Abstract

This study shows the relationship between overpressure and sedimentation rate. The Post Eocene time thickness map suggests very high sedimentation rate as the main cause of disequilibrium compaction within the N-S oriented depositional low. High pressure tops are marked and contoured in line with the contour pattern of this thickness map to demarcate the overpressure zone. Overpressures are not reported on the western side of Eocene shelf break but present towards east all along Bengal-NEC-Mahanadi basins. The narrow zone all along Eocene shelf break (both on the shelf and beyond till overpressure boundary) may be considered for future exploration in Mahanadi and Bengal Basins.