Table 2 – Data from organic matter analysis. Details on the analytical methods can be found in Appendix A4, A5, A6. The first column indicates the locality of sampling and the sample label; the second column indicates whether the sample was collected in the outcrop or it derives from cores; in this case the depth from the drilling site elevation is provided; the third column indicates the vitrine reflectance values (VRo); the fourth column indicates the values of the Methylene versus Methyl ratio (CH2/CH3); the last column provides the density values of the samples. Outcrop/ well (m) VRo% CH2/CH3 Density (g cm-3) Pagliara di Sassa locality AQ1 AQ2 AQ3 15 24 26.6 0.22±0.04 0.27±0.04 0.24±0.02 3.2 4.6 7.4 2.1 2.3 2.7 Sassa locality AQ13 AQ14 AQ15 AQ16 5 5.2 10.2 10.4 0.29±0.04 0.27±0.04 0.23±0.02 0.23±0.03 2.4 3.2 3.1 3.6 1.6 1.5 1.8 1.7 Campo di Pile locality AQ27 AQ7 AQ8 AQ9 outcrop 7.5 20.2 19.9 _ 0.24±0.01 0.22±0.02 0.19±0.02 3.2 3.4 8.4 3.3 2.6 2.1 2.7 1.8 Ponte Peschio locality AQ18 AQ17 AQ22 outcrop outcrop outcrop 0.21±0.03 0.21±0.03 0.14±0.04 2.6 6.2 4.1 1.7 1.5 2 sample