Table 2.
Lithostratigraphical subdivisions of the geology of Malta [22] and respective physical properties ([24]: 165)
| Formation | Porosity (%) |
Compressive uniaxial strength (N/mm2) (dry) | Flexural strength (N/mm2) (dry) | Member | Age |
|---|---|---|---|---|---|
| Upper coralline limestone | 2.4–32.3 | 8.8–67.2 | NA | Ġebel Imbark | Messinian |
| Tal-Pitkal | Tortonian/Messinian | ||||
| Mtarfa | Tortonian | ||||
| Għajn Melel | Tortonian | ||||
| Greensand | 23.8–32.4 | NA | NA | Tortonian | |
| Blue clay | X | X | X | Langhian/Tortonian | |
| Globigerina Limestone | 26.2–37.4 | 8.9–22.0 | 1.1–4.7 | Upper Globigerina | Burdigalian/Langhian |
| Middle Globigerina | Aquitanian/Burdigalia | ||||
| Lower Globigerina | Aquitanian | ||||
| Lower coralline limestone | 1.8–28.3 | 6.8–105.0 | NA | Il-Mara | Chattian |
| Xlendi | Chattian | ||||
| Attard | Chattian | ||||
| Magħlaq | Chattian |
X not applicable, NA not available