GNGTS 2018 - 37° Convegno Nazionale

40 GNGTS 2018 S essione 1.1 breccias (Facies 3) with cm-wide grains. Facies 3 is transitional to the damage zone and encompasses significant volumes of damaged rock exposed up to several hundreds of meters from themain fault. Due to internal heterogeneities, the loose fault brecciawas further subdivided into 3 sub-facies as follow: 1) Facies 3a consists of a coherent/uncoherent loose mosaic breccia formed by elongate cm-grains; 2) Facies 3b corresponds to localized deformation along minor fault planes with associated cataclasites and ultracataclasites; and 3) Facies 3c is composed by m-wide blocks (lithons) often bounded by minor faults and characterized by decimetric-spaced fractures (Fig. 1). Fig. 1 - (A) View of the Monte Marine fault zone from the village of Teora and detail on Facies 1, Facies 2 and Facies 3 observed in the field; (B) Sub-classification of Facies 3 in Facies 3a, 3b and 3c.