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The Precambrian rocks represent 10% of the total exposed rocks in Egypt. The Precambrian rocks exposed in Eastern Desert in Egypt are composed of vast varieties of PanAfrican basement rock types including metasediments, metavolcanics, gabbros, volcanics and different types of granitoid bodies. The Precambrian basement rocks are one of the economically important type of rocks; that many metallic & non metallic ores are mined from them; also these crystalline rocks could be used as source of ornamental stones; Therefore Precambrian fractured crystalline rocks play an important roles as groundwater reservoirs; Moreover, The Precambrian basement rocks had a special importance to be a reservoirs for oil production. The Oil basement was discovered in Egypt since, (1981).The book explained geological setting of Wadi ElAtrash and Wadi ElGhuzah area; Moreover, Petrology and Petrography of Serpentinites, Metavolcanics ,Dokhan Volcanics, older and younger granites,Hammamt sediments and Dykes; Moreover, Petrogenesis and geochemistry of Metavolcanics,Dokhan Volcanics, older and younger granite rocks including(Classifications, Magma type and Tectonic setting)and Evolution stages.
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