Department of Geology, University of San a, Sana, Yemen and Geological Survey, Abbassia, Cairo, Egypt
ABSTRACT
As a part of coal prospecting programme, some gravimetric and electrical investigations were carried out on Kathib El Makhazin area, located between Ayun Musa and Maghara, in Sinai, Egypt, along two traverses crossing a high gravity anomaly. These studies were proposed to verify the presence of the basement uplift expected to accompany the gravity anomaly, and to clarify peculiarities of the crystalline basement, which could be reflected on the sedimentary cover, and cause the coal-bearing formations to occur at comparatively small depths. Gravimetric stations were spaced every 250 m along the traverses, whereas the electrical measurements, in the form of deep vertical electrical soundings, were conducted along the same traverses, at 3-6 km intervals. The nature of the regional gravity high anomaly was investigated and a basement uplift was ascertained at a depth of about 1500 m. As a result, the coal-bearing horizons were expected to be encountered at a depth of about 700 m.