PTB (Permian-Triassic Boundary) succession in the western Dolomites of the Southern Alps

In the Southern Alps, the PTB(Permian-Triassic Boundary) is settled within the basal part of the Werfen Formation(Changhsingian-Induan Tesero Member) conformably overlying the Bellerophon Formation, although temporal gap between the formations is a subject of dispute.The succession in the Tesero and Bulla sections of the western Dolomites is designated as the hypostratotype and parastratotype of the PTB, respectively and most intensively studied stratigraphically, paleontologically, geochemically and magnetostratigraphically(e.g., Magaritz et al., 1988;Scholger et al., 2000;Farabegoli et al., 2007) .Both sections are well exposed along the road surrounded by a magnificent panorama of the Southern Tyrol.Repeated detailed field works by many earth scientists are recorded directly on a rock face as markings of a sample level with various manners, round holes, cylindrical tracks and others.