|Author(s): Kamal Abou Elmagd, Mohamed W. Ali-Bik, Ashraf Emam|
|Pages: 1-15||Paper ID:157801-6565-IJCEE-IJENS||Published: February, 2015|
Abstract:The Kurkur-Dungul area at South Western Desert of Egypt is an unique hyper-arid region, in which one of the oldest civilizations appeared. The sedimentary record of the area is represented by Cretaceous Nubia Sandstone, Paleocene, Eocene and Quaternary deposits. The sedimentary sequences of the area are the end products of characteristic geomorphic processes developed in response to equilibrated constructive and destructive mechanisms. The area encompasses an outstanding variety of landforms of third order extent including River Nile, Nubian Plain, oases, playas, isolated crystalline hills and Sinn El-Kaddab limestone plateau. Beside these geomorphic features, there is also a number of small-scale characteristic landforms including terraces, terrestrial carbonates including travertine, conglomerate and scattered sheets of gravel, flint and sand as well as, deep-seated, strike-slip faults and accompanied folds. All of these landforms were developed mainly in response to tectono-magmatic and seismic activities, sea level fluctuation and climatic changes. The main natural agents of changes include the interaction of Tethys Sea, rain falls, tectonics, weathering, erosion and wind action. Damming of the Nile and the subsequent accelerated seismic effects as well as sand dune encroachment turned the area to be one of the most dynamic regions in the Arabian-Nubian Shield. Its landforms are susceptible to substantial changes in very short periods of time. In conjunction with the field observations, remote sensing and GIS techniques were applied using digital elevation model (DEM) and multispectral data to produce a digitized visual form of geomorphologic features of the area including drainage network, basins, slope configuration and structures.
|Keywords: climatic changes - drainage network – escarpment – landforms - remote sensing.|
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