In this paper we illustrate the stratigraphic and structural features the Sibillini Mountains on the basis of a 1:40.000 geological. Following the “Foglio 132 Norcia” (Geological Map of Italy at1:100.000 scale; SCARSELLA, 1941), this new geological map is the cartographic document that covers the whole area of the Mts. This area is key for understanding the geological evolution the external zones of the Apennine orogen, mostly owing to pronounced structural elevation of the Apennine ridge at the Mts. area. This allowed us to: a) carry out stratigraphic and analyses for the Umbria-Marche sedimentary cover to the units; b) analyze the paleo-tectonic setting of this sector of the-Adriatic continental margin and the behavior of pre-existing during the subsequent deformation events; c) investigate depth the major Apennine thrust front (“Sibillini Mountains”) exposed in several sites (Fiastrone, Ambro, Tenna and valley) and its relationship with the units of the adjacent foredeep.
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Pierantoni et al. (2013) studied this question.