الفهرس 
Available Data
StratigraphyOnly 14 pages are availabe for public view
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Abstract
Rosetta fault is a major fault system affecting the offshore West Nile Delta basin. It consists of series of NE-SW and N-S fault segments and had a very complicated history of deformation. It is deep seated fault system that played a great role in the deposition and in the petroleum system of the area either as an element of hydrocarbon charge (migration pathway) and trapping or as element of failure of some traps due to its reactivation (multi-stage deformation). Rosetta fault system began its activity in Mesozoic time and continued till recent times. It shows different deformation styles since the Eocene till now. This study throws light on the deformation history of Rosetta Fault System and its control of the evolution of the west Nile Delta basin and hydrocarbon exploration in the area. Integration of detailed seismic interpretation of ten stratigraphic surfaces starting from Eocene to Pleistocene (Recent) and structural restoration of two seismic sections reveals the complex deformation history of Rosetta fault starting as a reverse fault at deeper stratigraphic levels (Eocene to Tortonian) due to compression then affected by Messinian unconformity. The Messinian section is affected by remarkable NNW-SSE normal faults forming rotated fault blocks due to gravitational movement at that time. Following that Rosetta fault has become an extensional normal fault indicating negative structural inversion since the Eocene time. There are gas escaping features (mud volcanoes and gas chimneys) created through complex deformation history of the study area leading to hydrocarbon trap failure on deep stratigraphic sections.