Age | Formation | Lithology |
Recent |
| Alluvium; sand, silt and clay of older alluvium, younger flood plain deposits, channel fills etc. |
Sub-Recent |
| Laterites/recent gravel and conglomerate beds. |
Up. Permian to Lower Triassic | Kamthi (Upper) = Raniganj | Conglomerates, pebbly and ferruginous sandstones and red shales. |
Kamthi (Lower) = Barren measures | Gray shales, carbonaceous shales, sandstone, clay and iron stone nodules. | |
Lower Permian | Barakar | Gray sandstone, carbonaceous Shale, silt stone with thick coal seams and fire clay. |
Karharbari | Black carbonaceous sandstone, pebble bed, coal seams. | |
Talchir | Dimictite, greenish sand stone, olive and chocolate shales, rhythmites. | |
------------------- | ------------------------------ | --Unconformity-------------------------------- |
Precambrian |
| Granite gneisses, amphibolites, migmatites etc. |