Evaluation for Hydrocarbon Potential of Volcanic Rocks in Southern Sindh

Abstract

There is a big subsurface area in southern Sindh occupied mainly by the volcanic rocks. They are said to be stratigraphically equivalent and lithologically similar to the Deccan Traps. The area of their occurrence in the southern part of Lower Indus Basin is spread over 30,000 sq. Km (Figure 1). The range of their thickness is upto 300 m. A number of articles have been published about the geology of Deccan Traps and their associated rocks in Sindh.
Occurrence of commercial hydrocarbon deposits in volcanic rocks are reported from many parts of the world, for example, the famous Rattle Snake Hills oil field of Washington U.S.A (Levorsen, 1967). This led the authors to investigate volcanics of Sindh.