| AGE AND ITS FORMATION | STRATIGRAPHIC SEQUENCES | |
| Recent Pleistocene sedimentary formations | Alluvial deposits | |
| Superficial Deposits | ||
| Cenozoic volcanic rocks | Composite basaltic volcanoes, explosion craters and associated tuffs | |
| Basaltic shield volcanoes | ||
| Basaltic to phonolitic plugs | ||
| Tertiary sedimentary formations | Calcareous lacustrine sediments | |
| Red earth (lateritic soil) | ||
| Paleozoic and Mesozoic sedimentary formation | Nubian sandstone formation | |
| Amaki Series | ||
| Paleozoic and Mesozoic igneous rocks | Dyke swarms | |
| Igneous ring complexes | ||
| Precambrian (Basement complex) | Ultrabasic rocks | |
| Bayuda formation | Absol Series | |
| Rahaba Series | ||
| Kurmut Series | ||
| Abu Harik Formation | ||