University of Khartoum

Gravity and Vertical Sounding Investigations in the Area of Khartoum State East of the Nile

Gravity and Vertical Sounding Investigations in the Area of Khartoum State East of the Nile

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Title: Gravity and Vertical Sounding Investigations in the Area of Khartoum State East of the Nile
Author: Mona Gaboush, El Dawi
Abstract: A regional gravity survey and vertical electrical sounding were carried out in the area east of the Nile between latitude 15° 25'N and 16° 05'N, longitude 32° 30' E and 33° 10'. The purpose of the present study is to investigate the subsurface geology of the area. The quantitative interpretation of the resulting Bouguer anomalies is performed by using borehole data. This is done along several profiles obtained from the Bouguer anomaly map using a computation gravity program G-.model c version 2.2 No. 175. The interpretation reveals two basinal features filling depressions of the Basement Complex named here as Abu Harira Basin and Kabbashi Basin with depths of 950 m and 800 m respectively. They are structurally related to Khartoum Basin The vertical electrical sounding method (VES) is directed to investigate the types and thicknesses of sedimentary units at the western put of the area. Several local. depressions are revealed as an outcome of the VES method. Their maximum depth to the Basement surface is about 160 m. The interpreted depth to the Basement Complex is used as base information to integrate with the result of the gravity interpretation. Thus a compiled geological/structural map of the area east of the Nile is produced. The basinal features in the study area is considered as part of the central Sudan (Khartoum Basin) which had been subjected to several tectonic events which resulted in the formation of several facture systems associated with block subsidence and formation of these basins. The quality of the work could be more refined if other geophysical techniques such as seismic sections and density measurements of rock samples were used to support the above mentioned geophysical methods
URI: http://khartoumspace.uofk.edu/handle/123456789/13986
Date: 2015-06-22


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