HR: 1330h
AN: T53A-08    [Abstracts]
TI: Seismic Stratigraphy Study in the Southern Sudanese Red Sea (Tokar Delta)
AU: * Yagoub, A M
EM: abbasyagoub@yahoo.com
AF: School of Resources and Information, Petroleum University of China, Petroleum University of China, Bjing Changping, BJ 102249 China
AU: Tao, G
EM: taoguo@vip.sina.com
AF: School of Resources and Information, Petroleum University of China, Petroleum University of China, Bjing Changping, BJ 102249 China
AB: The Red Sea is a rift or graben, which separates the Arabian and African plates. It extends from the Gulf of Aden in the south (lat 12° 40' N) to the Gulf of Suez and Aqaba in the north (lat 27° 50' N). The study area comprises about 2500sq.Kms. From the seismic data acquired by the Oil Companies (Chevron 1975-76 Total 1980 and IPC 1992), thirty-two seismic lines were selected to study he stratigraphy and sedimentation of the area. Synthetic seismograms of Suakin-1, Bashayer-1A and Bashayer-2A wells are also used to assistant the data interpretation. We have found that the stratigraphy and sedimentation of the Sudanese Red Sea can be placed into four major tectonic phases, namely, Pre-rifting stratigraphy, Syn-Rift Pre-Salt Stratigarphy, Salt Phase and Syn-Rift Post Salt Stratigraphy. According to our seismic stratigraphy interpretation, the lower most sequence (Mukawar, Hamamit and Mughersum group) overlying the basement complex is relatively uniform throughout the area. The evaporate sequence deposited during the cycle of sea level rise and fall, indicating a change in climate and prolonged period of desiccation. This sequence is composed of Belayim and Dungunab Formation. The Dungunab Formation is a lactic glide surface. The third sequence contains three system tracts. The lowermost is a low stand and the middle is a transgressive, while the upper is a high stand system tract. This sequence is known as the Zeit Formation. The uppermost sequence is a thick sedimentary unit, which is composed mainly of a mixture of clastic and carbonates of Abu Shagara Group. The region witness extensive studies concerning the behavior of the tectonism and the evolution of the Red Sea and its adjoining. Tokar Delta is a part of a NW-SE trending fault-controlled sedimentary basin.
DE: 0900 EXPLORATION GEOPHYSICS
DE: 0935 Seismic methods (3025)
DE: 3025 Marine seismics (0935)
SC: Tectonophysics [T]
MN: 2005 Joint Assembly