FACIES EVALUATION, DEPOSITIONAL ENVIRONMENT AND PALAEOFLOW OF THE LOWER SIWALIK SUBGROUP, RAMNAGAR, JAMMU, INDIA

Eight lithofacies and three facies associations were documented in two representative stratigraphic sections of the Lower Siwalik Subgroup of Ramnagar area in Jammu region of Northwest Himalaya to interpret the depositional environment. The area is represented by sandstone, mudstone and siltstone alternations. The lithosections are made up of cross to parallel stratified, fine to coarse grained sandstones, parallel laminated siltstones with clay inter-beddings and occasional clay pockets in sandstones. The facies associations are interpreted as the deposits of fine-grained meandering, flood flow dominated meandering and floodplain areas associated with the meandering river system in a low gradient basin environment.