Abstract: Prerift, Synrift Sedimentation and Hydrocarbon Potential in Krishna - Godavari Basin, India

GUPTA, S. K., G. K. PRASAD*, S. K. MAJUMDAR, VINOD KUMAR, and K. S. BHUSHAN

Krishna-Godavari basin located in the eastern seaboard of Indian Peninsula represents a divergent margin belt.

Prerift sequence in the basin comprises fluvial and deltaic sediments with a maximum thickness of 1800 m. The prerift sequence is confined to northwest-southeast trending graben in part of basin.

Synrift sequence ranging in age from Jurassic to Early Cretaceous has maximum thickness of 1500 m and fills northeast - southwest trending graben related to fragmentation of Gondwanaland. Major tectonic adjustments and resultant changes in depositional styles terminate in a basin scale unconformity. The drift phase characterizes a predominant easterly tilt of the craton resulting in the deposition of an enormous thickness of terrigenous sediments.

Two petroleum systems are identified within the prerift sequence and synrift sequence of the basin.

AAPG Search and Discovery Article #90942©1997 AAPG International Conference and Exhibition, Vienna, Austria