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Título: | Further progress in the study of epsilon iron oxide in archaeological baked clays |
Autor: | López-Sánchez, Jesús CSIC ORCID; Palencia-Ortas, A.; Campo, Ángel Adolfo del CSIC ORCID ; McIntosh, G. CSIC ORCID; Kovacheva, M.; Martín-Hernández, F.; Carmona, N. CSIC ORCID; Rodríguez de la Fuente, Óscar; Marín, Pilar CSIC ORCID; Molina-Cardín, A.; Osete, María Luisa CSIC ORCID; AMPHIBIAN Project ID:720853 | Fecha de publicación: | 18-jul-2020 | Editor: | Elsevier BV | Citación: | Physics of the Earth and Planetary Interiors 307 (2020) | Resumen: | [EN] The occurrence of ε-FeO in archaeological samples that have been subjected to high temperatures is gradually being detected by the use of micrometric structural characterization techniques. This work provides new information by revealing that the ε-FeO is formed as a response to temperature, the aggregation state and the position within the baked clay with respect to the nearest heat source. In addition, depending mainly on the atmospheric environment, the temperature reached by the combustion structure, the distance from the heating source and the particle aggregation, other iron oxide magnetic phases are produced. In the baked clay studied here, hematite is found over the whole range of samples studied but its magnetic contribution is negligible. Magnetite is observed at the sample surface, probably due to local atmospheric environment closest to the combustion source. Maghemite is found at all depths up to 6 cm below the sample surface. ε-FeO has a limited distribution, found within 2–3 cm of the sample surface. Furthermore, the viability of this compound as a palaeofield marker has been evaluated in both archaeological and synthetic samples. The results indicate that ε-FeO is able to register the direction of the magnetic field. Linear palaeointensity plots have been obtained in synthetic samples, although the value of the palaeofield could be, sometimes, overestimated. | Versión del editor: | http://dx.doi.org/10.1016/j.pepi.2020.106554 | URI: | http://hdl.handle.net/10261/261357 | DOI: | 10.1016/j.pepi.2020.106554 | Identificadores: | doi: 10.1016/j.pepi.2020.106554 issn: 0031-9201 |
Aparece en las colecciones: | (ICMM) Artículos (IGEO) Artículos (ICV) Artículos |
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