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Ground Magnetic Mapping of Basement Structures of Maar Lake Tizong and Its Surroundings (Mandji/Wakwa, Adamawa, Cameroon).

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Title: Ground Magnetic Mapping of Basement Structures of Maar Lake Tizong and Its Surroundings (Mandji/Wakwa, Adamawa, Cameroon).
Authors: Eya'ama, Ostwald Gaétan Eneme1,2 (AUTHOR) genemson@yahoo.fr, Amougou, Olivier Ulrich Igor Owono3,4 (AUTHOR) oaoulrich@gmail.com, Essi, Jean Marcel Abate5 (AUTHOR), Mbarga, Théophile Ndougsa1,6 (AUTHOR), Meying, Arsène7 (AUTHOR), Gouet, Daniel Hervé8 (AUTHOR), Mishra, Pramita (AUTHOR) pmishra@wiley.com
Source: International Journal of Geophysics. 10/6/2025, Vol. 2025, p1-23. 23p.
Subjects: Geodynamics, Volcanology, Lakes, Igneous intrusions, Structural geology, Geophysical surveys, Magnetic anomalies
Geographic Terms: Cameroon
Abstract: The Ngaoundéré area, marked by a complex geodynamic context, is characterized by ancient and recent tectonic activities, as well as intraplate volcanism linked to the Cameroon volcanic line (CVL). Ground magnetic mapping is an effective geophysical tool for detecting hidden faults or fractures and magnetic intrusions. The aim of this study is to investigate the basement of the maar Lake Tizong area in the Adamawa Plateau. Ground magnetic survey and eological field work have been carried out. Geological field work reveals that volcanic and granitic formations cropping out in the study area, and the main brittle structures trend NW‐SE. Qualitative and quantitative analyses were performed on magnetic data. Qualitative analysis uses a number of operators and mathematical filters, notably reduction to the equator, regional/residual separation, gradients, analytical signal, and tilt angle derivative. This enabled us to describe the anomalies globally, identify magnetic discontinuities and structures assimilated to fractures and faults, and produce a structural map of the magnetic lineaments. A quantitative analysis involves Euler deconvolution, 2D3/4 modeling, and the source parameter index methods and makes it possible to assess the shapes and depths of the anomaly causative sources. As a result, the qualitative analysis identified several lineament directions, chiefly ESE‐WNW, ENE‐WSW, NE‐SW, and NW‐SE assimilated to brittle or ductile deformation. Structures trending NE‐SW and ENE‐WSW correlate with the regional fault of Ngaoundéré and are associated with the regional tectonic of the CVL. It revealed a cluster of solutions with depths greater than 100 m in the Mandjir area. These correspond to new magnetic discontinuities indicating the presence of intrusive bodies in the subsoil. However, NW‐SE and WNW‐ESE are linked to the major volcanic lava of Ngaoundéré and the orientation of Vina River. This work shows the presence of discontinuities favorable for fissural volcanism. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Geophysics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Ground Magnetic Mapping of Basement Structures of Maar Lake Tizong and Its Surroundings (Mandji/Wakwa, Adamawa, Cameroon).
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  Data: <searchLink fieldCode="AR" term="%22Eya'ama%2C+Ostwald+Gaétan+Eneme%22">Eya'ama, Ostwald Gaétan Eneme</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> genemson@yahoo.fr</i><br /><searchLink fieldCode="AR" term="%22Amougou%2C+Olivier+Ulrich+Igor+Owono%22">Amougou, Olivier Ulrich Igor Owono</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<i> oaoulrich@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Essi%2C+Jean+Marcel+Abate%22">Essi, Jean Marcel Abate</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mbarga%2C+Théophile+Ndougsa%22">Mbarga, Théophile Ndougsa</searchLink><relatesTo>1,6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Meying%2C+Arsène%22">Meying, Arsène</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gouet%2C+Daniel+Hervé%22">Gouet, Daniel Hervé</searchLink><relatesTo>8</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mishra%2C+Pramita%22">Mishra, Pramita</searchLink> (AUTHOR)<i> pmishra@wiley.com</i>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Geophysics%22">International Journal of Geophysics</searchLink>. 10/6/2025, Vol. 2025, p1-23. 23p.
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  Data: <searchLink fieldCode="DE" term="%22Geodynamics%22">Geodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Volcanology%22">Volcanology</searchLink><br /><searchLink fieldCode="DE" term="%22Lakes%22">Lakes</searchLink><br /><searchLink fieldCode="DE" term="%22Igneous+intrusions%22">Igneous intrusions</searchLink><br /><searchLink fieldCode="DE" term="%22Structural+geology%22">Structural geology</searchLink><br /><searchLink fieldCode="DE" term="%22Geophysical+surveys%22">Geophysical surveys</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+anomalies%22">Magnetic anomalies</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Cameroon%22">Cameroon</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: The Ngaoundéré area, marked by a complex geodynamic context, is characterized by ancient and recent tectonic activities, as well as intraplate volcanism linked to the Cameroon volcanic line (CVL). Ground magnetic mapping is an effective geophysical tool for detecting hidden faults or fractures and magnetic intrusions. The aim of this study is to investigate the basement of the maar Lake Tizong area in the Adamawa Plateau. Ground magnetic survey and eological field work have been carried out. Geological field work reveals that volcanic and granitic formations cropping out in the study area, and the main brittle structures trend NW‐SE. Qualitative and quantitative analyses were performed on magnetic data. Qualitative analysis uses a number of operators and mathematical filters, notably reduction to the equator, regional/residual separation, gradients, analytical signal, and tilt angle derivative. This enabled us to describe the anomalies globally, identify magnetic discontinuities and structures assimilated to fractures and faults, and produce a structural map of the magnetic lineaments. A quantitative analysis involves Euler deconvolution, 2D3/4 modeling, and the source parameter index methods and makes it possible to assess the shapes and depths of the anomaly causative sources. As a result, the qualitative analysis identified several lineament directions, chiefly ESE‐WNW, ENE‐WSW, NE‐SW, and NW‐SE assimilated to brittle or ductile deformation. Structures trending NE‐SW and ENE‐WSW correlate with the regional fault of Ngaoundéré and are associated with the regional tectonic of the CVL. It revealed a cluster of solutions with depths greater than 100 m in the Mandjir area. These correspond to new magnetic discontinuities indicating the presence of intrusive bodies in the subsoil. However, NW‐SE and WNW‐ESE are linked to the major volcanic lava of Ngaoundéré and the orientation of Vina River. This work shows the presence of discontinuities favorable for fissural volcanism. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Geophysics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1155/ijge/3294109
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 23
        StartPage: 1
    Subjects:
      – SubjectFull: Geodynamics
        Type: general
      – SubjectFull: Volcanology
        Type: general
      – SubjectFull: Lakes
        Type: general
      – SubjectFull: Igneous intrusions
        Type: general
      – SubjectFull: Structural geology
        Type: general
      – SubjectFull: Geophysical surveys
        Type: general
      – SubjectFull: Magnetic anomalies
        Type: general
      – SubjectFull: Cameroon
        Type: general
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      – TitleFull: Ground Magnetic Mapping of Basement Structures of Maar Lake Tizong and Its Surroundings (Mandji/Wakwa, Adamawa, Cameroon).
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            NameFull: Eya'ama, Ostwald Gaétan Eneme
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            NameFull: Amougou, Olivier Ulrich Igor Owono
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            NameFull: Essi, Jean Marcel Abate
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            NameFull: Mbarga, Théophile Ndougsa
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              Text: 10/6/2025
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              Y: 2025
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