توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Inferring the Subsurface Basement Depth and Structural Trends of the Northwestern Part of the Western Desert, Egypt, as Deduced from the Potential Field Data
اطلاعات انتشار: World Applied Sciences Journal، سي ام،شماره۷، ۲۰۱۴، سال
تعداد صفحات: ۱۲
The main goal of the present study is an attempt to determine the sedimentary cover and structural trends in the northwestern part of the Western Desert, Egypt, through the integrated analysis and interpretation of the total intensity and Bouguer gravity as the main source of information. The study was initiated by reducing the total magnetic map to the northern magnetic pole map. Different analytical techniques were applied on both the RTP magnetic and gravity data, including; regional– residual separation using power spectrum method, structural trend analysis and depth improvement for the basement surface from gravity and RTP magnetic data. The depths obtained throughout three methods; power spectrum technique, analytical signal tool and two– dimensional modeling of RTP magnetic data. Where, the depths obtained from the first two methods will be used as a control points in the RTP two– dimensional modeling in order to minimize the error and facilitate the iteration of the suggested models. The basement relief map from gravity and magnetic output has been produced. This map indicates that, the basement depth, generally, increases from north and south to central part of the study area. The sedimentary cover is about 2.0 km in the northern and southern parts with increases to more than 5.4 km in the central, eastern and west central part which represents the major basins and changed gradually in the other parts of the study area. Results of structural trend analysis revealed that, the investigated area is greatly affected by several structural trends; E–W, ENE–WSW, NESW and N–S directions. These trends are associated with the Mediterranean Sea, Syrian Arc System and Aqaba System, respectively. Beside, this map has revealed a spatial relationship between the paleotopographic highs and lows in the Precambrian basement and structure and thickness anomalies in the overlying Tertiary sediments.
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