Abstract

The petroliferous NNW-SSE trending elongate and arcuate Cambay Basin predominantly contains Quaternary and Tertiary sediments over Late Cretaceous Deccan Trap. In the northern part, however, drilled wells indicate that this sediment package directly overlies Mesozoics above Precambrian basement. The basin has been perceived as a failed rift arm of a four-way mega fracture system formed near the present-day west coast of India. This fracture system is considered to have originated due to the impingement of Reunion Mantle Plume during the Late Cretaceous on Indian lithosphere, which was moving northwards subsequent to the breakup of Gondwanaland.