Sub-horizontal crenulation cleavage (S2) in Filladi Grigie del Gennargentu Formation (Barbagia Unit, Internal Nappe Zone) near Tonara town, Sardinia Island (Italy). Photograph: A. Petroccia
Sub-horizontal crenulation cleavage (S2) in Filladi Grigie del Gennargentu Formation (Barbagia Unit, Internal Nappe Zone) near Tonara town, Sardinia Island (Italy).
Photograph: A. Petroccia