الفهرس 
Geological settingOnly 14 pages are availabe for public view
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Abstract
The present area comprises about 994 km2 of the Precambrian belt of the north Eastern Desert of Egypt. It is convenient to review briefly the sequence of rock units and their inkt-red tectonic setting. The sequence of the rock units of the area under consideration and their inferred tectonic setting have been const~vcted as shown in table 1 1.1. Table 1 1.1 :Rock sequence and their infsrred tectonic implications. Rock Unit 7- Dykes 6- Younger Granites 5- Barud Young Gabbros 1 4- Hammamat sediments 3- Older Granites I 2- Abu Furad metagabbro complex 1- Abu Marawat El-Rayan Tectonic Settings Eruption of the youngest magma in the fractures of the tensional environment forming dyke suites. Emplacement of a series of post-tectonic younger fresh gabbros and granite plutons in a continental, within-plate post-tectonic setting during the transtensional phase of the orogeny. Deposition of immature to submature sediments in pull-apart basin under a transtensional regme. Syn- to late-tectonic calc-alkaline plutonism representing intrusivesof collisional subductionrelated model Calc-alkaline volcanism of mature island arc settir The studied metavolcanics occupy the major part of the Abu Marawai El-Rayan hdehdiabase-Metadacite Member of Habib (1972). Thess occur as irregular outcrop covering about 1 14 la12 in the southeastern part of the map area. Detailed petrographic studies of the metavoicanics revealed that they conlprise an association of metamorphosed basic to acidic lava flows together with minor pyroclastics. ’The metalava flows mainly comprise metadiabase and mehdacite, together with subor-dinate meta-aiidesite. The xnetapyroclastics include mdesitic and dacitic metatuffs as well as inetatuff breccia. The petrocl~emical study showed that the studied metavolcanics follow the calcalkaline trend and are originated in a mature island arc environment. The metagabbroic rocks are represented in the area under consideration by AhF urad inetagabbro complex. Another small mass of metagabbros crops o~in~ t the southeastern part of the mapped area along Wadi Sczfiga.