Data on mineral-petrographic features, physical properties related to petrogenetic processes, as well as manufacturing, of the Nostra Signora di Tergu church, were studied.The pyroclastites/ignimbritites were used as construction materials: They are affected by greater alteration due to the different mineral/chemical composition, mainly including glass (>70%), and physical features (higher porosity, 20-45%) due to a variable welding degree. Chemical alteration is not always evident since is more slow than the physical degradation (with macroscopic forms of pitting, exfoliation, alveolation).
PROVENIENZA E PROCESSI DI ALTERAZIONE DELLE IGNIMBRITI DELLA CHIESA DI NOSTRA SIGNORA DI TERGU (SARDEGNA SETTENTRIONALE) / Piroddi, Giulia; Columbu, Stefano; Palomba, Marcella; Sitzia, Fabio. - (2015), pp. 1-70.
PROVENIENZA E PROCESSI DI ALTERAZIONE DELLE IGNIMBRITI DELLA CHIESA DI NOSTRA SIGNORA DI TERGU (SARDEGNA SETTENTRIONALE)
Marcella Palomba;
2015
Abstract
Data on mineral-petrographic features, physical properties related to petrogenetic processes, as well as manufacturing, of the Nostra Signora di Tergu church, were studied.The pyroclastites/ignimbritites were used as construction materials: They are affected by greater alteration due to the different mineral/chemical composition, mainly including glass (>70%), and physical features (higher porosity, 20-45%) due to a variable welding degree. Chemical alteration is not always evident since is more slow than the physical degradation (with macroscopic forms of pitting, exfoliation, alveolation).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
