Barata, CarolinaCruz, António JoãoRocha, Fernando Tavares2016-04-062016-04-062012BARATA, Carolina; CRUZ, António João ; ROCHA, Fernando Tavares - Sobre os materiais utilizados na talha da época barroca do noroeste de Portugal - primeiros resultados. In I Encontro Luso-Brasileiro de Conservação e Restauro, Porto, Portugal, 26-27 Setembro 2011. VASCONCELOS E SOUSA, Gonçalo; VIEIRA, Eduarda (eds.) - Actas do I Encontro Luso-Brasileiro de Conservação e Restauro. Porto, 2011. [Porto: Universidade Católica Portuguesa], 2012. p. 40-50http://hdl.handle.net/10400.14/19575Aiming to contribute to the knowledge of Portuguese gilded wood from the Baroque, the first results of a study of 18 retables belonging to Oporto are presented. In order to identify the materials and the techniques used in gesso, bole and gold leaf layers, optical microscopy and scanning electron microscopy were used. Anhydrite and gypsum with low concentration of impurities, bole of good quality and gold alloys with a concentration of gold usually above 90% were identified. The results suggest that recommendations found in historical documents have been followed in the majority of the cases.porAltarpieceGilded woodGessoBoleGold leafOptical microscopyScanning electron microscopyjournal article