Abstract

Regional gravity anomaly map prepared incorporating ONGC vintage data along with gravity data of Bangladesh available in public domain, has brought out the hinge zone trend clearly and the same is validated from seismic data. Gravity modelling shows that there is a depression in the middle of the area under Kolkata-Mymensingh gravity high which may be interpreted as some paleo-sediments below traps. Depth to basement in the western part of basinal low is 2 km increasing more than 15 km in the eastern part near the hinge zone area and east of it