Identification of depositional features in the Albian and Aptian sections over the hydrocarbon exploration block M2 on the Mannar Basin, Sri Lanka

The Mannar Basin extends over 45,000 km2 off the western coast of Sri Lanka. It has evolved due to multiphase rifting between Indo-Lanka landmasses during Barremian-Paleocene time. sediment thickness basin ranges from about 4 10 km. northern part is a targeted area for hydrocarbon exploration in Though two natural gas discoveries were made 2011, remains frontier lack well penetration and 3D seismic coverage. As result, depositional features are little known. This study focuses on identifying paleo Albian Aptian strata using 650 data Basin. Root Mean Square (RMS) amplitude was used characterize three-time windows IHS Kingdom software (v.8.3). results show existence multi-level submarine fan system strata. They located relatively close coastline compared Eocene deposition this taken place shelf marine environment been influenced by high sea levels low Paleocene Eocene.