GEOLOGICAL STUDIES OF THE PLIO-PLEISTOCENE PALEOSOL SEDIMENTS OF 6TH OCTOBER CITY, GIZA, EGYPT

Abstract

Eight sections were measured and described from the 6 of October City. These sections are I, II, III, IV, V, VI, VII and VIII. Lithostratigraphic sections I to III belong to the postMiocene (Plio-Pleistocene) paleosols, whereas section V and VI belong to late Pleistocene (most –recent paleosol) and section VIII belong to Miocene clastic. The sequence of the previously diagenetic processes may be accepted because the studied paleosols constitute the upper most parts of the stratigraphic sections. So, they did not subjected to burial compaction and then the cementation played the main role of lithification. Also, the abundance of iron oxides in the studied paleosol samples may be referred to the Oligocene iron rich sediments which supply the solutions with more iron oxides. The studied sediments were transported and deposited mainly by fluviatile processes. These paleosols are resulted from the karstifications processes in which the dissolution of the Eocene, Miocene and Pliocene carbonates during the pluvial period in an oxidizing wet phase environments.