Fig. 7From: Petrographic and geochemical analyses to characterise the source of built historical natural stones — a case study of the volcanic stones from historical quarries and Baoguosi Temple in the city of Ningbo, ChinaHistorical quarries of Xiaoxishi Stone (upper photo) and Meiyuanshi Stone (lower photo), both are now listed as historical relics under protection (Source: Shibing Dai)Back to article page