Micro-Raman spectroscopy was employed for the analysis of samples collected from the shelters Campo Cerda 1, Angostura Blanca and Campo Moncada 1 located in Piedra Parada valley, Chubut province, Argentinian Patagonia. Different coloured layers, degradation products and rock supports were analysed. Haematite (α-Fe₂O₃), goethite (α-FeOOH), green earth and gypsum (CaSO₄ ·2H₂O) were responsible for the main colouration of the pigmented layers together with other components. Gypsum, Ca-oxalates and calcite were the major degradation materials affecting the rock paintings and the rock support. Different types of silicates, apatite [Ca₅(PO₄)₃(F,Cl,OH)] and goethite were positively characterized in the rock support. Point analysis and micro-Raman mappings contributed towards a better understanding of the materials and layer sequencing of the samples extracted.

中文翻译：

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用于分析阿根廷巴塔哥尼亚丘布特省彼德拉帕拉达山谷岩石艺术庇护所中发现的材料的显微拉曼光谱

使用显微拉曼光谱分析从位于阿根廷巴塔哥尼亚丘布特省彼德拉帕拉达山谷的 Campo Cerda 1、Angostura Blanca 和 Campo Moncada 1 避难所收集的样品。分析了不同颜色的层、降解产物和岩石支撑。赤铁矿 (α-Fe ₂ O ₃ )、针铁矿 (α-FeO​​OH)、绿土和石膏 (CaSO ₄ ·2H ₂ O) 与其他成分一起负责着色层的主要着色。石膏、草酸钙和方解石是影响岩画和岩石支架的主要降解物质。不同类型的硅酸盐、磷灰石 [Ca ₅ (PO ₄ ) ₃(F,Cl,OH)] 和针铁矿在岩石支架中具有积极的特征。点分析和显微拉曼映射有助于更好地了解提取样品的材料和层序。