تحريات جيوكهروبائية للسهل الواقع بين طيتي عطشان و شيخ إبراهيم جنوب شرق تلعفر شمال غرب العراق

Abstract EN

Geoelectrical investigations were carried out in the area that located between Atshan and Shaikh Ibrahim anticlines to the northeast and southwest respectively.

The vertical electric sounding was applied by using the collinear and symmetrical Schlumberger array with maximum spacing interval for the current and potential electrodes (840 and 90 m.

respectively).

The sounding Stations were located on sixty four sites through four traverses trending NE-SW.

The field curves were interpreted by the partial matching method and the initial models were adjusted by using KMM program with digital partial matching technique.

Four electric zones were distinguished, the first one represents the surface soil while the second zone reflects the Quaternary deposits, the third zone shows a resistivity changes which reflect the effect of two lithofacies, which belong to the upper member of Al- Fat’ha Formation.

While the forth zone represents a lateral resistivity contrast which reflects lower member of Al-Fat’ha Formation and the unit D of the upper member.

Those lateral variations were explained by the geoelectrical traverses which indicate longitudinal fault.

Moreover; geoelectrical sections delineated type of this normal fault with about 90 m.

throw and 25° dipping.