| Label | Age (ma) | Stratigraphic Unit | Formation | Description |
| Qcx-z | 24 | Quaternary | / | slope colluvium |
| EOzl | 92 | Tertiary | Zalumah | micritic limestones |
| Oaq | 94 | Tertiary | Ashawq | lacustrine limestones |
| Eay | 105 | Tertiary | Aydim | bioclastic limestones |
| Edm2-3 | 110 | Tertiary | Dammam | bioclastic limestones |
| Edm1 | 113 | Tertiary | Andhur | shale and intercalated limestones |
| Ers | 120 | Tertiary | Rus | chalky dolomitic limestone and marl |