## 5 Results
### Petrophysical Properties
Due to its intra-crystalline porosity more interconnected with the circulating fluids, metadolostone showed significantly lower averages of 0.7 \(\pm\) 0.7%, 1.6 \(\pm\) 1.1%, 1.4 \(\pm\) 1.1% (Table 2). Similarly, marly limestone had an even lower closed porosity (0.3%). The saturation index, which expresses the volume of absorbed water compared to the volume of open pores available (i.e., difference between helium open porosity and water open porosity), and which is generally affected by the pore geometry (i.e., size and tortuosity), shows a weakly negative correlation with open porosity (Figure 12a). This parameter averaged between 87 and 92% in the less porous samples (metadolostones and marly limestones), while it was around 80-82% in the sandstone samples (Table 2). Metasilstone significantly differed from the other samples, showing a saturation index lower than 60%. The behaviour of the saturation index of lithologies can also be seen graphically in Figure 12a, which shows the porosity open to helium and the porosity open to water, in which it is observed that the population of the metadolostones samples (green in colour), are close to the line at 100%. In Figure 12b the kinetic of water absorption for total immersion is shown (Table 3). \begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline \multirow{2}{*}{**Sample**} & \multirow{2}{*}{**Lithology**} & \multicolumn{8}{c}{**Water Immersion Absorption (g)**} \\ \cline{3-10}  & & **24 h** & **48 h** & **72 h** & **96 h** & **120 h** & **144 h** & **168 h** & **192 h** \\ \hline TAP33 & \multirow{3}{*}{Laminated metadolostone (from temples)} & 0.89 & 0.92 & 0.94 & 0.96 & 0.97 & 1.11 & 0.97 & 0.98 \\ TAR3 & & 6.23 & 6.36 & 6.60 & 6.65 & 6.69 & 6.72 & 6.73 & 6.86 \\ TAR5 & & 4.85 & 5.38 & 5.39 & 6.04 & 6.70 & 7.37 & 7.84 & 7.85 \\ \hline TAC2 & Lam. dol. (quarry) & 2.64 & 2.75 & 3.01 & 3.00 & 2.99 & 2.95 & 2.94 & 2.96 \\ \hline TASC3 & \multirow{3}{*}{Laminated metadolostone (from outcrops)} & 1.35 & 1.35 & 1.51 & 1.51 & 1.51 & 1.49 & 1.53 & 1.57 \\ TASC4 & & 1.44 & 1.49 & 1.60 & 1.63 & 1.66 & 1.69 & 1.70 & 1.73 \\ TASC5 & & 2.02 & 2.14 & 2.19 & 2.24 & 2.30 & 2.29 & 2.26 & 2.44 \\ TASC6 & & 1.56 & 1.65 & 1.67 & 1.74 & 1.81 & 1.80 & 1.79 & 1.88 \\ TASC8 & & 1.97 & 2.17 & 2.19 & 2.23 & 2.28 & 2.28 & 2.30 & 2.36 \\ \hline \multicolumn{10}{c}{**Average**} & **2.55** & **2.69** & **2.79** & **2.89** & **2.99** & **3.08** & **3.12** & **3.18** \\ \hline TAP45 & \multirow{3}{*}{Breeciated metadolostone (from temples)} & 4.42 & 4.44 & 4.47 & 4.58 & 4.69 & 4.67 & 4.62 & 4.73 \\ TAR2 & & 4.36 & 4.40 & 4.42 & 4.59 & 4.76 & 4.89 & 5.05 & 5.08 \\ TAR4 & & 3.68 & 3.95 & 4.10 & 4.19 & 4.27 & 4.33 & 4.37 & 4.48 \\ TAR7 & & 6.22 & 6.57 & 6.77 & 6.83 & 6.89 & 6.97 & 6.99 & 7.12 \\ \hline TAC1 & \multirow{3}{*}{Breeciated metadolostone (from quarry)} & 1.11 & 1.55 & 1.69 & 1.58 & 1.46 & 1.49 & 1.55 & 1.62 \\ TAC3 & & 3.07 & 4.22 & 4.26 & 4.28 & 4.30 & 4.32 & 4.35 & 4.37 & 4.40 \\ \hline \multicolumn{10}{c}{**Average**} & **4.00** & **4.20** & **4.29** & **4.34** & **4.40** & **4.45** & **4.49** & **4.57** \\ \hline TAR1 & \multirow{3}{*}{Massive metadolostone (from Roman temple)} & 4.21 & 4.48 & 4.68 & 4.85 & 5.01 & 4.92 & 4.76 & 4.91 \\ TAR20 & & 3.73 & 3.77 & 4.14 & 4.16 & 4.19 & 4.17 & 4.17 & 4.53 \\ TAR22 & & 2.20 & 2.41 & 2.42 & 2.48 & 2.55 & 2.55 & 2.56 & 2.56 \\ TAR49 & & 3.46 & 3.57 & 3.69 & 3.72 & 3.74 & 3.77 & 3.79 & 3.87 \\ \hline TASC1 & \multirow{3}{*}{Massive metadolostone (from outcrops)} & 5.33 & 5.52 & 5.72 & 5.74 & 5.76 & 5.77 & 5.75 & 5.79 \\ TASC2 & & 3.04 & 3.38 & 3.40 & 3.42 & 3.44 & 3.48 & 3.52 & 3.62 \\ \hline \multicolumn{10}{c}{**Average**} & **3.66** & **3.85** & **4.01** & **4.06** & **4.11** & **4.11** & **4.09** & **4.21** \\ \hline TAP23 & \multirow{3}{*}{} & 12.78 & 13.35 & 13.40 & 14.04 & 14.67 & 15.00 & 13.98 & 14.21 \\ TAP27 & & 7.76 & 9.20 & 9.24 & 10.04 & 10.84 & 11.13 & 11.43 & 11.61 \\ TAP31 & & 15.93 & 17.