University of Tehran Press Journal of the Earth and Space Physics 2538-371X 46 4 2021 01 20 Application of Forward and Inverse Modelling to High-Resolution Gravity Data for Mineral Exploration Application of Forward and Inverse Modelling to High-Resolution Gravity Data for Mineral Exploration 117 129 76426 10.22059/jesphys.2020.296560.1007192 FA Gideon O, Layade Senior Lecturer, Department of Physics, College of Physical Sciences, Federal University of Agriculture, Abeokuta, Nigeria 0000-0002-3665-6883 Hazeez O. Edunjobi M.Sc. Student, Department of Physics, College of Physical Sciences, Federal University of Agriculture, Abeokuta, Nigeria 0000-0003-0129-3389 Victor Makinde Professor, Department of Physics, College of Physical Sciences, Federal University of Agriculture, Abeokuta, Nigeria B. Saheed Bada Senior Lecturer, Department of Physics, College of Physical Sciences, Federal University of Agriculture, Abeokuta, Nigeria Journal Article 2020 01 27 Gravity survey is a geophysical tool used to investigate the subsurface by measuring the differences in Earth’s gravitational field. The high-resolution gravity data within latitude 7⁰.00^׀ - 7⁰.30^׀N, and longitude 3⁰.00^׀- 3⁰.30^׀E was acquired through Bureau Gravimetrique Internationale (EGM2008). The research work employed the methods of the filtering techniques as well as forward and inverse modelling for data analysis and interpretations. The qualitative results of the gravity anomaly of the field through the regional-residual separation technique and the high pass filters show the local and geologic features of the study area. The low, fairly high and high-density areas are characterized by alluvial, meta-sediments/sedimentary and igneous deposits respectively. The derivative maps aided the locations, boundaries and edges of anomalous bodies, including the transition zones and sedimentary intrusions of the study area. Forward and inverse modeling techniques were applied to profiles (P1-P4) in a quantitative approach, to describe the geometry, density contrast, depth, position, strike, dip and plunge. The depth range of 1268 m to 3111 m was calculated, while the density contrasts of gravity bodies suggest the presence of mineral rocks such as limestone, quartz, gneiss, sandstone, schist, granite, quartzite and gypsum. Gravity survey is a geophysical tool used to investigate the subsurface by measuring the differences in Earth’s gravitational field. The high-resolution gravity data within latitude 7⁰.00^׀ - 7⁰.30^׀N, and longitude 3⁰.00^׀- 3⁰.30^׀E was acquired through Bureau Gravimetrique Internationale (EGM2008). The research work employed the methods of the filtering techniques as well as forward and inverse modelling for data analysis and interpretations. The qualitative results of the gravity anomaly of the field through the regional-residual separation technique and the high pass filters show the local and geologic features of the study area. The low, fairly high and high-density areas are characterized by alluvial, meta-sediments/sedimentary and igneous deposits respectively. The derivative maps aided the locations, boundaries and edges of anomalous bodies, including the transition zones and sedimentary intrusions of the study area. Forward and inverse modeling techniques were applied to profiles (P1-P4) in a quantitative approach, to describe the geometry, density contrast, depth, position, strike, dip and plunge. The depth range of 1268 m to 3111 m was calculated, while the density contrasts of gravity bodies suggest the presence of mineral rocks such as limestone, quartz, gneiss, sandstone, schist, granite, quartzite and gypsum. https://jesphys.ut.ac.ir/article_76426_902bec435028acc0abd75aa3480eda26.pdf