Roofing Slates of the World, part IV
10/21/2015 2 Comments
I’ve been working on a poster summarizing the main roofing slate outcrops in the World. It compiles the location of the outcrops together with a new classification of roofing slates taking into account the color and the petrology. For example, the lithotype B1 corresponds to the black-grey metamorphic slates, the most common type, while R1 would correspond to also metamorphic slates but with purple-red colors.