Evidence of Major Structural Features over the Pan-African Domain in the Bertoua-Mbangue Area (East Cameroon) from a Multiscale Approach of Modeling and Interpretation of Aeromagnetic Data.
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| Title: | Evidence of Major Structural Features over the Pan-African Domain in the Bertoua-Mbangue Area (East Cameroon) from a Multiscale Approach of Modeling and Interpretation of Aeromagnetic Data. |
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| Authors: | Ulrich Igor, Owono Amougou Olivier1, Theophile, Ndougsa Mbarga1,2, Arsène, Meying3, Stephane Patrick, Assembe1,4, Jean Daniel, Ngoh1, Paul Claude, Ngoumou2, Justine, Yandjimain1 |
| Source: | International Journal of Geophysics. 3/3/2019, p1-12. 12p. |
| Subjects: | Multiscale modeling, Geomagnetic maps, Archaeological geology, Orogeny, Granite |
| Abstract: | The aim of this study is to investigate crustal structures from East Cameroon, using aeromagnetic data. The modeling of aeromagnetic data is conducted using the Oasis Montaj 8.0 software. The total magnetic intensity map reduced to the equator (RTE-TMI) shows important anomalies features, namely, the Northern East magnetic anomalies of high amplitude, the Southwest where very low values of the magnetic intensity were observed, and a corridor with negative values relatively high, separating the anomalies. The horizontal gradient map shows on the one hand brittle and folded structures carried out in the area of study and on the other hand various rectilinear, narrow, and short-wave anomalies that can be classified as a family of little faults. The maxima observed on the RTE-TMI maps are correlated to intrabasement contacts; and the map derived from Euler's solutions permitted to evaluate the depth of the geological accidents observed from the other filters. This map also reveals new faults with a depth greater than 5000 m. The lineaments identified in the Southwestern part could be linked to the Pan-African orogeny and seem to correspond to deep-seated basement structures, which are referred to the tectonic boundary between Congo Craton and the Pan-African orogeny belt. A 23/4-D modeling confirmed the observations derived from the RTE-TMI and HGM maps analyses. It shows intrusive bodies composed of gneiss and porphyroid granite and some domes with their roof situated at various depths not exceeding 1800 m from the surface. The structural map of the study area shows the trending of the structural features observed, namely, NE-SW, NW-SE, ENE-WSW, and WNW-ESE, respectively, while the E-W and N-S are secondary orientation of the observed tectonic evidence. Moreover, circular anomalies observed over the area are assimilated to intrusions of high magnetic materials or to granitic domes. [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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| Header | DbId: egs DbLabel: Engineering Source An: 135031784 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Evidence of Major Structural Features over the Pan-African Domain in the Bertoua-Mbangue Area (East Cameroon) from a Multiscale Approach of Modeling and Interpretation of Aeromagnetic Data. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ulrich+Igor%2C+Owono+Amougou+Olivier%22">Ulrich Igor, Owono Amougou Olivier</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Theophile%2C+Ndougsa+Mbarga%22">Theophile, Ndougsa Mbarga</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Arsène%2C+Meying%22">Arsène, Meying</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Stephane+Patrick%2C+Assembe%22">Stephane Patrick, Assembe</searchLink><relatesTo>1,4</relatesTo><br /><searchLink fieldCode="AR" term="%22Jean+Daniel%2C+Ngoh%22">Jean Daniel, Ngoh</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Paul+Claude%2C+Ngoumou%22">Paul Claude, Ngoumou</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Justine%2C+Yandjimain%22">Justine, Yandjimain</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Geophysics%22">International Journal of Geophysics</searchLink>. 3/3/2019, p1-12. 12p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Multiscale+modeling%22">Multiscale modeling</searchLink><br /><searchLink fieldCode="DE" term="%22Geomagnetic+maps%22">Geomagnetic maps</searchLink><br /><searchLink fieldCode="DE" term="%22Archaeological+geology%22">Archaeological geology</searchLink><br /><searchLink fieldCode="DE" term="%22Orogeny%22">Orogeny</searchLink><br /><searchLink fieldCode="DE" term="%22Granite%22">Granite</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The aim of this study is to investigate crustal structures from East Cameroon, using aeromagnetic data. The modeling of aeromagnetic data is conducted using the Oasis Montaj 8.0 software. The total magnetic intensity map reduced to the equator (RTE-TMI) shows important anomalies features, namely, the Northern East magnetic anomalies of high amplitude, the Southwest where very low values of the magnetic intensity were observed, and a corridor with negative values relatively high, separating the anomalies. The horizontal gradient map shows on the one hand brittle and folded structures carried out in the area of study and on the other hand various rectilinear, narrow, and short-wave anomalies that can be classified as a family of little faults. The maxima observed on the RTE-TMI maps are correlated to intrabasement contacts; and the map derived from Euler's solutions permitted to evaluate the depth of the geological accidents observed from the other filters. This map also reveals new faults with a depth greater than 5000 m. The lineaments identified in the Southwestern part could be linked to the Pan-African orogeny and seem to correspond to deep-seated basement structures, which are referred to the tectonic boundary between Congo Craton and the Pan-African orogeny belt. A 23/4-D modeling confirmed the observations derived from the RTE-TMI and HGM maps analyses. It shows intrusive bodies composed of gneiss and porphyroid granite and some domes with their roof situated at various depths not exceeding 1800 m from the surface. The structural map of the study area shows the trending of the structural features observed, namely, NE-SW, NW-SE, ENE-WSW, and WNW-ESE, respectively, while the E-W and N-S are secondary orientation of the observed tectonic evidence. Moreover, circular anomalies observed over the area are assimilated to intrusions of high magnetic materials or to granitic domes. [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: BibEntity: Identifiers: – Type: doi Value: 10.1155/2019/9148678 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 1 Subjects: – SubjectFull: Multiscale modeling Type: general – SubjectFull: Geomagnetic maps Type: general – SubjectFull: Archaeological geology Type: general – SubjectFull: Orogeny Type: general – SubjectFull: Granite Type: general Titles: – TitleFull: Evidence of Major Structural Features over the Pan-African Domain in the Bertoua-Mbangue Area (East Cameroon) from a Multiscale Approach of Modeling and Interpretation of Aeromagnetic Data. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Ulrich Igor, Owono Amougou Olivier – PersonEntity: Name: NameFull: Theophile, Ndougsa Mbarga – PersonEntity: Name: NameFull: Arsène, Meying – PersonEntity: Name: NameFull: Stephane Patrick, Assembe – PersonEntity: Name: NameFull: Jean Daniel, Ngoh – PersonEntity: Name: NameFull: Paul Claude, Ngoumou – PersonEntity: Name: NameFull: Justine, Yandjimain IsPartOfRelationships: – BibEntity: Dates: – D: 03 M: 03 Text: 3/3/2019 Type: published Y: 2019 Identifiers: – Type: issn-print Value: 1687885X Titles: – TitleFull: International Journal of Geophysics Type: main |
| ResultId | 1 |
