MORPHOTECTONIC INVESTIGATIONS USING LANDSAT 8 AND ASTER GDEM DATA IN THE GEBEL EL-ZEIT AREA, GULF OF SUEZ, EGYPT
From the semi-automatically to fully automatically extracted morphotectonic features, we have found that the tectonic processes have had a major influence on the geomorphology of the Gebel El-Zeit area. The lineaments created by recent and earlier tectonic processes have controlled, to a great extent, the alignment of Wadi Kabrit; the main valley, and the other secondary valley systems of the Gebel El-Zeit area. Major percent of all straight surface lineaments is within a sharply defined orientation of NW-SE, suggesting a strong system of extensional structural fabrics that help creating the Gulf of Suez rift. By comparing the drainage lines of the Gebel El-Zeit watersheds no. 1 and 2 with the locations of major lineaments, it has been found that these drainage lines generally follow the traces of major lineaments. Moreover, directional analysis of drainage line frequencies of these watersheds shows clusters dominated by NW-SE (rift- parallel). This result is consistent with the major trend of the lineaments. This consistence reveals the significance of the NW-SE oriented lineament set, which is related to the main Late Cenozoic extension occurred perpendicular to the Gulf of Suez rift axis, in controlling the geomorphology of the Gebel El-Zeit area.