NORIAN FOSSILS CONSERVATIVE RESTORATION EXAMPLES FROM ARGILLITI DI RIVA DI SOLTO AND CALCARE DI ZORZINO (BERGAMO, ITALY)

摘要

This poster describes techniques, tools and chemical products used to restore and preserve fossils in conformity with principles of "Carta del restauro dei fossili" (Bor-selli & al., 1998). All demonstrative examples are Triassic paleontological specimens collected in Bergamo area preserved on rocks and prepared in the 1970s. Now they are stored in the Museo Civico di Scienze Naturali "E. Caffi" of Bergamo. During the periodic check up, we examined conditions of the fossils and their matrix. The preservation state and the problems related to every specimen are carefully analyzed in our laboratory. Analytical procedures, tools and products, registered in the old restoration cards, were updated when necessary. Few problems were encountered and categorized in two groups as illustrated here.