Assessing bone transformation in late Miocene and Plio‐Pleistocene deposits of Kenya and South Africa - Spectroscopie, Modélisation, Interfaces pour L'Environnement et la Santé Accéder directement au contenu
Article Dans Une Revue Archaeometry Année : 2019

Assessing bone transformation in late Miocene and Plio‐Pleistocene deposits of Kenya and South Africa

Résumé

Bone reactivity offers a potential way to record local physical–chemical conditions prevailing in fossilization environments and archaeological sites. In the present study, a series of fossil bone samples from the karstic environments of the Bolt's Farm cave system (Cradle of Humankind, South Africa) and from fluvio‐lacustrine environments of the Tugen Hills (Gregory Rift, Kenya) is analysed. The chemical composition and infrared and nuclear magnetic resonance (NMR) spectroscopic properties of fossil samples point to a transformation of the biogenic apatite and formation of secondary apatite. Depending on the sample, the secondary apatite corresponds to a carbonate‐bearing hydroxy‐ or fluor‐apatite. The maximum fraction of secondary apatite is close to 60%, coinciding with previous observations in experimental alteration of bone in aqueous solutions and suggesting that a fraction of pristine biological apatite is likely to be preserved. The present results also suggest that the acetic acid treatment of fossil samples moderately increases their average crystallinity but may dissolve carbonate‐rich domains of secondary apatite.

Domaines

Paléontologie
Fichier principal
Vignette du fichier
Aufort et al. - Assessing bone transformation in late Miocene and .pdf (897.78 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02097000 , version 1 (11-04-2019)

Identifiants

Citer

Julie Aufort, Dominique Gommery, Christel Gervais, Loïc Segalen, Nathalie Labourdette, et al.. Assessing bone transformation in late Miocene and Plio‐Pleistocene deposits of Kenya and South Africa. Archaeometry, 2019, 61 (5), pp.1129-1143. ⟨10.1111/arcm.12471⟩. ⟨hal-02097000⟩
327 Consultations
229 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More