Table 2 The petrographic modal composition of the AEB_IIIG sandstone microfacies.
Components (%) | Quartz | Lithic Fragments | Feldspars | Glauconite | Quartz Cement | Carbonate Cement | Pyrite | Clays | Point Count Porosity | Total |
|---|---|---|---|---|---|---|---|---|---|---|
Quartz arenite (MF1) | ||||||||||
Min | 50 | 0 | 0 | 0 | 0 | 0 | 4.4 | 0.8 | 5.2 | |
Max | 70 | 0 | 3.6 | 11.2 | 6.4 | 0 | 14.4 | 9 | 22 | |
Avg | 64 | 0 | 1.4 | 3.9 | 3.5 | 0 | 7.2 | 4.3 | 15.7 | 100.0 |
Calcareous quartz arenite (MF2) | ||||||||||
Min | 45 | 0 | 0 | 0 | 0 | 7 | 2.4 | 3 | 1.8 | |
Max | 60.8 | 3.2 | 6.04 | 6.4 | 8.4 | 12 | 7 | 4.8 | 21.6 | |
Avg | 56.3 | 1.3 | 5 | 3.8 | 3.5 | 8.5 | 4 | 3.5 | 14.1 | 100.0 |
Glauconitic quartz arenite (MF3) | ||||||||||
Min | 42 | 0 | 3 | 10 | 6 | 0 | 3 | 5 | 18 | |
Max | 45 | 0 | 5 | 14 | 8 | 3 | 6 | 6.6 | 20 | |
Avg | 46.2 | 0 | 3.7 | 12 | 7 | 1.4 | 5 | 5.7 | 19 | 100.0 |
Quartz wacke (MF4) | ||||||||||
Min | 33.2 | 0 | 0 | 0 | 0 | 0 | 2 | 46 | 9.2 | |
Max | 37 | 2 | 0 | 0 | 2 | 0 | 5.2 | 52.4 | 12 | |
Avg | 35.6 | 2 | 0 | 0 | 1 | 0 | 3 | 48 | 10.4 | 100.0 |
Lithic wacke (MF5) | ||||||||||
Min | 34.4 | 12.8 | 0 | 1 | 0 | 0 | 7 | 27.2 | 2.4 | |
Max | 41 | 15 | 0 | 5 | 0.8 | 3 | 12.4 | 34.4 | 5 | |
Avg | 37.5 | 13.9 | 0 | 3 | 0.4 | 1.7 | 9.1 | 30.6 | 3.8 | 100.0 |
Lithic arenite (MF6) | ||||||||||
Min | 51.6 | 19.2 | 0 | 0 | 7.2 | 0 | 2 | 3.8 | 5 | |
Max | 60 | 21 | 0 | 1.2 | 14.4 | 1 | 5 | 4.8 | 8 | |
Avg | 56.5 | 19.4 | 0 | 0.6 | 9.8 | 0.5 | 2.7 | 4.5 | 6 | 100.0 |
Mudstone (MF7) | ||||||||||
Min | 4.4 | 0 | 0 | 0 | 0 | 0 | 0 | 87 | 3 | |
Max | 7.3 | 2 | 0 | 1.2 | 0 | 0 | 0 | 91.2 | 4.4 | |
Avg | 6.2 | 1 | 0 | 0.8 | 0 | 0 | 0 | 88.6 | 3.4 | 100.0 |
