Читать книгу Monument Future - Siegfried Siegesmund - Страница 144

For the general registration of the rock applied and its deterioration assessment, the recommendations of the working group “Natural Stones and Weathering” (2019) of Aachen University were followed. It 108was not possible to map the entire external façade due to time constrains of the study, therefore only four sections of the building were mapped.

There was some controversy about the origin of the rock applied. In the Uruguayan small geological community, it was believed it was a facies of Pan de Azúcar Pluton. This pluton, studied in detail by Oyhantçabal (2005), is a km-size syenitic, quartz-syenitic and granitic circular intrusion, historically exploited with ornamental purpose (Morales Demarco, 2012). All efforts to localize the variety supposdly applied in Palacio Salvo in the area of the pluton were unsuccessful.

At the beginning of this study, 15 blueprints of the entire granitic façade were found by FADU in the General Archive of the Nation (Archivo General de la Nación). These blueprints have the localization and dimensions of around 1,000 pieces of the granitic façade of Palacio Salvo (the external façade and the façade of the passage, not studied in the present work), and some inscriptions written in German: Kösseine Granit Poliert, Grasyma Wunsiedel, Januar 1925.

The ICG team compare the dimensions of the pieces applied in Palacio Salvo, with those stated in the blueprints. The match is perfectly accurate. Simultaneously, a communication with the German company allowed the confirmation as the providers of the rock and the undoubtedly identification as Kösseine Granite (Figure 1).