/Th dating method by imaging technique is of interest, as well as that by multicollector ICP-MS in liquid phase. The development of robust dating methods on very small quantities of material will make it possible to define the chronological framework of cave rock art.

Mots clés

Fichier principal
Vignette du fichier
gchron-6-247-2024.pdf (10.1 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04615126 , version 1 (18-06-2024)

Identifiants

Citer

Loïc Martin, Julius Nouet, Arnaud Dapoigny, Gaëlle Barbotin, Fanny Claverie, et al.. A new multimethod approach for dating cave calcite: application to the cave of Trou du Renard (Soyons, France). Geochronology, 2024, 6 (2), pp.247 - 263. ⟨10.5194/gchron-6-247-2024⟩. ⟨hal-04615126⟩
0 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More