TY - GEN AU - Sami Kotb Ibrahim Aita AU - Ali Abd El Latif Mesaed , AU - Ibrahim Ebrahim ElAassy , AU - Mortada Mourad ElAref , TI - Geology and radioactivityof the phosphate bearing rocks northeastern sinai egypt / PY - 2005/// CY - Cairo : PB - Sami Kotb Ibrahim Aita , KW - Depositional environments KW - Diageneses KW - phosphite KW - phosphogenesis KW - Radioactivity N1 - Thesis (PH.D.) - Cairo University - Faculty Of Science - Department Of Geology; Issued also as CD N2 - The present thesis aims to throw light on the stratigraphy , sedimentology , mineralogy , geochemistry and radioactivity of the phosphorite bearing intervals within the Upper Cretaceous successions in the northeastern SinaiTo achieve these goals , detailed studies were carried out on the phosphorite bearing units of Themed and Sudr formationsThe phosphatic fossiliferous limestone unit of the upper most part of Themed Formation deposited in restricted shallow subtidal to intertidal marine environment ER -