Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
In-situ micro-raman spectroscopic analysis of handprints in Maltravieso cave (Cáceres), Spain
Year:2015
Research Areas
  • Raman spectromety,
  • Conservation of the cultural heritage
Information
Abstract
Maltravieso Cave (Cáceres, Spain) has an important Early Paleolithic Rock Art including an interesting group of handprints. The typology, distribution, techniques and chronological context of the handprints has been studied previously. In this paper we are going to use a non-destructive technique to analyze the mineralogical composition of the base rock and the paintings. When cave paintings must be analyzed, non-destructive portable instruments are the best option since avoid any contact with the artifacts and thereby prevent any damage. The portable Micro-Raman spectrometer (DeltaNu®) used was an Inspector Raman Delta Nu Raman analyzer that was fitted with a 785 nm diode laser whose maximum output power at the source was 120 mW and a thermoelectrically cooled charge-coupled detector with a range of 200-2000 cm-1.The integration time for recording the spectra was 10 seconds at a resolution of 8 cm-1. In order to increase signal/noise ratio 20 spectra were recorded. Dolomite (CaMg(CO3)2) is the main composition of the walls of the cave. The rock also has some veins of alpha-hematite (alpha-Fe2O3). The identification of the composition of the handprint is rather difficult since all of them are cover with a layer of calcium carbonate (CaCO3). However in some points of the red pigment hematite signals have been identified.
International
Si
Congress
Non-destructive and microanalytical techniques in art and cultural heritage (TECHNART 2015)
970
Place
Catania (Italia)
Reviewers
Si
ISBN/ISSN
Start Date
27/04/2015
End Date
30/04/2015
From page
To page
Participants
  • Autor: Sagrario Martínez-Ramírez (IEM-CSIC)
  • Autor: Diego Alejandro Moreno Gomez (UPM)
  • Autor: Ana Maria Garcia Ruiz (UPM)
  • Autor: Juan Carlos Aguilar (CUPARQ (Gobierno de Extremadura))
  • Autor: Hipólito Collado ((CUPARQ, Gobierno de Extremadura))
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Bioingeniería y Materiales (BIO-MAT)
  • Departamento: Física Aplicada e Ingeniería de Materiales
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