During reading the paper, I get confused for the para given as under:

In fact, high values of porosity and permeability characterize fault damage zones in low porosity carbonate rocks, while the fault cores can act as fluid barriers (Cello et al., 2001; Ghisetti et al., 2001; Rawling et al., 2001; Agosta

and Kirschner, 2003; Agosta et al., 2008; Kim and Sanderson, in press;

Molli et al., in press). Conversely, in high porosity carbonates the fault

cores can form fluid conduits, in which the main slip surfaces enhance

the fault-parallel fluid flow, surrounded by fault damage zones

characterized by porosity reduction, due to deformation banding,

which behave as seals for cross-fault fluid flow (Tondi et al., 2006;

Tondi, 2007).

Thanks for valuable comments to clear the confusion.

With best regards

IJAZ