| | Journal (article/letter/editorial) | Sedimentary Origin of the Mn-Fe Ore of Um Bogma, Southwest Sinai: Geochemical and Paleomagnetic Evidence...Materials Authority, P.O. Box 530, Maadi, Cairo, Egypt E. H. IBRAHIM,† Department of Geology, Faculty...Mansoura, Egypt 35516 AND H. H. ODAH National Institute of Astronomy and Geophysics, Helwan, Egypt Abstract...estimate the origin and age of the Mn-Fe ore of Um Bogma Formation of the early Carboniferous. For this purpose...and host rocks of Um Bogma Formation and the overlying sandstone of Abu Thora Formation. The paleomagnetic |
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