Journal of Earth Science & Climatic Change
Open Access

Abstract

Recent field geologic mapping supported by magnetic and radioactive surveys provide a new view on uranium distribution in the Asfar Thwelil area located at the northern Arabian shield. The area mainly consists of rhyolite dome dissected by several faults with different trends. Two groups of uranium veins intrude the dome: (a) the veins rich in fluorite are associated with the main faults which trend N120. This group consists of black uranium oxides representing gummite and uraninite and constitutes by far the most important uranium source, while (b) the second group is associated with the faults that trend N155�, and is represented by uranium oxides such as uraninite and uranophane together with purple fluorite. Therefore it�s possible that Groundwater in the vicinity of the area will be contaminated by radioactive elements, It is recommended to take prompt actions by the environmental organizations in Saudi Arabia to study the area thoroughly reduce the health and environmental hazards of Asfar Thwelil area.

Biography

Saad Mogren completed B.Sc. in Geophysics from King Saud University, Riyadh, and PhD in Geophysics at Newcastle, England on Geophysical investigations on the Najd Fault System, his PhD thesis were focused on processing and interpreting the gravity and magnetic data of the Arabian Shield and Cover Rocks. He is now Chairman of the Geology and Geophysics Department, King Saud University at Riyadh; where he also teaches Gravity magnetic methods. His main scientific interests in 3D modeling of gravity and magnetic data, Geoid calculation based on gravity data and Decorrugation of the aeromagnetic data.