3D SEISMIC STUDY OF A DETACHMENT PLIOCENE/PLEISTOCENE FAULT SYSTEM IN THE EAST NILE DELTA, EGYPT

Document Type : Original Article

Authors

1 British Petroleum Company, BP Egypt

2 Geology Department, Faculty of Science, Ain Shams University, Cairo, Egypt

3 British Petroleum Company, BP Egypt.

Abstract

Rollover anticlines are syn-sedimentary extensional structures that are commonly associated with salt tectonics. They are considered to result from layer bending of hanging wall sides syn-kinematically while displacing sediments with a rapid sedimentary progradation above growth faults. They are commonly listric in cross section and concave to the basin in a plan-view.
The Mediterranean was isolated from the Atlantic Ocean during the Messinian time depositing thick layers of evaporites. These Messinian evaporites played an important role in the Pliocene and Pleistocene structures in the eastern Mediterranean basin. Structured growth faults, which detach at the Messinian level, form a complex structural setting.
In this study three-dimensional seismic data sets were interpreted to describe the structures associated with a rollover anticline. Frequency decomposition and color blending techniques were used to reveal the structures and their complexity in a better way. The anticline formed in the hanging wall blocks of growth faults is a broad rollover, which extends in a NW-SE direction. Interpreted seismic levels cover the stratigraphic section extending from the Oligocene to present-day seabed.

Files

Share

How to cite

Statistics