NDLI: Using 3-D magnetic modeling to evaluate subsurface structures of the Siwa Oasis, Western Desert, Egypt

Content Provider	Springer Nature Link
Author	Rabeh, Taha
Copyright Year	2012
Abstract	This work was designed to study the subsurface structures in the Siwa Oasis area of the Western Desert in Egypt and to determine their effects on surface geologic structures. A detailed land magnetic survey was performed in traverses covering about 400 km$^{2}$ of the study area. The measured total magnetic field was corrected and reduced to the north magnetic pole. The reduction-to-pole aeromagnetic and Bouguer anomaly maps were used to obtain regional extensions of these subsurface structures, study the continuation of these structures in sedimentary rocks, and delineate the depths to the basement rocks. Data analysis was performed using trend analysis, Euler deconvolution, Werner deconvolution, the Hilbert transform of the analytical signal, and 3-dimensional magnetic modeling methods. The results indicate that the area is affected by tectonic forces in the E-W, N45°–65°E, and N35°–45°W trends, which are correlated with the directions of surface geologic lineaments. The depth to the basement rocks increases from 3.2 km in the southern part to about 3.6 km in the northern part of the area. The results are in good agreement with depths obtained from drill hole data in the area.
Starting Page	279
Ending Page	289
Page Count	11
File Format	PDF
ISSN	16747313
Journal	Science in China Series D: Earth Sciences
Volume Number	55
Issue Number	2
e-ISSN	18691897
Language	English
Publisher	SP Science China Press
Publisher Date	2012-01-26
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	land magnetic survey aeromagnetic data gravity data fault and dyke parameters Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences

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