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Department of Geology, Faculty of Science. The University. Minia. Egypt;  Department of Geology, Faculty of Science, The University, Mansoura, Egypt; and Earth Sciences Laboratory, National Research Centre, Dokki, Cairo, Egypt.

ABSTRACT

Limestones from Minia Formation (Middle Eocene) of the Nile Valley have been analysed for major elements, acid-insoluble residue (I.R.) and strontium. The Limestones, composed almost entirely of calcite, are characterised by low contents of magnesia and I.R. The amounts of SiO₂, TiO₂, AL₂O₃ and to some extent Fe₂O₃ are controlled by the contents of I.R. No visible correlation has been obtained between the abundance of major elements and the type of facies. Strontium is relatively abundant in the deep-sea facies compared with the shallow marine facies.