Petrological Study of Clay deposits of the Lower Cretaceous in Northern of South Palmyra Folding Zone-Syria

The Petrological study of Clay deposits belonging to the lower Cretaceous in the northern part of South Palmyra Folding Zone. Showed they were formed as a result of weathering processes of igneous rocks within Sedimentary continental climate is hot and wet conditions, and formed lateritic iron soil, followed by enrich, erosion and washing caused by watery agitate and re-replaced for short distances within valleys or grooves or local karst cavities, and later filled by crust erosion materials through the Cretaceous Sea transgression.

Petrological and Sedimentary Study of Shiranish Formation of Upper Cretaceous in Sazaba Oil Fields Region in the North East of Syria

Shiranish formation in Sazaba Oil fields region had been divided by Petrology study and well Logs measurements to three major members (lower – middle – upper). Then these members have been divided to lithostratigraphic units and subunits. This study showed that the lower member is formed of clayey - limestone rocks rich in planktonic foraminifera and glaconitic sand. The middle member consists of organic limestone facies, dolomitic-limestone, sometimes clayey - limestone rocks with crystals of pyrite and glaconitic sand. Organic- limestone rocks and detrital limestone are predominant in the upper member interbeded by dolomitic-limestone and rare clayey – limestone. This facies contains pelagic and planktonic foraminifera. The role of diagenes phenomenon is evident on Shiranish’s facies through: dolomitization according to burial and miksing processes. It is also clear through chemical compaction, mechanical compaction, cemenation, micretisation and silisification.