The Rosso Asiago and Verdello
The Rosso Asiago, like that of Trent, is a biomicrite. Red Ammonite (Jurassic medium sup. Pp.)it has a thickness varying between 10 and 20 meters, the bottom is made up of micritic limestones and carnicio rosy red brick, rich in fossils (Phylloce-ras), nodular enough(Ammonitico inf.) the paleogeographic evolution of the Plateau of Trent, now corresponding to the Venetian Prealps West, begins in the Lower Lias with the establishment of a broad carbonate platform type Bahamian where rapid subsidence was balanced by an active sedimentation.
It was the so-called tidal flats or tidal whose depths could emerge periodically and then sinking under the water again. During this period there was the deposizone of "Grey Limestone Noriglio" of the Lower and Middle Lias.
The presence of areas where emergency of some importance is well documented from fingerprints found at the dinosauriane Lavini Marco at Rovereto.
Even the plants found within the nembro Rotzo and described already in 1764 by Abbot Augustine's Well, was born and lived in Rotzo Asiago (1732-1798), the first geologist who deals directly stones of the Plateau, and then studied in detail by De Zigno clearly indicate a terrestrial environment.
While the layers Lithiotis problems , typical of the Grey Limestone, are a clear expression of a marine environment. This state of precarious balance between land and sea, however, was about to come to an end towards the end of the Jurassic, when it was the sinking of the areas surrounding the platform of Trento, a phenomenon that led to the formation of the basins Lombard (west) and Belluno (to the east).
He stood in the middle then the so-called Plateau of Trento.
Central Plateau of the Seven Communes, in fact, the next Red Ammonite Veronese rests directly on the underlying Grey Limestone. Since the end dell'Aaleniano (locally even before) the rate of subsidence and sedimentation suffered a sudden interruption, while the central part of the platform that now corresponds to the Seven Towns, was an area emerging in the form of a long, flat island, from the beginning of Toarciano. Si find attached the sheets with the CE tests. Note that the strength of the Asiago Red improves after cycles of freezing and thawing as the microfatture material oxidize and harden with heat shock and increase therefore the resistance.
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