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فیزیک زمین و فضا، جلد ۴۶، شماره ۴، صفحات ۱۵۹-۱۷۱
عنوان فارسی Ground Based Gravimetric for the Detection and Depth Mapping of Subsurface Geological Features of Ilesha, Southwest Nigeria
چکیده فارسی مقاله This paper presents the analysis and interpretation of ground gravity data of Ilesha and its environs in southwest Nigeria. The work is aimed at complementing researches done in this locality with magnetic survey for both ground and airborne data. The ground gravity data of the area within latitude (7o30ˈ - 8o00ˈ) N and longitude (4o30ˈ - 5o00ˈ) E was acquired from the Nigerian Geological Survey Agency (NGSA). The data set was interpreted qualitatively and quantitatively to derive information about the structural features of the subsurface. The qualitative analysis was carried out by filtering techniques and interpreted by making visual inspection of grids to map low and high-density regions. Equally, the quantitative interpretation employed were Euler 3-D deconvolution and Source Parameter Imaging (SPI) methods, which revealed the boundary, location and depth of gravity sources defining the study area. The minimum and maximum depths of anomalous sources obtained are 781.43 m and 4,208.85 m, while the average depth to the target is 2,537.215 m. The average depth of gravity anomalous sources estimated predicted the area to hold a worthy prospect for the accumulation of near surface rock minerals.
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عنوان انگلیسی Ground Based Gravimetric for the Detection and Depth Mapping of Subsurface Geological Features of Ilesha, Southwest Nigeria
چکیده انگلیسی مقاله This paper presents the analysis and interpretation of ground gravity data of Ilesha and its environs in southwest Nigeria. The work is aimed at complementing researches done in this locality with magnetic survey for both ground and airborne data. The ground gravity data of the area within latitude (7o30ˈ - 8o00ˈ) N and longitude (4o30ˈ - 5o00ˈ) E was acquired from the Nigerian Geological Survey Agency (NGSA). The data set was interpreted qualitatively and quantitatively to derive information about the structural features of the subsurface. The qualitative analysis was carried out by filtering techniques and interpreted by making visual inspection of grids to map low and high-density regions. Equally, the quantitative interpretation employed were Euler 3-D deconvolution and Source Parameter Imaging (SPI) methods, which revealed the boundary, location and depth of gravity sources defining the study area. The minimum and maximum depths of anomalous sources obtained are 781.43 m and 4,208.85 m, while the average depth to the target is 2,537.215 m. The average depth of gravity anomalous sources estimated predicted the area to hold a worthy prospect for the accumulation of near surface rock minerals.
کلیدواژه‌های انگلیسی مقاله Density,Filtering,Gravity,qualitative,quantitative
نویسندگان مقاله Gideon O. Layade |
Senior Lecturer, Department of Physics, Federal University of Agriculture, Abeokuta, Nigeria

Hazeez O. Edunjobi |
M.Sc. Student, Department of Physics, Federal University of Agriculture, Abeokuta, Nigeria

Kehinde D. Ajayi |
Assistant Lecturer, Department of Physics, Federal University of Agriculture, Abeokuta, Nigeria

D. P. Olujimi |
Undergraduate, Department of Physics, Federal University of Agriculture, Abeokuta, Nigeria

نشانی اینترنتی https://jesphys.ut.ac.ir/article_77997_9f22c27ca779cb319a59c7d7fb7abf4b.pdf
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