| Group | Subgroup | Lithology |
| Siwalik Group | Upper Siwalik Subgroup (Tatrot, Pinjor and Boulder Conglomerate formations) (600 m - 2400 m) | Conglomerates, poorly indurated sandstones and pale-grey and pale-brown sandy clays |
| Middle Siwalik Subgroup (Nagri and Dhokpathan formations) (1400 m - 2000 m) | Moderately indurated sandstones and chocolate coloured clays | |
| Lower Siwalik Subgroup (Kamlial and Chinji formations) (1300 m - 1900 m) | Alternating sequence of well indurated sandstones and purple maroon clays |