الفهرس 
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Abstract
Three boreholes from the area located east of Nile Delta, Egypt were studied for determining the lithologic and Palynological characters and detecting the boundary between the Upper Jurassic and the Lower Cretaceous sediments. Also, it aims to show the difference in facies, microfloral fossil content to detect the probable paleoecology and paleoclimate
About 160 ditch rock samples from the subsurface Upper Jurassic- Lower Cretaceous successions in the studied wells (Q-72-1X, Sindy-1 and Monaga-1) were investigated megascopically and microscopically for determining their lithologic characteristics. The sample description in addition to the physical characters of the penetrated succession have been compilied from geophysical and well logs data which were taken in consideration. The resulted data were used in the description of the recorded strata and in redrawing the lithostratigraphic successions. The following rock units are distinguished: 5- Dahab Formation (Aptian- Albian)4- Alamein Formation (Aptian) 3- Alam El Beuib Formation (Barremian-Aptian) 2- Massajid Formation (Bathonian - Kimmeridgian) 1- Khalig El Ayoun Formation (Bathonian- Oxfordian).