. That revised age is adopted here. The Barail
Group (Jenam and Renji Formations) consists of medium to fine grained sandstones with alternating siltstones and mudstones. Jenam
rocks are mainly siltstones, silty mudstones, and sandstones (Khan,
1978), whereas the Renji Formation consists of fine-grained sandstones alternating with siltstones, and calcareous and carbonaceous
mudstones containing a few coal lenses (Reimann, 1993).