Page 20 - Tondietall2015

Italian Journal of Geosciences Accepted manuscript

Fig. 4 - Contoured stereonet plots of poles of compactive shear bands and faults with left- and
right-lateral sense of slip measured at Favignana (a) (from TONDI et alii, 2012). Contoured stereonet
plots of poles to faults and associated compactive shear bands measured at the Madonna della
Mazza quarry pavement (b) (from TONDI et alii, 2006).

Fig. 5 - Fault architecture at the microscale in porous carbonate grainstones (modified after
TONDI, 2007). Fault is characterized by three distinct tabular zones (Zones I, II and III) with
different texture (see text for descriptions); (upper) photomicrographs and (lower) interpretative
map. Zone I corresponds to the fault core whereas Zones II and III correspond to the damage zone.
Associated with the slip surfaces (Zone I) are open pores, in some case partially filled with calcite
cement.

Fig. 6 - Permeability measurements across five representative faults affecting the carbonate
grainstones from Favignana Insland. Legend: HR = host rock, DZ = fault damage zone, C = fault
core.

Fig. 7 - Permeability measurements across four representative faults affecting the Orfento
carbonate grainstones from Majella Mountain. Legend: HR = host rock, DZ = fault damage zone, C
= fault core.

Fig. 8 - Mean permeability values measured in the host rock and fault zones at Favignana and
Majella outcrops.

Fig. 9 - Log/Log graph showing mean air-permeability versus porosity of the host rock, the
fault core and damage zone of Favignana and Majella Mountain. The data of porosity refer to 2D
measurements.

Fig. 10 - Log/Log graph showing the relationship between Fault displacement and Fault core
permeability of the nine faults outcropping in Favignana and Majella outcrops. Fault displacement
refers to the field maximum measured value, Fault core permeability refers to the mean values.