| Título: | The first direct ESR dating of a hominin tooth from Atapuerca Gran Dolina TD-6 (Spain) supports the antiquity of Homo antecessor |
| Autores: | Duval, Mathieu ; Grün, Rainer ; Parés, Josep M. ; Martín-Francés, Laura ; Campaña, Isidoro ; Rosell, Jordi ; Shao, Qingfeng ; Arsuaga, Juan Luis ; Carbonell i Roura, Eudald ; Bermúdez de Castro, José María |
| Tipo de documento: | texto impreso |
| Editorial: | Elsevier, 2018-08 |
| Dimensiones: | application/pdf |
| Nota general: |
cc_by_nc_nd info:eu-repo/semantics/openAccess |
| Idiomas: | |
| Palabras clave: | Estado = Publicado , Materia = Ciencias: Geología: Paleontología , Tipo = Artículo |
| Resumen: |
The present study reports the results of the first direct Electron Spin Resonance (ESR) dating study of Homo antecessor, the oldest known hominin species identified in Western Europe. The analysis of a tooth (ATD6-92) from TD6 unit of Atapuerca Gran Dolina (Spain) following a “semi non-destructive” procedure provides a final age estimate ranging from 624 to 949 ka, which covers all possible uranium uptake scenarios. Last, the additional magnetostratigraphic data collected within TD6 enables to further constrain the initial ESR chronology and to propose an age of between 772 and 949 ka for Homo antecessor, in agreement with previous dating works. Although our new results do not refine the existing chronology of TD6 unit, they nevertheless support the antiquity of H. antecessor, which pre-dates the estimated divergence age of modern and archaic human lineages based on genetic evidence. This work illustrates the challenges of dating human teeth by means of the ESR method, with the main pitfalls that are sometimes inherent to this specific application (e.g., systematic ?CT-scanning of fossil hominin teeth; limited knowledge about the original sedimentary environment for teeth coming from old excavations; heterogeneous spatial distribution of the U-series elements in dental tissues). We identified several sources of uncertainty that may directly impact the accuracy of the age result. In particular, a slight contamination of dentine ( |
| En línea: | https://eprints.ucm.es/50953/1/The%20first%20direct%20ESR%20dating%20of%20a%20hominin%20tooth%20from%20Atapuerca%20Gran%20Dolina%20TD-6%20%28Spain%29%20supports%20the%20antiquity%20of%20Homo%20antecessor.pdf |
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