Bletterbach

The Bletterbach is a stream in South Tyrol, Italy.
The Bletterbach is cutting through deposits of the Lower Permian to the Upper Anis, namely the Bolzano Quartz Porphyry (~272 Ma), the Val Gardena Sandstone, which is famous for its fossil footprints, the Bellerophon Formation, the Werfen Formation and the Serla Dolomite of which the top of the Weißhorn consists.
The rocks in the Bellerophon Formation contain evaporites and show a transgression, the stratigraphically lower sediments have evidence of terrigenous influence, the upper sediments got mainly formed in a marine environment.