2D Seismic Analysis for unraveling the structural and tectonostratigraphic evolution of the Gippsland basin, southern Australia.

The Gippsland basin is part of the Australian southern margin rift system. It is a world class oil and gas producing province located about 200 km east of the city of Melbourne, and covers about 46 000 km2 onshore and offshore. The offshore part is a post orogenic continental margin basin formed during Jurassic-cretaceous resulting from the breakup of Gondwana supercontinent in the Mesozoic and the separation of Antarctica and Australia. A second rifting phase occurred with a NE-SW associated with the development of the Tasman Sea. Gippsland basin is filled by three major lithostratigraphic groups, namely: the Strzelecki group, Latrobe and Seaspray groups. The sedimentary fill unconformably overlies a Paleozoic basement made up of igneous and folded sedimentary rocks of the Lachlan orogenic. The objective of this study is to help constraining the tectonostratigraphic evolution and the structural evolution model of the basin based on 2D seismic interpretation as reflection seismic data.  The interpretation of seismic reflection data is a fundamental method for determining the geometry and displacement of faults in the subsurface which is primordial in studying structural events in sedimentary basins.