Integrating of Remote Sensing and Airborne Magnetic Data to Outline the Geologic Structural Lineaments That Controlled Mineralization Deposits for the Area around Gabal El-Niteishat, Central Eastern Desert, Egypt
The Gabal (G.) El-Niteishat area lies in the Central Eastern Desert of
Egypt which is known for various mineral resources and geological structures. Umm
Gheig, Umm Naggat, Umm Shaddad, Wadi (W.) Zeidun and Sigdit represent some
important regions that contain mineral deposits in the study area. Various
filters such as first vertical derivative (FVD), horizontal gradient magnitude
(HGM), tilt derivative (TDR) and near-surface were applied to the airborne
magnetic data for the study area to deduce the structural lineaments and
magnetic source edges which were controlled by the presence of mineral deposits. Processed Landsat ETM+ images are used
for delineating the rock unit boundaries that are exposed in the study area
such as serpentinite, metagabbro, metavolcanics and metasediments. Also, band ratios, principal
component analysis (PCA) and false-color composite image (Crosta alteration
image) were applied to get specific results about the alteration zones. The
structural lineaments analysis illustrated that the common trends that affected
the study area were NW-SE, NE-SW, E-W and N-S. Integration of remote sensing and airborne
magnetic data exhibited the relation between mineralization and structural
lineaments.
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