Porphyry
From lava to..road
How often have you driven along a road paved with blocks of porphyry without realising that this rock was formed from the rapid cooling of lava! This mostly reddish volcanic rock in the Bolzano province makes up a thick bedrock which is the base of the sedimentary sequence. It can be seen along the motorway north of Bolzano or on the Resciesa ridge in Val Gardena.
Main category:
Geology
Subcategory:
Rocks
Epoch:Perm
Area(s):OrtiseiRasciesa
GPS coordinates:@11.66906,46.60077