الفهرس 
Chapter (I) INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Abu Dabbab-G. Nuweibi area is located in the Central Eastern Desert and covers 1116 km2 and lies between latitudes 25° 10 24 & 25° 25 25N and longitudes 34° 25 22 & 34° 49 16E.The area of study is 20 km from the Red Sea.
The present work deals essentially with the analysis and interpretation of airborne gamma-ray spectrometry and aeromagnetic prospecting to delineate the surface spatial extension of radioactive anomalies zones and structural setting of the study area.
A set of spectrometric image maps are produced to represent the different distributions of the radioactive elements, their ratios and composite images (TC, eU, eTh, K40%, eU/eTh, eU/K40%, eTh/ K40%, radioelements composite image, uranium composite image, thorium composite image and potassium40 composite image). Granitic rocks are recorded the highest values among all radiometic maps.
The F-parameter map shows the high values that are related to granitic rocks as in the case of Abu Dabbab-G.Nuweibi REEs and the contacts of younger granites and metasediments in the SE part of the mapped area (Pb, Zn mineralization) and Quaternary deposits.
Uranium remobilization analysis also reflects that, all rock units have uranium remobilization except Shagra Formation, Hammamat clastics and metagabbro to metadiorite. Three levels of radiation dose rate (<0.2 mSv/y, from 0.2 to 0.3 mSv/y and >0.3 mSv/y). The highest level; with values over than 0.3 mSv/y and is related togranitic rocks and some parts of metasediments. Finally, spectrometric survey points to predominant lineament directions toward NW-SE and NE-SW.
Aeromagnetic data analysis include; Reduced to the North magnetic pole (RTP), power spectrum, residual and regional components, upward continuation, vertical derivative, depth estimation and detect of subsurface structural setting.
The magnetic sources are from 0.5 km to 1.2 km, vertical derivative of the RTP map showed the edges and geologic boundaries in eastern and western parts with trends of NW-SE and NE-SW direction. The deepest sources are located at the southwestern, northeastern & eastern parts. The results of aeromagnetic trend analysis yielded two main trends; the Red Sea-Gulf of Suez trend (NW-SE) and the Gulf of Aqaba trend (NE-SW).
Data integration include; correlation between several lineaments(surface and subsurface; NE-SW & NW-SE trends), the eastern part of the study area is characterized by low radiation level and a suitable domain for developments and also detect promosing locations of Nb-Ta-Sn which are correlated with uraniferous lead locations.