| Age | Group | Formation | Local Unit | Lithologic description | Thickness (m) |
| Recent |
|
| Alluvium | Unconsolidated sand, silt and clay |
|
| Plio-Miocene | Tipam | Dupi Tila Sandstone | Lichubagan Sandstone | Medium to fine grained yellowish brown, Moderately compacted, Massive sandstone with the presence of quartz pebbles with some clay balls | 390+ |
| Middle Miocene | Girujan Clay | Changrachari shale | Bluish fray mudstone with greenish gray thickly laminated shale | 556 | |
| Tipam Sandstone | Chomdraghona Sandstone | Medium to coarse grained, reddish brown, thickly bedded, moderately compacted ferruginous sandstone | 280 | ||
| Early Miocene | Surma | Bokabil | Baraichari shaley-sandstone | Bluish gray, thin to thickly laminated shale alternated yellowish brown, medium to fine grained sandstone | 973 |
| Bhuban | Wagga sandstone | Yellowish brown, medium to fine grained massive sandstone with shale and siltstone | 115 | ||
| Shilchari sandstone and shale | Light gray, fine to medium grained, moderately compact siliceous sandstone alternated with bluish gray, moderately compacted, thinly to thickly laminated shale | 778+ | |||
| Base not Found. | |||||