الفهرس Only 14 pages are availabe for public view
 |  | from | 169 |  |  |
| | | from | 169 | | |
Abstract
The nuclear minerals are those contain sufficient amounts of basic raw materials absolutely essential for the nuclear energy programs. The present thesis deals with the distribution of these nuclear minerals in G. Hamra environs, Southern Sinai, Egypt. The area under consideration covers about 210 Km2, and delineated by latitudes 28° 45V 35tt and 28° 52^ 20^ N, and longitudes 33°38^ 50^v and 33°46N40VX E.
G. Hamra area is characterized by rugged topography with moderate to high relief and a number of conspicuous positive topographic forms. The studied area is traversed by several Wadies forming parallel to subparallel drainage pattern. Most of these Wadies are straight and trending NW-SE as Wadi El Berra, Sabkhat Iqna-west, Wadi Shaqiq El Agouz and Wadi Labwa. Some Wadies are characterized by wide channel in the upstream and narrow in the downstream as Wadi Steih, and Sabkhat Iqna-east.
Extensive field work together with the study of stereo-pairs aerial photographs revealed the presence of the following lithologic rock units from youngest to oldest:
Stream sediments. youngest
Dykes.
Muscovitc-biotite granite.
Porphyritic rhyodacite.
Hornblencle-biolite granite.
Tonalite-granodiorile complex. oldest
Tonalitc-granocliorite complex in the studied area is corresponding to Grey granites, synorogenic plutonites and older granite. These rocks form moderate to low relief, highly weathered and jointed compared with the adjacent muscovite-biotile granite. They contain enclaves of gabbroic to