Evidence of Structural Facts Inferred from Aeromagnetic Data Analysis over the Guider-Maroua Area (Northern Cameroon)  

作　　者：Jean Daniel Ngoh Théophile Ndougsa Mbarga Stéphane Patrick Assembe Arsène Meying Olivier Ulrich Owono Tabod Charles Tabod 

机构地区：[1]Postgraduate School of Science, Technology and Geosciences, University of Yaoundé I, Yaoundé, Cameroon [2]Department of Physics, Advanced Teachers’ Training College, University of Yaoundé I, Yaoundé, Cameroon [3]School of Geology and Mining Engineering, University of Ngaoundéré, Meiganga, Cameroon [4]Faculty of Science, University of Bamenda, Bambili, Cameroon

出　　处：《International Journal of Geosciences》2017年第6期781-800,共20页地球科学国际期刊（英文）

摘　　要：In this study, we performed some filters to highlight geological structures and/or features which are found in the igneous rocks, between the latitudes 9°45'N to 10°45'N and longitudes 13°15'E to 14°30'E. The application of the first vertical derivative (FVD) and the horizontal gradient magnitude (HGM) on a total magnetic data over the study area has led to put in evidence: 1) geological features as geological boundaries, faults, dykes, folds on the FVD map;2) abundant aeromagnetic lineaments probably fractures, dykes and contacts, ex-hibit a conjugate relationship suggesting a near NE and NW tectonic trends;3) existence of a possible prominent near E-W compression, characterized by a possible dextral displacement of geological formations by the shear movements;4) and the magnetic signature of the country rocks.In this study, we performed some filters to highlight geological structures and/or features which are found in the igneous rocks, between the latitudes 9°45'N to 10°45'N and longitudes 13°15'E to 14°30'E. The application of the first vertical derivative (FVD) and the horizontal gradient magnitude (HGM) on a total magnetic data over the study area has led to put in evidence: 1) geological features as geological boundaries, faults, dykes, folds on the FVD map;2) abundant aeromagnetic lineaments probably fractures, dykes and contacts, ex-hibit a conjugate relationship suggesting a near NE and NW tectonic trends;3) existence of a possible prominent near E-W compression, characterized by a possible dextral displacement of geological formations by the shear movements;4) and the magnetic signature of the country rocks.

关 键 词：Magnetic GRADIENT Reduction to the EQUATOR First Vertical Derivative Horizontal GRADIENT MAGNITUDE LINEAMENT TECTONIC Trend 

分 类 号：R73[医药卫生—肿瘤]