| Echkar Formation | |
|---|---|
| Stratigraphic range: Late Albian-Cenomanian ~ | |
| Type | Geological formation |
| Unit of | Tegama Group |
| Underlies | Farak Formation |
| Overlies | Elrhaz Formation |
| Lithology | |
| Primary | Sandstone |
| Other | Claystone |
| Location | |
| Coordinates | 17°54′N 5°36′E / 17.9°N 5.6°E |
| Approximate paleocoordinates | 2°48′N 0°24′E / 2.8°N 0.4°E |
| Region | Agadez Region |
| Country |  Niger |
| Extent | Iullemmeden Basin |
| Type section | |
| Named for | Echkar, Aderbissinat |
  Echkar Formation (Niger) | |
The Echkar Formation is a geological formation comprising sandstones and claystones in the Agadez Region of Niger, central Africa.