Skip to main content
Heritage Science
Fig. 9 | Heritage Science

Fig. 9

From: Characterisation of materials and techniques in first archaeological findings of Nasca wall paintings

Fig. 9

a FTIR Spectrum obtained from the white layer of 06R sample which is characteristic of amorphous silica (470, 797, 1105, 1633, 2921, 3413 cm−1). b FTIR Spectrum from the white layer of 17R sample showing presence of gypsum (3545, 3405, 1685, 1621, 1116, 670 et 601 cm−1) and probably quartz (777, 785 cm−1) and clay (1032, 950 cm−1)

Back to article page