نظم التصريف المائي خلال الزمن الثالث في مصر: دراسة باليوجيومورفولوجية

الملخص EN

Drainage systems are the most important physiographic phenomena that appeared in the Egyptian environment during the tertiary, especially the Oligocene era, where the prevailing climatic and topographical conditions were completely different from what they are now.

the surface discharge reached its clearest picture, with the emergence of a group of river systems that depended on local rains.

but the evidence on the paleo-drainage system is difficult because of the lack of geomorphological evidence that can guide us to accurate results during that period, and many indirect evidence have been relied upon confirming the existence of an paleo-drainage system and knowing the reasons for its fading out.