Evolution of gas bearing structures in Jaisalmer Basin (Rajasthan), India

Evolution of the Jaisalmer Basin in terms of the structure and kinematics, are not well understood. This basin contains sediments ranging from Neoproterozoic age to Recent. Each tectonic unit of the basin has different evolutionary history. The basin has passive margin setting since inception and has been affected by regional tectonics of Dharwar, Aravalli and Satpura orogeny since Archean to Proterozoic periods. Present study is focused on the tectonic evolution of different gas bearing structures located over Jaisalmer Mari High. This high was evolved in Late Cretaceous-Paleocene time, with sinistral strike-slip movement in NNW-SSE to NW-SE direction, due to separation from Madagascar and Himalayan collision. Different gas bearing structures at Mari high are associated with transpressional tectonics, and thus study of these structures, will help in understanding of reservoir dynamics, as well as entrapment model of the basin.