
Gypsum
White as chalk
Gypsum rock layers originate in a natural salt flat, a very shallow marine environment in a warm, dry climate. Evaporation concentrates salts in sea water until they precipitate, starting with sulphates (gypsum is CaSO4, calcium sulphate). The white layers that can be seen from the Seceda cable car are precisely the remains of these natural salt flats.
Main category:
Geology
Subcategory:
Rocks
Epoch:Perm
Area(s):Ortisei
GPS coordinates:@11.7227,46.59837