Persona:
Gavira Vallejo, José María

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0000-0002-6037-5731
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Gavira Vallejo
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José María
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2019 - 201912020 - 20211
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Fecha de finalización: 2021 × Tiene archivos: false ×

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Mostrando 1 - 2 de 2
  • No hay miniatura disponible
    Publicación
    Rock Art
    (The Royal Society of Chemistry, 2021-06-04) Hernanz, Antonio; Gavira Vallejo, José María
    An overview of representative studies on rock art paintings applying physicochemical techniques to investigate their composition is presented. Advantages and limitations of the different techniques, protocols and recommendations for sampling and proposals to deal with difficulties are discussed. Portable instrumentation and non-destructive multi-technique methodology are highly advisable. Contamination and the presence of non-pictorial materials must always be taken into account because rock art is an open-air scenario. Accretions, alterations, deterioration and possible remedies are considered. The results obtained are very useful for archaeologists and conservators. The use of new techniques and instrumentation augurs a promising future in this field.
  • No hay miniatura disponible
    Publicación
    Micro Raman Spectroscopy of Epipalaeolithic Decorated Pebbles from Arroyo Moreras 2 (Parque Darwin, Madrid)
    (The Royal Society of Chemistry, 2019-11) Hernanz, Antonio; Bueno Ramírez, Primitiva; Balbín Behrmann, Rodrigo de; Morín de Pablos, Jorge; Juana Ortín, Cristina de; Gavira Vallejo, José María
    Pigment vestiges on the three decorated pebbles from the excavation of Parque Darwin (Madrid), level 8470 ± 70 BP have been identified by Micro Raman Spectroscopy. Haematite and amorphous carbon were used as pigments. Microscopic contamination spots with ε-copper-phthalocyanine blue, have been detected. The analysis of the pigments used, together with their previously unknown chronology and open-air location, constitute a new point of reference for the technical and cultural uses of symbology among hunter-gatherers in southern Europe.