الفهرس 
Sedimentology, diagenesis and depth of burial of paleozoic sequences, gulf of Suez province, Egypt
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Abstract
The present study mainly deals with the sedimentology and diagenetic features as well as the depth of burial of the Paleozoic sandstones, surface and subsurface analogues, Gulf of Suez Province, Egypt. The study includes petrographical description of thirty samples from surface and subsurface sections covering the Paleozoic sandstones of the Araba, Naqus and Abu El-Darag formations in the Gulf of Suez area (W.Abu El Darag, St. Paul, W. Dara, surface sections and Sidki Oil Field subsurface section). The samples were described and analyzed in terms of mineralogy, textures, diagenesis and porosity estimation. The characteristics of the petrographical study (diagenetic features, textures, porosity) were applied in mathematical equations and charts proposed by Atwater and Miller (1965), McCulloh (1967), Lanpinskaya and preshpyakova (1971), Selley (1978) and Robinson and Gluyas (1992) to calculate the burial depth of the studied formations. The present work revealed that the studied sandstones are quartzarenite and are mainly composed of quartz (>95%), clay minerals, altered feldspars and heavy minerals showing coarse to fine-grained, rounded to sub-angular grains with low sphericity and well to poor sorting with optical porosity average ranges from 12.21% to 23% and minus cement porosity (MCP) average ranges from 22.21% to 33.5%. By the application of the previously mentioned parameters in mathematical equations and charts for burial depth calculations, it is concluded that the average calculated depth of burial for all applied equations in these locations are 1815m for W.Abu El-Darag, 2455m for St. Paul, 2092m for W.Dara, and 2920m for the Sidki Oil Field. It can be concluded that the rate of subsidence at the western side of the Gulf of Suez is variable from north to south. It is found that the central and southern sub-basins (dip provinces) are of slow subsidence rates whereas the northern dip province (Darag basin) is of a rapid rate of subsidence