Читать книгу Monument Future - Siegfried Siegesmund - Страница 47

Low grade metamorphosed crystalline limestone (marble, fine grain-size). Colour: light grey ground sometimes with pinkish or purplish spots and coarse grained veins. Mineral: calcite, opaque. Decay morphologies: surface erosion, sulphate skin formation. Geology: limestone of organic origin (Devonian) of the “Paleozoico carnico”. Quarry: near Pierabec, north of Forni Avoltri (Udine province). Use: mainly polished slabs for cladding (Palazzo della Provincia, atrium, G. Muzio 1942, Milan). Other building stones, coming from the same area in the north-western corner of this province, were also used in the 20th century architecture (Rosso Porfirico, upper Jurassic of Verzegnis or Persichino, upper Devonian of Timau).